BoP Lab / Road America

T1 at Road America

No mapRunoffs 2020

This track has been raced on 2 configurations (Scoring Sidebar Race, 4.05 mi; 4.01 mi). Laps on different configurations are not comparable, so only events on the 4.05 mile layout are shown; switch above to see the others.

Sectors are not comparable across all of these events. Sector times and the theoretical lap use Runoffs 2025 only. Runoffs 2020 (different number of sectors), Runoffs 2024 (different number of sectors) count towards whole-lap times and trap speed only.

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3	S4
1	Ford Mustang (2014)	Andrew Aquilante	T1	33	2:16.131 E-R		2:16.578 E-Q1	2:16.131 E-R	2:17.203 E-R	+1.371 E-R	157.9 E-Q1
2	Mercedes Benz AMG GT4 (2019)	Tony Ave	T1	44	2:17.292 E-R		2:18.722 E-Q2	2:17.292 E-R	2:17.573 E-R	+1.074 E-R	152.9 E-Q2
3	Chevrolet Corvette (2005)	James Candelaria	T1	34, 134	2:17.924 E-R	2:17.924	2:18.142 E-Q2	2:17.924 E-R	2:18.548 E-R	+0.865 E-R	158.8 G-Q2	39.115 C-R	54.694 C-Q1	27.571 C-R	18.450 C-Q2
4	Mercedes Benz AMG GT4 (2018)	Mark Boden 2+ cars	T1	46	2:18.378 E-R		2:19.052 E-Q1	2:18.378 E-R	2:18.734 E-R	+0.603 E-R	152.9 E-Q2
5	BMW E92 M3	Mark Boden 2+ cars	T1	46	2:18.495 G-Q3		2:18.495 G-Q3	2:18.701 G-R	2:20.138 G-R	+1.787 G-R	157.8 G-Q2
6	BMW E46 M3 (2003)	Hugh Stewart	T1	23	2:20.137 E-R	2:20.137	2:20.794 C-Q2	2:20.137 E-R	2:21.618 E-R	+1.891 E-R	151.5 E-Q2	39.907 C-R	54.636 C-Q2	27.339 C-Q2	18.816 C-Q2
7	Dodge Viper ACR-X	Tim Myers	T1	22	2:20.749 G-Q2		2:20.749 G-Q2	2:26.734 G-R			156.3 G-Q2, G-Q3
8	BMW E92 M3	Thomas Herb	T1	144	2:21.158 G-Q3		2:21.158 G-Q3	2:21.407 G-R	2:21.682 G-R	+1.124 G-R	154.6 G-Q3
9	BMW M4 (2023)	Drew Delmonico	T1	43	2:21.612 C-R	2:20.775	2:21.841 C-Q2	2:21.612 C-R	2:22.635 C-R	+0.968 C-R	163.6 C-R	39.763 C-R	54.733 C-R	27.536 C-R	18.743 C-R
10	Chevrolet Camaro Z28	Bill Baten	T1	39	2:21.697 G-Q3		2:21.697 G-Q3	2:22.650 G-R	2:23.652 G-R	+1.682 G-R	153.4 G-Q2, G-R
11	Chevrolet Corvette (2006)	Michael Pettiford	T1	41	2:22.201 G-Q3	2:22.201	2:22.201 G-Q3	2:24.095 G-R	2:24.737 G-R	+1.644 G-R	156.1 C-Q2	40.148 C-Q1	56.831 C-Q2	28.175 C-Q2	18.881 C-Q2
12	Ford Mustang GT (2012)	David Marshall	T1	02	2:22.818 E-R		2:23.339 E-Q2	2:22.818 E-R	2:23.264 E-R	+1.266 E-R	153.2 E-Q2
13	Ford Mustang FP350S (2017)	Paolo Salvatore	T1	42	2:22.976 E-Q2		2:22.976 E-Q2	2:24.719 G-R	2:25.058 G-R	+0.797 G-R	152.6 E-Q2
14	Ford Mustang	Timothy Rubright	T1	7	2:23.813 G-R		2:24.074 G-Q3	2:23.813 G-R	2:24.541 G-R	+1.212 G-R	151.1 G-R
15	Chevrolet Camaro	Clark Nunes	T1	79	2:24.027 G-Q1		2:24.027 G-Q1				145.7 G-Q2
16	Chevrolet Corvette	Joe Aquilante	T1	32	2:24.603 G-R		2:25.538 G-Q2	2:24.603 G-R	2:24.986 G-R	+1.874 G-R	156.0 G-R
17	Ford Mustang (2013)	Ronald Lombardo	T1	06	2:25.314 E-R	2:25.314	2:26.602 C-Q2	2:25.314 E-R	2:26.284 E-R	+1.388 E-R	145.6 C-P1	40.935 C-Q1	56.418 C-P3	28.889 C-P1	19.304 C-P2
18	BMW E46 M3	Christina Lam	T1	12	2:25.962 G-R		2:26.547 G-Q3	2:25.962 G-R	2:26.135 G-R	+0.422 G-R	144.7 G-R
19	Porsche 997	Joe Boden	T1	45	2:27.809 G-R		2:27.890 G-Q2	2:27.809 G-R	2:28.266 G-R	+0.964 G-R	147.6 G-Q2
20	Ford Mustang FP350S	Don Van Nortwick	T1	8	2:29.212 G-Q3		2:29.212 G-Q3	2:30.426 G-R	2:31.283 G-R	+1.723 G-R	151.7 G-Q2

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

S1 SF → I4AT 1.28 mi
S2 I4AT → I11 1.39 mi
S3 I11 → I13AB 0.83 mi
S4 I13AB → SF 0.02 mi
SF Spd SF → SFT 0.02 mi
Spd I4AT → I4A 0.02 mi

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3	S4
Ford Mustang	T1	6	2:16.131Andrew Aquilante	2:16.578Andrew Aquilante	2:16.131Andrew Aquilante	157.9Andrew Aquilante	40.935Ronald Lombardo	56.418Ronald Lombardo	28.889Ronald Lombardo	19.304Ronald Lombardo
Ford Mustang (2014)	T1	1	2:16.131Andrew Aquilante	2:16.578Andrew Aquilante	2:16.131Andrew Aquilante	157.9Andrew Aquilante
Ford Mustang GT (2012)	T1	1	2:22.818David Marshall	2:23.339David Marshall	2:22.818David Marshall	153.2David Marshall
Ford Mustang FP350S (2017)	T1	1	2:22.976Paolo Salvatore	2:22.976Paolo Salvatore	2:24.719Paolo Salvatore	152.6Paolo Salvatore
Ford Mustang	T1	1	2:23.813Timothy Rubright	2:24.074Timothy Rubright	2:23.813Timothy Rubright	151.1Timothy Rubright
Ford Mustang (2013)	T1	1	2:25.314Ronald Lombardo	2:26.602Ronald Lombardo	2:25.314Ronald Lombardo	145.6Ronald Lombardo	40.935Ronald Lombardo	56.418Ronald Lombardo	28.889Ronald Lombardo	19.304Ronald Lombardo
Ford Mustang FP350S	T1	1	2:29.212Don Van Nortwick	2:29.212Don Van Nortwick	2:30.426Don Van Nortwick	151.7Don Van Nortwick
Mercedes Benz AMG GT4	T1	2	2:17.292Tony Ave	2:18.722Tony Ave	2:17.292Tony Ave	152.9Tony Ave
Mercedes Benz AMG GT4 (2019)	T1	1	2:17.292Tony Ave	2:18.722Tony Ave	2:17.292Tony Ave	152.9Tony Ave
Mercedes Benz AMG GT4 (2018)	T1	1	2:18.378Mark Boden	2:19.052Mark Boden	2:18.378Mark Boden	152.9Mark Boden
Chevrolet Corvette	T1	3	2:17.924James Candelaria	2:18.142James Candelaria	2:17.924James Candelaria	158.8James Candelaria	39.115James Candelaria	54.694James Candelaria	27.571James Candelaria	18.450James Candelaria
Chevrolet Corvette (2005)	T1	1	2:17.924James Candelaria	2:18.142James Candelaria	2:17.924James Candelaria	158.8James Candelaria	39.115James Candelaria	54.694James Candelaria	27.571James Candelaria	18.450James Candelaria
Chevrolet Corvette (2006)	T1	1	2:22.201Michael Pettiford	2:22.201Michael Pettiford	2:24.095Michael Pettiford	156.1Michael Pettiford	40.148Michael Pettiford	56.831Michael Pettiford	28.175Michael Pettiford	18.881Michael Pettiford
Chevrolet Corvette	T1	1	2:24.603Joe Aquilante	2:25.538Joe Aquilante	2:24.603Joe Aquilante	156.0Joe Aquilante
BMW E92 M3	T1	2	2:18.495Mark Boden	2:18.495Mark Boden	2:18.701Mark Boden	157.8Mark Boden
BMW E46 M3	T1	2	2:20.137Hugh Stewart	2:20.794Hugh Stewart	2:20.137Hugh Stewart	151.5Hugh Stewart	39.907Hugh Stewart	54.636Hugh Stewart	27.339Hugh Stewart	18.816Hugh Stewart
BMW E46 M3 (2003)	T1	1	2:20.137Hugh Stewart	2:20.794Hugh Stewart	2:20.137Hugh Stewart	151.5Hugh Stewart	39.907Hugh Stewart	54.636Hugh Stewart	27.339Hugh Stewart	18.816Hugh Stewart
BMW E46 M3	T1	1	2:25.962Christina Lam	2:26.547Christina Lam	2:25.962Christina Lam	144.7Christina Lam
Dodge Viper ACR-X	T1	1	2:20.749Tim Myers	2:20.749Tim Myers	2:26.734Tim Myers	156.3Tim Myers
BMW M4	T1	1	2:21.612Drew Delmonico	2:21.841Drew Delmonico	2:21.612Drew Delmonico	163.6Drew Delmonico	39.763Drew Delmonico	54.733Drew Delmonico	27.536Drew Delmonico	18.743Drew Delmonico
Chevrolet Camaro Z28	T1	2	2:21.697Bill Baten	2:21.697Bill Baten	2:22.650Bill Baten	153.4Bill Baten
Chevrolet Camaro Z28	T1	1	2:21.697Bill Baten	2:21.697Bill Baten	2:22.650Bill Baten	153.4Bill Baten
Chevrolet Camaro	T1	1	2:24.027Clark Nunes	2:24.027Clark Nunes		145.7Clark Nunes
Porsche 997	T1	1	2:27.809Joe Boden	2:27.890Joe Boden	2:27.809Joe Boden	147.6Joe Boden

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Runoffs 2020 → Runoffs 2024 2020-10-02 to 2024-10-01

2020-12-01 T1 Changes to Corvette C8

#29898 from Club Racing Board · Rule change · TB 20-12 (2020-12 Fastrack)

fasterT1 Corvette C8 Z51 gets wider wheels and tyres, weight drops 100 lbs to 3550.

In T1, Chevrolet Corvette C8, Z51 2020-, change as follows:
Max Wheel Size: "19 x 10 11(f) 20 x 11 13(r)"
Tire Size: "~~275~~ 315 (f) ~~315~~ 335 (r)"
Weight: "~~3650~~ 3550"

2021-01-01 T1 Correct T1 Limited Prep Years

#29708 from Joe Aquilante · Rule change · TB 21-01 (2021-01 Fastrack)

neutralT1 Chevrolet Corvette Z06 years extended from 06-12 to 06-13.

In T1-LP Spec Lines, Chevrolet Corvette Z06 (06-12), change years as follows:
"(06-12 13)"

2021-02-01 T1 Request to Clarify Miller Mustang Classification

#28728 from David Mead · Rule change · TB 21-02 (2021-02 Fastrack)

unclearT1 Ford Mustang Challenge 3-valve maximum displacement changes to 4600/5000.

In T1 Spec Lines, Ford Mustang Challenge, change Maximum Displ. as follows:
"4600/5000 3-valve"

Applies to Ford Mustang on this page: Andrew Aquilante, David Marshall, Paolo Salvatore, Timothy Rubright, Ronald Lombardo, Don Van Nortwick

2021-02-01 T1 BMW E46 Carbon Dash

#29806 from Murat Ketenci · Rule change · TB 21-02 (2021-02 Fastrack)

slowerT1 BMW E46 now allows carbon or fiberglass OEM-style dashboards with 25 pound penalty.

In T1, GCR Section 9.1.9.1.C.5., change as follows:
"~~Stock dash/instrument panel cover (dash pad) must be used.~~ Original instruments/gauges may be replaced, or supplemented,
with additional engine monitoring gauges. Accessories, lights and switches may be added or removed. Box-type extensions from
the dash pad may be used to mount switches and controls, in the areas where the OEM insert panels were mounted, so that
they more easily accessible to the driver. Audio and video systems may be removed. Alternative (i.e. carbon or fiberglass) OEM
style and Configuration dashboards may be used with a 25 pound penalty."

2021-02-01 T1 Request to Update T1 Mustang Spec Line

#30001 from DAVID WOODLE · Rule change · TB 21-02 (2021-02 Fastrack)

neutralT1 Ford Mustang/Thunderbird limited to Shelby/Shelby GT350/GT500 models through 2018.

In T1 Spec Lines, Ford Mustang/ Thunderbird, change as follows:
"Ford Mustang~~/ Thunderbird~~
Shelby/Shelby GT350/GT500 (-2018)"

Applies to Ford Mustang on this page: Andrew Aquilante, David Marshall, Paolo Salvatore, Timothy Rubright, Ronald Lombardo, Don Van Nortwick

2021-02-01 T1 Dodge Viper 8400 OEM???

#30174 from Scotty White · Rule change · TB 21-02 (2021-02 Fastrack)

neutralDodge Viper ACR classified in T1 with 8400cc displacement, 3600 lbs minimum weight, 55mm restrictor.

In T1, classify Dodge Viper ACR, as follows:
T1 Maximum
Displ.
Min.
Weight
Required
Restrictor Engine Notes Chassis Notes
Dodge Viper ACR 8400 OEM 3600 (2) 55mm flat

A specification table follows in the original; it is not shown here.

2021-02-01 T1 Class BMW M2CS Club Sport

#30195 from Touring Committee · Rule change · TB 21-02 (2021-02 Fastrack)

neutralBMW M2CS Club Sport classified in T1-LP Spec Lines effective 2021-02-01.

In T1-LP Spec Lines, classify BMW M2CS Club Sport Racing, as follows:

2021-02-01 T1 997.1 GT3 Cup

#30229 from Touring Committee · Rule change · TB 21-02 (2021-02 Fastrack)

neutralPorsche 997.1 GT3 Cup (2006-2011) classified in T1 at 3600cc, 3150 lbs minimum weight.

In T1, classify the Porsche 997.1 GT3 Cup (2006-2011) as follows:
T1 Maximum
Displ.
Min.
Weight
Required
Restrictor Engine Notes Chassis Notes
Porsche 997.1 GT3 Cup (2006-

Show 11 more lines

2011)
3600cc 3150 ABS allowed with 100lb penalty.
Cars must be prepared in
accordance with the appropriate
model/year Porsche factory 911
GT3 Cup parts catalog/service
manual. Cars may not be altered in
any way except as authorized
below. Drivers must have the
correct year manuals as they apply
to their specific car in their

A specification table follows in the original; it is not shown here.

2021-03-01 T1 T1 LP Aero adjustments

#30196 from Touring Committee · Rule change · TB 21-03 (2021-03 Fastrack)

unclearT1 LP removes 50 lbs weight allowance for stock headers, adds aero device allowance up to 100 lbs, permits headers.

In GCR Section 9.1.9.1., Limited T1, change as follows:
"See Limited Preparation (LP) T1 specification lines for the list of cars permitted to run in T1 in a limited preparation level
configuration. These cars shall be prepared to the T2 level of preparation found in 9.1.9.2. with the following additional
allowances:~~Aftermarket headers allowed. Limited prep cars running stock OEM manifold/headers as delivered may subtract~~
~~50lbs. from the specified weight.~~
In addition to T2 specifications all T1-LP cars are permitted to:
1. Relocate the battery
2. Use any commercially available battery.

Show 19 more lines

3. Replace any suspension bushing with spherical joints.
4. Use any spring and/or sway bar rate, configuration must remain OE. Ferrous springs and sway bars only.
5. Hoods, trunk lids, and front fenders may be replaced with panels of any type material, provided that the panel maintains the
OEM profiles.
6. Aftermarket headers allowed.
7. Weight and Aerodynamic Devices
a. Any limited prep car not using a wing and/or splitter may subtract 100lb.
b. Aerodynamic devices conforming to 9.1.9.1.B.1 and 9.1.9.1.B.2 are permitted.
8. All vehicles must use a stock, OEM equivalent, safety glass, or 6 mm minimum thickness Lexan replacement, mounted in the
stock location, at the stock angle and maintaining the stock profile.
9. Engine durability allowances-
a) Rods and pistons may be replaced with aftermarket alternatives provided; 1)that the weight of the replacement is equal to or
greater than OE. 2) The bore, stroke, and displacement conform to T2 rules (9.1.9.2.D.1.e.1) 3)alternative pistons maintain OE
profile.
b) Valves may be replaced with aftermarket alternatives provided; 1)that the weight of the replacement is equal to or greater
than OE. 2) they are the same size and profile as OE.
c) Valve springs may be replaced with aftermarket alternatives provided they are the same configuration and size as OE +/-.015".
10. Driveshaft and half-shafts may be aftermarket, but shall be the OEM-type and use the same types of materials as stock. Drive
shafts may be replaced by one piece drive shafts, and conversely."

2021-05-01 T1 Request For Reduction in Weight/Penalties for Camaro

#30443 from Bill Baten · Rule change · TB 21-05 (2021-05 Fastrack)

fasterT1 Chevrolet Camaro with 6162 displacement minimum weight reduced to 3500 lbs.

In T1 Spec Lines, Cadillac CTS/CTS-V Chevrolet Camaro w/6162 Displacement, change Min. Weight as follows
"3550 00"

2021-05-01 T1 Fix dry sump Contradictions in T1-LP vs T2

#30596 from Touring Committee · Rule change · TB 21-05 (2021-05 Fastrack)

neutralT1-LP Chevrolet Corvettes C5 Z06, C6 Grand Sport, and Z06 dry sump kit notes clarified to remove contradictions.

In T1-LP Spec Lines, Chevrolet Corvette C-5 Incl. Fxd. Cpe (98-04) Z06 (hardtop) (01-04), change Notes as follows:
"ARE dry sump kit #3021S, Aviad dry sump kit #008-10001 or Dailey dry sump kit ~~permitted:~~ #20-02-0666-assy permitted. 04 90
2371. Leaf spring suspension may be converted to conventional coil over suspension in T1 only."
In T1-LP Spec Lines, Chevrolet Corvette C6 Coupe (05-10) Grand Sport (10-13), change Notes as follows:
"ARE dry sump kit #3021S, Aviad dry sump kit #008-10001 or Dailey dry sump kit permitted: #20-02-0666-assy permitted~~, Dailey~~
~~dry sump kit permitted: 20-02-0666-assy,04 90 2371.~~ Leaf spring suspension may be converted to conventional coilover
suspension in T1 only."
In T1-LP Spec Lines, Chevrolet Corvette Z06 (06-13), change Notes as follows:

Show 3 more lines

"ARE dry sump kit #3021S, Aviad dry sump kit #008-10001 or Dailey dry sump kit permitted: #20-02-0666-assy permitted~~, Dailey~~
~~dry sump kit permitted: 20-02-0666-assy,04 90 2371.~~ Leaf spring suspension may be converted to conventional coilover
suspension in T1 only."

2021-06-01 T1 T1-LP - Add Performance Pack, Bullet, Mach 1 to 18+ Mustang

#29849 from Andrew Aquilante · Rule change · TB 21-06 (2021-06 Fastrack)

fasterT1 Ford Mustang Shelby/GT350/GT500 5.0L Coyote restrictor opens from 65mm to 70mm flat plate.

In T1-LP Spec Lines, Ford Mustang GT5.0L (2018-), add to Notes as follows:
"Performance Pack, Bullet or Mach-1 options allowed with 100lb penalty."
In T1 Spec Lines, Ford Mustang Shelby/Shelby GT350/GT500 (-2018) 5000 Coyote OEM (18-), change Restrictor Required as
follows:
"~~65mm~~ 70mm Flat Plate"
In T1 Spec Lines, Ford Mustang Shelby/Shelby GT350/GT500 (-2018) 5000 Coyote OEM (18-), add to Notes as follows:
"Performance Pack, Bullet or Mach-1 options allowed with 100lb penalty."

2021-06-01 T1 Request BoP for the Viper in 1 LP

#29968 from Scotty White · Rule change · TB 21-06 (2021-06 Fastrack)

fasterT1 Dodge Viper SRT-10 restrictor increases from 45mm to 57mm.

In T1-LP Spec Lines, Dodge Viper SRT-10 Incl. Coupe (08-10), change Notes as follows:
"~~45mm~~ 57mm"

2021-06-01 T1 Request to classify C7 and 13Viper in T1 LP

#29969 from Scotty White · Rule change · TB 21-06 (2021-06 Fastrack)

fasterT1-LP Chevrolet Corvette C7 restrictor increases from 70 to 73 mm.

In T1-LP Spec Lines, Chevrolet Corvette C7, change as follows:
"Chevrolet Corvette C7 incl. Grand Sport"
In T1-LP Spec Lines, Chevrolet Corvette C7, change Notes as follows:
"70 73 mm"

2021-06-01 T1 Request LP Z06 steel chassis

#30589 from DAVID WOODLE · Rule change · TB 21-06 (2021-06 Fastrack)

neutralT1-LP Corvette Z06 06-13 now allows aluminum chassis replacement with equivalent OE steel chassis.

In T1-LP Spec Line, Chevrolet Corvette Z06 (06-13), add to Notes as follows:
"Aluminum chassis may be replaced with an equivalent OE steel chassis."

2021-07-01 T1 Request BoP for the Viper in 1 LP

#29968 from Scotty White · Rule change · TB 21-07 (2021-07 Fastrack)

fasterT1 Dodge Viper SRT-10 restrictor increases from 45mm to 57mm.

In T1-LP Spec Lines, Dodge Viper SRT-10 Incl. Coupe (08-10), change Notes as follows:
"~~45mm~~ 57mm"

2021-07-01 T1 LS6 Alternative Head Question

#30074 from Matthew Henschen · Rule change · TB 21-07 (2021-07 Fastrack)

neutralT1 Chevrolet Corvette Cadillac XLR LS6 engine now permits Casting #799 heads with no other head modifications.

In T1 Spec Lines, Chevrolet Corvette Cadillac XLR, add to Chassis Notes the following:
"Casting #799 heads are permitted on LS6 engines, no other modifications to the head allowed."

Applies to Chevrolet Corvette on this page: James Candelaria, Michael Pettiford, Joe Aquilante

2021-08-01 T1 T1 E46 BOP E&O for Letter # 29970

#30934 from Touring Committee · Rule change · TB 21-08 (2021-08 Fastrack)

slowerT1 BMW E46/E36/Z3 minimum weight increases to 2700 lbs, 3.4L engine car to 2750 lbs.

In T1 Spec Lines, BMW E46, E46-M3, E36, E36-M3, Z3, change as follows:
Min Weight: "~~2600~~ 2700"
Engine Notes: "The 3.4L (87.0 bore x 93.0 stroke) engine is permitted at ~~2650 lbs~~ 2750 lbs."

2021-12-01 T1 Turbo Miata Help

#31315 from Chris Edens · Rule change · TB 21-12 (2021-12 Fastrack)

slowerT1 Mazda MX-5 Miata MazdaSpeed minimum weight rises to 2550 lbs, restrictor increases to 42mm.

In T1 Spec Lines, Mazda MX-5 Miata MazdaSpeed, change Min. Weight as follows:
"~~2350~~ 2550"
In T1 Spec Lines, Mazda MX-5 Miata MazdaSpeed, change Required Restrictor as follows:
"~~39mm~~ 42mm"

2021-12-01 T1 Fix the T1 Corvette heading

#31528 from Touring Committee · Rule change · TB 21-12 (2021-12 Fastrack)

neutralT1 Chevrolet Corvette Cadillac XLR classified for model years through 2019.

In T1 Spec Lines, Chevrolet Corvette Cadillac XLR, add as follows:
"Chevrolet Corvette Cadillac XLR (-2019)"

Applies to Chevrolet Corvette on this page: James Candelaria, Michael Pettiford, Joe Aquilante

2022-03-01 T1 Weight reduction E&O

#30791 from Clark Nunes · Rule change · TB 22-03 (2022-03 Fastrack)

fasterT1 Cadillac CTS/CTS-V, Chevrolet Camaro, Pontiac Firebird, Pontiac GTO LS3 minimum weight reduced to 3475 lbs.

In T1 Spec Lines, Cadillac CTS/CTS-V Chevrolet Camaro Pontiac Firebird Pontiac GTO 6162 Displ. GM LS3, change Min. Weight as
follows:
"~~3500~~ 3475"

2022-03-01 T1 Performance Adjustment Request for Camaro

#31521 from MITCHELL BENDER · Rule change · TB 22-03 (2022-03 Fastrack)

fasterT1 Camaro maximum displacement 7011 loses 50 lbs, to 3500.

In T1 Spec Lines, Cadillac CTS/CTS-V Chevrolet Camaro Pontiac Firebird Pontiac GTO, 7011 Max. Displ., change weight as follows:
"~~3550~~ 3500"

2022-03-01 T1 Remove 33m Brake rotor thickness rule

#31954 from Andrew Aquilante · Rule change · TB 22-03 (2022-03 Fastrack)

fasterT1 removes 33mm brake rotor thickness limit; rotors now unrestricted on thickness.

In GCR. Section 9.1.9.1.O.11, change as follows:
"Rotors- 1 or 2 piece ferrous rotors that do not exceed 355mm in diameter ~~or 33mm in thickness~~ are permitted. Maximum brake
rotor diameter of 380mm is permitted at a 100 pound penalty."

2022-04-01 T1 Viper/Z06 Parity

#31942 from Scotty B White · Rule change · TB 22-04 (2022-04 Fastrack)

fasterT1 Dodge Viper ACR displacement rises to 8400 OEM, minimum weight drops to 3550 lbs.

In T1 Spec Lines, Dodge Viper ACR, change as follows:
Car: "Dodge Viper ACR / SRT RT-10"
Maximum Displ.: "~~8300~~ 8400 OEM"
Min. Weight: "~~3600~~ 3550"

Applies to Dodge Viper ACR-X on this page: Tim Myers

2022-04-01 T1 Discrepancy in T1 allowances

#32293 from Touring Committee · Rule change · TB 22-04 (2022-04 Fastrack)

neutralT1 Limited T1 wording changed to clarify all T1 cars permitted specifications.

In T1, GCR Section 9.1.9.1. Limited T1, change as follows:
"~~In addition to T2 specifications all T1-LP~~ All T1 cars are permitted to:"

2022-04-01 T1 T1 RX7 classification

#32352 from Touring Committee · Rule change · TB 22-04 (2022-04 Fastrack)

neutralT1 Mazda RX-7 classified: 2700 lbs minimum weight, 44mm restrictor, 13B Rotary with single Garrett Turbo #3076.

In T1 Spec Lines, classify Mazda RX-7, as follows:
T1 Maximum
Displ.
Min.
Weight
Required
Restrictor Engine Notes Chassis Notes
Mazda RX-7 2700lbs 44mm TIR 13B Rotary A single Garrett Turbo #3076

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permitted

2022-06-01 T1 Fix FP350S limited prep and Shelby 350 full prep issues

#31680 from Tim Myers · Rule change · TB 22-06 (2022-06 Fastrack)

fasterT1-LP Ford Mustang FP350S restrictor increases from 70mm to 75mm.

In T1-LP Spec Lines, Ford Mustang FP350S (2017), change restrictor as follows:
"~~70mm~~ 75mm"

2022-06-01 T1 Request to Classify AMG GT4

#32610 from Mark Boden · Rule change · TB 22-06 (2022-06 Fastrack)

neutralMercedes Benz AMG GT4 2017-2021 classified T1 Maximum at 3400 lbs minimum weight with HP-controlled SRO Power Level 2 engine.

In T1 Spec Lines, classify Mercedes Benz AMG GT4 (2017-2021) as follows:
T1 Maximum
Displ.
Min.
Weight
Required
Restrictor Engine Notes Chassis Notes
Mercedes Benz AMG GT4

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(2017-2021)
3982cc 3400 HP controlled
with required
program
SRO Power level 2
2019 map
required.
The car must be raced as FIA
homologated. Must participate at
3 Super Tour races to establish
Runoffs eligibility. Visual
verification of “SRO power level 2”
on dashboard required. Must
conform to DOT tire rule.

Applies to Mercedes Benz AMG GT4 on this page: Tony Ave, Mark Boden

2022-08-01 T1 Correct Camaro Spec Line From Letter #30791 response to 3475lbs

#32824 from Clark Nunes · Rule change · TB 22-08 (2022-08 Fastrack)

fasterT1 Cadillac CTS/CTS-V, Chevrolet Camaro, Pontiac Firebird, Pontiac GTO 6162 OEM minimum weight reduced to 3475 lbs.

In T1 Spec Lines, Cadillac CTS/CTS-V Chevrolet Camaro Pontiac Firebird Pontiac GTO 6162 OEM, change Min. Weight as follows:
"~~3500~~ 3475"

2023-01-01 T1 GT4 section to Current T1 Rules.

#33632 from Touring Committee · Rule change · TB 23-01 (2023-01 Fastrack)

neutralEight GT4 models added to T1 with weights from 3200 to 3575 lbs and restricted power per SRO 2022 rules.

In T1, Spec Lines, add the following Spec Lines to the current spec lines:

A specification table follows in the original; it is not shown here.

2023-02-01 T1 Corrections to T1 Spec Lines

#33678 from Touring Committee · Rule change · TB 23-02 (2023-02 Fastrack)

unclearGT4 McLaren 570S maximum tire size changes to 285 front, 315 rear.

In Touring 1 - GT4 Spec Lines, Maclaren 570S GT4, change Tire Size (max) as follows:
"285 (f)
315 (r)"

2023-03-01 T1 Sequential Gearbox Limitations in T1

#33691 from David Mead · Rule change · TB 23-03 (2023-03 Fastrack)

neutralT1 cars with aftermarket sequential transmissions get 10-inch max bellhousing; non-sequential cars gain 100 lbs weight break.

In GCR, Section 9.1.9.1.I.4., change as follows:
"Aftermarket sequential transmissions are permitted. Cars with aftermarket sequential shift transmissions shall utilize a 1:1 (or
greater/overdriven) ratio in top gear. Transmission location must be OEM. Maximum bellhousing length is 10 inches. Cars that
don’t use an aftermarket sequential transmission may decrease their competition weight by 100 lbs."

2023-03-01 T1 T1 GT4 adjustments

#33786 from Touring Committee · Rule change · TB 23-03 (2023-03 Fastrack)

fasterT1 GT4 all nine cars lose 125 lbs minimum weight with driver, from 3200–3575 to 3075–3450.

In Touring 1 - GT4 Spec Lines, change Min. Weight with Driver (LBS) as follows:
Aston Martin Vantage AMR GT4: "~~3575~~ 3450"
Audi R8 GT4: "~~3550~~ 3425"
BMW M4 GT4: "~~3500~~ 3375"
Ford Mustang GT4: "~~3550~~ 3425"
Maclaren 570S GT4: "~~3450~~ 3325"
Mercedes AMG GT4: "~~3450~~ 3325"
Porsche 718 Cayman GT4 CS MR: "~~3200~~ 3075"

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Porsche 718 GT4 RS Clubsport: "~~3450~~ 3325"
Toyota Supra GR GT4: "~~3350~~ 3225"

2023-03-01 T1 Sunset of pre 2023 Touring 1 Rules.

#33916 from Touring Committee · Rule change · TB 23-03 (2023-03 Fastrack)

neutralT1 removes GCR Section 9.1.9.1.A. and T1 Spec Lines entirely, sunsetting pre-2023 Touring 1 rules.

In T1, GCR Section 9.1.9.1.A., remove in its entirety.
In T1 Spec Lines, remove in its entirety.

2023-04-01 T1 Clarification for Camaro Gen5 2010-2015

#33739 from Clark Nunes · Rule change · TB 23-04 (2023-04 Fastrack)

slowerT1 Chevrolet Camaro Gen5 LS3-6160 adds 70mm flat plate restrictor, weight 3550 lbs.

In T1 Spec Lines, Chevrolet Camaro Gen 5 ('10-'15) Including SS, Z28, classify Spec Line Number 1135 as follows:

A specification table follows in the original; it is not shown here.

Applies to Chevrolet Camaro Z28 on this page: Bill Baten, Clark Nunes

2023-05-01 T1 T1 GT4 adjustments

#33786 from Touring Committee · Rule change · TB 23-05 (2023-05 Fastrack)

neutralT1 GT4 weights clarified for nine cars, ranging from 3200 lbs Porsche 718 Cayman to 3575 lbs Aston Martin.

RM 23-04 – Touring 1 weights dated 3/21/2023
As an E&O to the February Fastrack, in T1-GT4 leave weights as follows:
Aston Martin Vantage AMR GT4: 3575
Audi R8 GT4: 3550
BMW M4 GT4: 3500
Ford Mustang GT4: 3550
Maclaren 570S GT4: 3450
Mercedes AMG GT4: 3450

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Porsche 718 Cayman GT4 CS MR: 3200
Porsche 718 GT4 RS Clubsport: 3450
Toyota Supra GR GT4: 3350

2023-05-01 T1 Touring 1 Tire Sizes

#34191 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)

fasterT1-GT4 McLaren 570S and Mercedes AMG GT4 front tires widen to 315 mm.

RM 23-05 – Touring 1 Tire Sizes dated 3/21/2023
In T1-GT4 change tire sizes as follows:
Maclaren 570S GT4 ~~(f)285~~ 315
~~(r)315~~
Mercedes AMG GT4 ~~(f)275~~ 315
~~(r)315~~

2023-06-01 T1 Request to reinstate T1 S197 Mustang

#34048 from David Mead · Rule change · TB 23-06 (2023-05 Fastrack)

neutralT1 Ford Mustang S197 (05-14) reinstated with 3550 lbs minimum weight, 75mm restrictor, Voodoo engine permitted.

In T1 Spec Lines, classify Ford Mustang S197 (05-14) Includes GT, Boss302, 302S, 302R, FR500C, FR500S as follows:

A specification table follows in the original; it is not shown here.

Applies to Ford Mustang on this page: Andrew Aquilante, David Marshall, Timothy Rubright, Ronald Lombardo, Don Van Nortwick

2023-07-01 T1 Gen 5 Camaro Engine

#33875 from Matt Spicuzzi · Rule change · TB 23-06 (2023-07 Fastrack)

neutralT1 Chevrolet Camaro Gen 5 LS7 gets two spec lines: 1131 with 70mm restrictor, 1136 with 53mm restrictor, both 3450 lbs minimum.

In T1-NEW Spec Lines, Chevrolet Camaro Gen 5 (10-15) Including SS, Z28, classify Spec Line Number 1131 and 1136 as follows:

A specification table follows in the original; it is not shown here.

2023-07-01 T1 Inquiry to letter #33682

#34071 from Andrew Aquilante · Rule change · TB 23-06 (2023-07 Fastrack)

slowerT1 Chevrolet Camaro Gen 5, Corvette C5 and C6: engine resleeve restricted to stock parameters only, no longer LS3 bore/stroke.

In T1 NEW Spec Lines, Chevrolet Camaro Gen 5 (10-15) Including SS, Z28, change Engine Notes as follows:
1130: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
1135: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement~~.May resleeve to stock parameters for engine repair
or replacement."
In T1 NEW Spec Lines, Chevrolet Corvette C5 (‘97-’04) – Includes: Z06, Coupe, Convertible, change Engine Notes as follows:
1132: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."

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1134: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
1136: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
1138: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
In T1 NEW Spec Lines, Chevrolet Corvette C6 (05-13) - Includes Z51, GrandSport, Z06, Z06 Carbon, change Engine Notes as
follows:
1150: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
1160: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
1170: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
1180: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."
1190: "~~May resleeve any LS block to LS3 bore/ stroke for Engine replacement.~~ May resleeve to stock parameters for engine repair
or replacement."

2023-07-01 T1 Viper Cleanup

#34107 from Scotty B White · Rule change · TB 23-06 (2023-05 Fastrack)

fasterT1 Dodge Viper ACR/ACR-X restrictor increases from 50mm to 60mm flat plate.

In T1 NEW Spec Lines, Dodge Viper ACR/ACR-X Spec Line 1360, change Required Restrictor as follows:
"~~50mm~~ 60mm flat plate"

2023-07-01 T1 Viper 8300 OEM FPR Size

#34268 from Scotty B White · Rule change · TB 23-06 (2023-05 Fastrack)

unclearT1 Dodge Viper ACR/ACR-X: Spec Line 1370 restrictor increases to 55mm, Line 1390 decreases to 55mm.

In T1 NEW Spec Lines, Dodge Viper ACR/ACR-X Spec Line 1370, change Required Restrictor as follows:
"(2) ~~47mm~~ 55mm flat plates"
In T1 NEW Spec Lines, Dodge Viper ACR/ACR-X Spec Line 1390, change Required Restrictor as follows:
"(2) ~~60mm~~ 55mm flat plates"

2023-07-01 T1 Ford Mustang S197 (05-14) Clarification

#34450 from Club Racing Board · Rule change · TB 23-06 (2023-05 Fastrack)

neutralT1 Ford Mustang S197 05-14 now requires OEM 8.8 differential housing.

In T1-NEW Spec lines, Ford Mustang S197 (05-14) Includes GT, Boss302, 302S, 302R, FR500C, FR500S, change Notes as follows:
"OEM 8.8 Differential Housing"

2023-08-01 T1 C5 Approved Aero That Was Mistakenly Deleted

#34374 from Joe Aquilante · Rule change · TB 23-08 (2023-08 Fastrack)

fasterT1 Corvette C5 gains approved aero parts: carbon rear spoiler, vented front splitter, side skirts, with 50 lb weight reduction allowed.

In T1 NEW Spec Lines, Chevrolet Corvette C5 (‘97-’04) – Includes: Z06, Coupe, Convertible, Spec Lines 1132-1138, add to Notes
as follows:
"Any option of OEM Bodywork parts may be used as basis for aero measurements. Rear spoiler max 5” Above bumper allowed.
+50lbs. The following parts are permitted, with a 50lb decrease from base weight, in lieu of the aero options permitted in
9.1.9.1.B: (C7Carbon Rear- Spoiler CCC5 EX- RSB-GB, Vented Front Splitter CCC5-FS-GB, Side Skirts CCC5 SS-GB.)"

2023-08-01 T1 Why no Camaro?

#34421 from Scotty B White · Rule change · TB 23-08 (2023-05 Fastrack)

neutralChevrolet Camaro GT4-R classified in T1 GT4 Spec Line 4035, minimum weight 3375 lbs, 315 max tire, 63mm restrictor, ineligible for Runoffs.

In T1 GT4 Spec Lines, classify Chevrolet Camaro GT4-R as follows:

A specification table follows in the original; it is not shown here.

2023-08-01 T1 Request to Remove Expiration from T1 spec lines #1350 & #1370

#34470 from Scotty B White · Rule change · TB 23-08 (2023-05 Fastrack)

neutralT1 Dodge Viper ACR / SRT RT-10 and ACR/ACR-X spec lines 1350 and 1370 remove 12/23 expiration.

In T1 NEW Spec Lines, Dodge Viper ACR / SRT RT-10, change Spec Line Number as follows:
"1350 ~~*Spec line Expires 12/23*~~"
In T1 NEW Spec Lines, Dodge Viper ACR/ACR-X, change Spec Line Number as follows:
"1370 ~~*Spec line Expires 12/23*~~"

2023-08-01 T1 Remove

#34475 from Touring Committee · Rule change · TB 23-08 (2023-05 Fastrack)

neutralT1 GT4 McLaren 570S, Mercedes AMG GT4, and Porsche 718 Cayman GT4 CS MR now eligible for Runoffs competition.

In T1 GT4 Spec Lines, Maclaren 570S GT4, Spec Line Number 4050, remove Notes as follows:
"~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**~~"
In T1 GT4 Spec Lines, Mercedes AMG GT4, Spec Line Number 4060, remove Notes as follows:
"~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**~~"
T1 GT4 Spec Lines, Porsche 718 Cayman GT4 CS MR, Spec Line Number 4070, remove Notes as follows:
"~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**~~"

2023-08-01 T1 Error in T1 GT4 numbering scheme-

#34578 from Touring Committee · Rule change · TB 23-08 (2023-05 Fastrack)

neutralT1 GT4 BMW M4 Spec Line Number changed from 4050 to 4030.

In T1 GT4 Spec Lines, BMW M4, change Spec Line Number as follows:
"~~4050~~ 4030"

2023-12-01 T1 New T1 add spec line for C5 corvette LS2 engines (Copy from C6)

#33764 from Craig Anderson · Rule change · TB 23-12 (2023-09 Fastrack)

neutralT1 Chevrolet Corvette C5 LS2 added with 6000cc displacement, 3300 lbs minimum weight, 72mm flat plate restrictor.

In T1 Spec Lines, classify Chevrolet Corvette C5 (‘97-’04) – Includes: Z06, Coupe, Convertible as follows:

A specification table follows in the original; it is not shown here.

Applies to Chevrolet Corvette on this page: James Candelaria, Michael Pettiford, Joe Aquilante

2023-12-01 T1 2004 - 2006 Pontiac GTO Re-Integration Back Into T1

#34403 from Ed Gless · Rule change · TB 23-12 (2023-12 Fastrack)

neutralPontiac GTO 2006-2009 re-integrated into T1 with LS2 at 3400 lbs, 72mm restrictor, and LS3 at 3500 lbs, 61mm restrictor.

In T1 Spec Lines, classify Pontiac GTO 2006-2009 as follows:

A specification table follows in the original; it is not shown here.

2023-12-01 T1 Request to Classify Porsche 997-1 GT3 Cup

#34561 from Scotty B White · Rule change · TB 23-12 (2023-12 Fastrack)

neutralT1 Porsche 997-1 GT3 Cup added at spec line 4210, minimum weight 3050 lbs.

In T1 Spec Lines, delete the Porsche 996 GT3 Cup car from the standard spec lines and classify "Homologated car" section as
follows:
T1 – Homologated Cars

A specification table follows in the original; it is not shown here.

2023-12-01 T1 C7 Corvette Rule Change Request

#34897 from Heath Karl · Rule change · TB 23-12 (2023-09 Fastrack)

neutralT1 Chevrolet Corvette C7 (14-19) including Z51, Grandsport newly classified as homologated car.

In T1 Spec Lines, classify Chevrolet Corvette C7 (14 - 19) - Includes Z51, Grandsport as follows:
T1 – Homologated Cars

A specification table follows in the original; it is not shown here.

Applies to Chevrolet Corvette on this page: Joe Aquilante

2023-12-01 T1 Camaro Gen 5 Weight Reduction Due to Competitive Disadvantage

#35092 from Clark Nunes · Rule change · TB 23-12 (2023-09 Fastrack)

fasterT1 Gen 5 Camaro minimum weight drops 75 lbs to 3475; restrictor increases 70mm to 75mm.

In T1 Spec Lines, Gen 5 Camaro, change as follows:
Spec Line 1130 - Minimum Weight "~~3550~~ 3475"
Spec Line 1135 - Minimum Weight "~~3550~~ 3475"
Restrictor Required "~~70mm~~ 75mm-Flat Plate"

2023-12-01 T1 Addendum to Letter #35022: Drivetrain Rule

#35105 from Clyde Greene · Rule change · TB 23-12 (2023-09 Fastrack)

neutralT1 Aston Martin Vantage permitted to use OEM Sportshift II transmission.

In T1 Spec Lines, Aston Martin Vantage, add to Chassis Notes as follows:
"OEM Sportshift II transmission permitted."

2024-01-01 T1 GT4 batch adjustment in T1

#35162 from Touring Committee · Rule change · TB 24-01 (2024-01 Fastrack)

unclearT1-GT4 batch adjustments: five cars lighter, two heavier, restrictors and ECU maps changed, five models now eligible for Runoffs.

In GCR, Section 9.1.9.1.A.T., change as follows:
"Tires- Tires ~~must conform to GCR section 9.3.TIRES and als~~ o must conform to spec line requirements. DOT approved tires are
permitted. Slicks conforming to the spec line are permitted."
In Touring 1 - Homologated Cars Spec Lines, 4100- BMW M2 ClubSport Racing, change Must Conform To as follows:
"Tires conforming to SRO TCX rules allowed. ~~Must meet factory specs.~~"
In Touring 1 - Homologated Cars Spec Lines, 4120- Ford Mustang FP350S 2017, change as follows:
Must Conform To: "Tires conforming to Trans Am SGT tire rules allowed ~~Must meet factory specs.~~"
Chassis Notes: "VIN not required. Additional permitted allowances: ~~DOT tires required. Other~~ consumables are open, alternate

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driveshaft permitted, aftermarket wheels and fuel cell per Touring category rules permitted. Shocks conforming to T1 rules
permitted. Alternative rear toe links permitted."
In T1-GT4 Spec Lines, change Chassis Notes as follows:
Aston Martin Vantage AMR GT4: "~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)*~~* Slick tires conforming to IMSA GT4
or SRO GT4 specs are permitted."
Audi R8 GT4: "~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)*~~*Slick tires conforming to IMSA GT4 or SRO GT4 specs
are permitted."
BMW M4 GT4: "~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)*~~*Slick tires conforming to IMSA GT4 or SRO GT4 specs
are permitted."
Chevrolet Camaro GT4-R: "~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)*~~*Slick tires conforming to IMSA GT4 or SRO
GT4 specs are permitted."
Ford Mustang GT4: "~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)*~~*Slick tires conforming to IMSA GT4 or SRO GT4
specs are permitted."
Maclaren 570S GT4: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted."
Mercedes AMG GT4: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted."
Porsche 718 Cayman GT4 CS MR: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted."
Porsche 718 GT4 RS Club-sport: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted."
Toyota Supra GR GT4: "~~**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)*~~*Slick tires conforming to IMSA GT4 or SRO GT4
specs are permitted."
In T1-GT4 Spec Lines, change as follows:
Aston Martin Vantage AMR GT4:
Weight: “~~3575~~ 3490”
Performance Control: “~~SRO power level ECU Map 3~~ IMSA Map id 11”
Chevrolet Camaro GT4-R:
Weight: “~~3375~~ 3435”
Performance Control: “63 62mm”
Ford Mustang GT4:
Weight: “~~3550~~ 3535”
Performance Control: “63 71mm SRO compliant restrictor IMSA ECU Cal”
Maclaren 570S GT4:
Weight: “~~3450~~ 3250”
Performance Control: “~~SRO 2019 BOP ECU map~~ SRO Rest 1”
Mercedes AMG GT4:
Weight: “~~3450~~ 3470”
Performance Control: “~~Power level 2~~ map 5”
Porsche 718 Cayman GT4 CS MR:
Weight: “~~3200~~ 3250”
Performance Control: “54 53.7mm”
Toyota Supra GR GT4:
Weight: “~~3350~~ 3315”

2024-01-01 T1 Remove T1 spec lines

#35192 from Touring Committee · Rule change · TB 24-01 (2024-01 Fastrack)

neutralT1 spec lines 1000, 1010, 1020, 1040, 1360, 1400–1410, 1520–1680, 1700–1720 deleted entirely.

In T1 Spec Lines, delete the following spec line numbers in their entirety:

A specification table follows in the original; it is not shown here.

2024-02-01 T1 C8 Corvette T1 Restrictor Plate Request

#35213 from Garry Crook · Rule change · TB 24-02 (2024-02 Fastrack)

fasterC8 Corvette T1 restrictor plate increases from 70mm to 72mm flat plate.

In T1 NEW Spec Lines, Chevrolet Corvette C8 (20- 23) - Includes Z51, #1210, change Required Restrictor as follows:
"~~70mm~~ 72mm - Flat Plate"

2024-02-01 T1 The Cars Have Expired

#35379 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

neutralT1 NEW class removes 23 spec lines including Acura NSX, Ferrari, Porsche 996, Nissan Z cars, and others; Porsche 997 spec line 1680 expiration removed.

In GCR Contents, change as follows:
"9.1.9.1 TOURING (T1) CATEGORY ~~NEW~~
T1 ~~NEW~~"
In GCR, Section 9.1.9.1.Touring (T1) NEW Category Specifications, change as follows:
"9.1.9.1.Touring (T1) ~~NEW~~ Category Specifications"
In T1 NEW Spec Lines, change as follows:
"9.1.9.1.A T1 ~~NEW~~ Spec Lines"
"T1 ~~NEW~~"

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In T1 NEW Spec Lines, delete the following Spec Lines in their entirety:
"Acura NSX (Spec Line 1000)
Acura NSX Turbo (Spec Line 1010)
Acura NSX Turbo World Challenge (Spec Line 1020)
Audi TTRS (GTS 2011 Spec) (Spec Line 1040)
Dodge Viper ACR/ACR-X (Spec Line 1360)
Ferrari 360 (Spec Line 1400)
Ferrari 430 (Spec Line 1410)
Ferrari 430 Challenge (Spec Line 1420)
Mazda MX-5 (06-15) (Spec Line 1520 and 1530)
Mazda RX-7 (Spec Line 1540)
Nissan GTR (Spec Line 1550)
Nissan 350/370Z (Spec Line 1560)
Nissan 370Z Supercharged (Spec Line 1570)
Nissan 350Z (Spec Line 1580)
Nissan 350Z/370Z (Spec Line 1590)
Porsche Cayman/S/GTS (05-15) (Spec Line 1600, 1610 and 1620)
Porsche Cayman GTS (2011) (Spec Line 1630)
Porsche 928 S4 Porsche 928 GTS-R (Spec Line 1640)
Porsche 996 (Spec Line 1650)
Porsche 996 TT OEM (Spec Line 1660)
Subaru WRX, WRX STI (05-2020) (Spec Line 1700)
Toyota Celica All-Trac (Spec Line 1710)
Toyota Supra MK4 (Spec Line 1720)"
In T1 NEW Spec Lines, Porsche 997, change Spec Line Number as follows:
"1680 ~~*Spec line Expires 12/23*~~"

2024-03-01 T1 9.1.9.1 T1 new category item/ line 26 rule to expire Jan 1 2023

#35411 from Geoffrey Hegel · Rule change · TB 24-03 (2024-03 Fastrack)

neutralPontiac GTO 2006-2009 LS1 added to T1 as Spec Line 1590, 5700 cc, 3400 lbs minimum.

In T1 Spec Lines, classify Pontiac GTO 2006-2009 as Spec Line Number 1590 as follows:

A specification table follows in the original; it is not shown here.

2024-04-01 T1 Honda S2000

#35582 from Touring Committee · Rule change · TB 24-04 (2024-04 Fastrack)

neutralT1 Honda S2000 classified with 2400 lb minimum weight, 2950 cc displacement, 4.75" supercharger pulley.

In T1 Spec Lines, classify Honda S2000 as follows:

A specification table follows in the original; it is not shown here.

2024-05-01 T1 Please Expedite classing the C63 Mercedes

#35987 from Touring Committee · Rule change · TB 24-05 (2024-05 Fastrack)

neutralMercedes AMG-C63 S (2023) classified in T1 with 4000 lbs minimum weight and 3700 restrictor.

In T1 Spec Lines, classify Mercedes AMG-C63 S (2023) as follows:

A specification table follows in the original; it is not shown here.

Runoffs 2024 → Runoffs 2025 2024-10-01 to 2025-09-29

2024-12-01 T1 Changes to T1 Tires for GT4 and Other Cars

#35383 from Andrew Aquilante · Rule change · TB 24-12 (2024-12 Fastrack)

unclearT1 GT4 tire sizes adjusted across ten cars: most non-DOT rear to 305/660, Audi and McLaren 305/645, Camaro and Mustang 305/680.

In T1 GT4 Spec Lines, change Tire Size as follows:
Aston Martin Vantage AMR GT4 4010: "315 DOT, 305/660 Non-DOT"
Audi R8 GT4 - Spec Line #4020: "315 DOT, 305/645 Non-DOT"
BMW M4 GT4 - Spec Line #4030: "315 DOT, 305/660 Non-DOT"
Chevrolet Camaro GT4-R- Spec Line #4035: "315 DOT, 305/680 Non-DOT"
Ford Mustang GT4 - Spec Line #4040: "315 DOT, 315/680 Non-DOT"
Mclaren 570S GT4 - Spec Line #4050: "315 DOT, 305/645 Non-DOT"
Mercedes AMG GT4 - Spec Line #4060: "315 DOT, 305/660 Non-DOT"

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Porsche 718 Cayman GT4 CS MR - Spec Line #4070: "315 DOT, 305/660 Non-DOT"
Porsche 718 GT4 RS Clubsport - Spec Line #4080: "315 DOT, 305/660 Non-DOT"
Toyota Supra GR GT4 - Spec Line #4090: "315 DOT, 305/660 Non-DOT"

2024-12-01 T1 G82 M4 GT4 inclusion in T1

#35864 from Denny Stripling · Rule change · TB 24-12 (2024-12 Fastrack)

neutralBMW M4 GT4 (G82) added to T1 GT4 at 3525 lbs minimum weight with Red power stick control.

In T1 GT4 Spec Lines, SL#4030, change as follows:
Model: "BMW M4 GT4 (F82)"
Performance Control: "~~Gold power stick~~ Red power stick"
In T1 GT4 Spec Lines, classify BMW M4 GT4 (G82) as follows:

A specification table follows in the original; it is not shown here.

2024-12-01 T1 Alt. Clutch Allowance

#36606 from Hugh Stewart · Rule change · TB 24-12 (2024-12 Fastrack)

neutralT1 Spec Lines now permits 5.5 inch clutch in Engine Notes.

In T1 Spec Lines, SL# 1050, change add to Engine Notes the following:
"5.5 inch clutch permitted."

2024-12-01 T1 BOP Changes Need Updates

#36667 from Joe Rainey · Rule change · TB 24-12 (2024-12 Fastrack)

fasterT1 GT4 Spec Line 4020 restrictor opens from 44mm to 45mm, minimum weight drops to 3400 lbs.

In T1 GT4 Spec Lines, Spec Line 4020, change as follows:
Performance Control: Power level 2020, ~~44mm~~ 45mm SRO compliant restrictor"
Min. Weight with driver (LBS): "~~3550~~ 3400"

2024-12-01 T1 Request Ford Performance Darkhorse R in T1

#37136 from Christopher Childs · Rule change · TB 24-12 (2024-12 Fastrack)

neutralMustang Darkhorse R added to T1 homologated cars at 3,250 lbs minimum with 305/315 tires, ineligible for Runoffs until 3 Super Tour events.

In T1-Homologated Cars Spec Line, classify Mustang Darkhorse R (Mustang Challenge) as follows:
T1 – Homologated Cars

A specification table follows in the original; it is not shown here.

2024-12-01 T1 Car Mods for T1 Corvette under line item 1150

#37173 from Thomas Napolitano · Rule change · TB 24-12 (2024-12 Fastrack)

neutralT1 Corvette may roll or flatten wheel opening lips for tire clearance; plastic fenders may remove lips if edge thickness matches basic material.

In GCR, Section 9.1.9.1.A.2,, add the following:
"It is permitted to roll under or flatten any interior lip on the wheel opening for tire clearance. Cars with plastic/composite
fenders may remove any interior wheel opening lip, but the resulting material edge shall be no thinner than the basic fender
material thickness. Non-metallic inner fender liners may be removed. Vents may be added to fenders."

2024-12-01 T1 Increased Bore Throttle Bodies for E46 M3 S54 Engine

#37273 from Mark Pfeffer · Rule change · TB 24-12 (2024-12 Fastrack)

fasterT1 E46 M3 S54 can now use Dinan Throttle Body #D760-3400 on 3.250L engine.

In T1 Spec Lines, E46 M3 Spec Line # 1050, add to Engine Notes the following:
"Dinan Throttle Body #D760-3400 allowed on the 3.250L."

2025-02-01 T1 T1 Parity Compared to GT4

#37170 from Tony Ave · Rule change · TB 25-02 (2025-02 Fastrack)

slowerT1 Mustang gains 125 lbs to 3600, restrictor shrinks 65mm to 60mm. Corvette gains 50 lbs to 3500, restrictor shrinks 70mm to 67mm. BMW deleted.

In T1 Spec Lines, change Weight and Restrictor Required as follows:
Mustang - Spec Line 1430
Weight: "~~3475~~ 3600"
Restrictor Required: "~~65mm~~ 60mm - FPR"
Corvette Spec Line 1190
Weight: "~~3450~~ 3500"
Restrictor Required: "~~70mm~~ 67mm - Flat Plate"
In T1 Spec Lines, delete Spec Line BMW # 1190 in its entirety.

2025-02-01 T1 Clarification of Request Approval #37273

#37399 from Mark Pfeffer · Rule change · TB 25-02 (2025-02 Fastrack)

unclearT1 E46 M3 Spec Line 1050 allows VAC Motorsports throttle body VAC-TB-S54 on 3.250L engine instead of Dinan.

In T1 Spec Lines, E46 M3 Spec Line # 1050, change Engine Notes as follows:
"~~Dinan Throttle Body #D760-3400~~ VAC Motorsports #VAC-TB-S54 allowed on the 3.250L."

2025-02-01 T1 C8 Corvette Facts

#37400 from Garry Crook · Rule change · TB 25-02 (2025-02 Fastrack)

fasterT1 Chevrolet Corvette C8 (2023-23) minimum weight reduced from 3600 lbs to 3500 lbs.

In T1 Spec Lines, Chevrolet Corvette C8 (20- 23) - Includes Z51, Spec Line # 1210, change Min. Weight as follows:
"~~3600~~ 3500"

Applies to Chevrolet Corvette on this page: Joe Aquilante

2025-02-01 T1 Camaro Gen 5 Competitive Disadvantage

#37440 from Clark Nunes · Rule change · TB 25-02 (2025-02 Fastrack)

fasterT1 Chevrolet Camaro Gen 5 restrictor increases from 75mm to 80mm flat plate.

In T1 Spec Lines, Chevrolet Camaro Gen 5 (10-15) Including SS, Z28 Spec Line 1135, change Required Restrictor as follows:
~~"75mm~~ 80mm - Flat Plate"

Applies to Chevrolet Camaro Z28 on this page: Bill Baten, Clark Nunes

2025-02-01 T1 Tire Changes in the Rules for GT4

#37497 from Joe Rainey · Rule change · TB 25-02 (2025-02 Fastrack)

unclearT1 Audi R8 GT4 Spec Line #4020 maximum tyre size changes to 315 DOT, 305/645, or 30/65-18 (f), 33/68-18 (r) Non-DOT.

In T1-GT4 Spec Lines, Audi R8 GT4 Spec Line #4020, change Max Tire Size as follows:
"315 DOT, 305/645, or 30/65-18 (f), 33/68-18 (r) Non-DOT"

2025-03-01 T1 Correct and make new T1 BOP adjustments.

#37737 from Touring Committee · Rule change · TB 25-03 (2025-03 Fastrack)

unclearT1 Mustang Spec 1430 restrictor opens 60mm to 65mm; Spec 1460 weight rises to 3500 lbs, restrictor 70mm; Corvette 1190 restrictor opens 67mm to 70mm; BMW 1090 restrictor narrows 40mm to 35mm; BMW 1100 weight rises to 3350 lbs.

In T1 Spec Lines, change Weight, Restrictor Required and/or Notes as follows:
Mustang - Spec Line 1430:
Restrictor Required: "~~60mm~~ 65mm - FPR"
Mustang - Spec Line 1460:
Weight: "~~3425~~ 3500"
Restrictor Required: "70mm - FPR"
Corvette Spec Line 1190:
Restrictor Required: "~~67mm~~ 70mm - Flat Plate"

Show 5 more lines

BMW - Spec Line 1090:
Required Restrictor: "(2) X ~~40mm~~ 35mm diameter hole inlet restrictor plate required"
Chassis Notes: "This spec line is set to expire 12/31/25."
BMW - Spec Line 1100:
Minimum Weight: "~~3150~~ 3350”

2025-04-01 T1 Cadillac CT4-V Blackwing

#38003 from Touring Committee · Rule change · TB 25-04 (2025-04 Fastrack)

neutralCadillac CT4-V Blackwing added to T1 Spec Line 1115, 3564cc, 3750 lbs minimum weight.

In T1 Spec Lines, classify Cadillac CT4-V Blackwing as follows:

A specification table follows in the original; it is not shown here.

2025-05-01 T1 Acceptance of Porsche 981 GT4 Clubsport into T1

#36664 from John Brown · Rule change · TB 25-05 (2025-05 Fastrack)

neutralPorsche 981 GT4 Clubsport added to T1 as spec line 4085, minimum weight 3100 lbs with driver.

In T1-GT4 Spec Lines, classify Porsche 981 GT4 Clubsport as follows:

A specification table follows in the original; it is not shown here.

2025-05-01 T1 Request to Restore T1 Honda S2000 to Proper Weights

#37644 from David Mead · Rule change · TB 25-05 (2025-05 Fastrack)

fasterT1 Honda S2000 minimum weight reduced from 2950 lbs to 2900 lbs.

In T1 Spec Lines, Honda S2000, Spec Line 1530, change as follows:
Minimum Weight: "~~2950~~ 2900"
Chassis Notes: "This spec line is set to expire as of 12/31/2025 if not represented in Majors competition in 2025."

2025-05-01 T1 DCT Transmission in E46

#37964 from Matt Spicuzzi · Rule change · TB 25-05 (2025-05 Fastrack)

neutralT1 BMW E46 M3 permits BMW #GS7D36SG aftermarket sequential transmission in SL# 1060 and 1070.

In T1 Spec Lines, BMW E46 M3, add to Chassis Notes the following:
SL# 1060: "BMW #GS7D36SG transmission permitted as an aftermarket sequential option."
SL# 1070: "BMW #GS7D36SG transmission permitted as an aftermarket sequential option."

Applies to BMW E46 M3 on this page: Hugh Stewart, Christina Lam

2025-05-01 T1 Reduce E92 M3 Minimum Weight to 3050

#38092 from Shane Brown · Rule change · TB 25-05 (2025-05 Fastrack)

fasterT1 BMW M3 E92 minimum weight reduced to 3300 lbs.

In T1 Spec Lines, BMW M3 E92 (08-13), Spec Line 1100, change Min. Weight as follows:
~~"3350~~ 3300"

2025-05-01 T1 Finalize Spec Line for T1 Darkhorse

#38106 from Touring Committee · Rule change · TB 25-05 (2025-05 Fastrack)

fasterT1 Mustang Darkhorse R gets 315 front and rear tyres, loses 500 lbs minimum weight to 3600.

In T1 Spec Lines, Mustang Darkhorse R (Mustang Challenge) Spec Line- 4119, change as follows:
Tire size: "~~305~~ 315 (f) 315(r)"
Performance Control: "~~TBD~~"
Min. Weight with driver (LBS): "~~10.5 (f) 11 (r)~~ 3600"
Chassis Notes: "Must conform to Mustang Challenge Rules. Tires conforming to Mustang Challenge rules are permitted. **This
car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**"

What the rules allowed changed as listed; this does not say what any particular car ran.