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, Runoffs 2026 only. Runoffs 2020 (different number of sectors), Runoffs 2024 (different number of sectors) count towards whole-lap times and trap speed only.
10 laps are left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.
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 1.26 mi
S2 I4AT → I11 1.65 mi
S3 I11 → I13AB 0.57 mi
S4 I13AB → SF 0.57 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
Honda CR-X
STL
3
2:30.063Joe Moser
2:30.063Joe Moser
2:30.245Joe Moser
134.3Joe Moser
43.378Jose Osiris Pena
58.005Jose Osiris Pena
29.436Jose Osiris Pena
20.412Jose Osiris Pena
Honda CR-X Si
STL
1
2:30.063Joe Moser
2:30.063Joe Moser
2:30.245Joe Moser
134.3Joe Moser
Honda CR-X
STL
2
2:30.264Jose Osiris Pena
2:30.264Jose Osiris Pena
2:30.415Jose Osiris Pena
133.0Deacon Greenfield
43.378Jose Osiris Pena
58.005Jose Osiris Pena
29.436Jose Osiris Pena
20.412Jose Osiris Pena
Mazda MX-5
STL
9
2:30.242Danny Steyn
2:30.242Danny Steyn
2:30.657Danny Steyn
131.3Danny Steyn
43.115Danny Steyn
57.522Danny Steyn
29.219Danny Steyn
20.369Danny Steyn
Honda Civic
STL
3
2:30.537Derek Ketchie
2:30.537Derek Ketchie
2:30.768Derek Ketchie
134.6Derek Ketchie
43.037Derek Ketchie
57.615Derek Ketchie
29.205Derek Ketchie
20.088Derek Ketchie
SCCA Ent SRF3
STL
1
2:30.608Todd Vanacore
129.5Todd Vanacore
43.260Todd Vanacore
57.260Todd Vanacore
29.110Todd Vanacore
20.204Todd Vanacore
Honda CRX
STL
5
2:31.175Jose Osiris Pena
2:32.518Jose Osiris Pena
2:31.175Jose Osiris Pena
132.4Jose Osiris Pena
43.329Jose Osiris Pena
57.734Jose Osiris Pena
29.338Jose Osiris Pena
20.307Jose Osiris Pena
Acura Integra
STL
1
2:31.209Mike Taylor
2:31.688Mike Taylor
2:31.209Mike Taylor
134.8Mike Taylor
43.600Mike Taylor
57.564Mike Taylor
29.241Mike Taylor
20.584Mike Taylor
Mazda Miata
STL
19
2:31.270Nick Leverone
2:32.482Nick Leverone
2:31.270Nick Leverone
132.4Nick Leverone
43.465Nick Leverone
57.718Nick Leverone
29.266Nick Leverone
20.491Nick Leverone
Honda CRX Si
STL
1
2:32.024Joe Moser
2:32.024Joe Moser
2:32.115Joe Moser
131.0Joe Moser
Honda Prelude
STL
3
2:32.977Max Gee
2:32.977Max Gee
2:33.132Max Gee
132.0John Schmitt
44.294John Schmitt
1:00.822Carl Young
30.556John Schmitt
20.682John Schmitt
Honda Civic Si
STL
5
2:33.393Darin Treakle
2:34.492Darin Treakle
2:33.393Darin Treakle
132.9Darin Treakle
46.277Sean Duncan
1:00.779Sean Duncan
31.089Sean Duncan
21.748Sean Duncan
Honda Civic Si
STL
3
2:33.393Darin Treakle
2:34.492Darin Treakle
2:33.393Darin Treakle
132.9Darin Treakle
Honda Civic VX
STL
1
2:38.848Sean Duncan
2:38.848Sean Duncan
2:40.132Sean Duncan
126.6Sean Duncan
46.277Sean Duncan
1:00.779Sean Duncan
31.089Sean Duncan
21.748Sean Duncan
Honda Civic EX
STL
1
2:52.826Michael Olivier
2:53.492Michael Olivier
2:52.826Michael Olivier
113.7Michael Olivier
Acura Integra Type R
STL
2
2:34.072Jon Sewell
2:34.265Jon Sewell
2:34.072Jon Sewell
133.3Jon Sewell
44.058Jon Sewell
59.122Jon Sewell
29.816Jon Sewell
20.730Jon Sewell
Honda S2000
STL
1
2:35.418Gonzalo Aponte
2:35.426Gonzalo Aponte
2:35.418Gonzalo Aponte
127.6Gonzalo Aponte
44.335Gonzalo Aponte
58.809Gonzalo Aponte
30.136Gonzalo Aponte
20.922Gonzalo Aponte
Acura Integra GSR
STL
2
2:35.462Zsolt Ferenczy
2:35.462Zsolt Ferenczy
2:36.215Spencer Clark
132.0Zsolt Ferenczy
44.413Zsolt Ferenczy
59.381Zsolt Ferenczy
30.082Zsolt Ferenczy
20.927Zsolt Ferenczy
Toyota Celica
STL
1
2:35.997Marcos Vento
2:35.997Marcos Vento
2:37.210Marcos Vento
128.8Marcos Vento
Honda Civic CX Hatch
STL
1
2:36.678Tom van Veen
2:36.678Tom van Veen
2:36.780Tom van Veen
127.4Tom van Veen
Ford Focus SVT
STL
1
2:39.388Maxwell Kittleson
2:40.791Maxwell Kittleson
2:39.388Maxwell Kittleson
125.1Maxwell Kittleson
46.170Maxwell Kittleson
1:00.382Maxwell Kittleson
31.024Maxwell Kittleson
21.703Maxwell Kittleson
Mazda RX-8
STL
1
2:39.683Kristina Etherington
2:41.628Kristina Etherington
2:39.683Kristina Etherington
128.4Kristina Etherington
Mazda RX-7
STL
2
2:41.673Rob Garrison
2:49.402Dan Harding
2:47.462Dan Harding
129.3Rob Garrison
45.940Rob Garrison
1:01.750Rob Garrison
31.515Rob Garrison
21.631Rob Garrison
Pontiac Solstice
STL
1
2:46.902Tim DeRonne
2:49.529Tim DeRonne
2:46.902Tim DeRonne
119.0Tim DeRonne
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
STL Request clarification on wing measurement
#29640 from Jose De Miguel · Rule change · TB 20-12 (2020-12 Fastrack)
neutralST aero devices and reference areas now include end plates but exclude fasteners protruding over 1/2 inch.
IN ST, GCR Section 9.1.4.D.4.e, add the following: "Unless otherwise specified in the applicable rules the measurement of aero dynamic devices and reference areas shall include end plates but not include fasteners as long as the fasteners serve no other purpose. Fasteners may protrude no more than 1/2” from the mounting surface."
STL Request for FWD and RWD Parity
#29728 from Tom Fowler · Rule change · TB 21-01 (2021-01 Fastrack)
fasterSTL RWD strut suspension weight penalty cut to 0.5%, other RWD cut to 2.5%.
In STL, GCR Section 9.1.4.2.H.2, change as follows: "Rear wheel drive cars with strut front suspension must add 3 0.5 percent to their baseline STL weight. All other rear wheel drive cars must add 5.5 2.5 percent to their standard baseline STL weight."
STL Request to Remove Honda F20C 2% Weight Penalty
#29815 from David Mead · Rule change · TB 21-01 (2021-01 Fastrack)
fasterSTL Honda F20C loses 2% weight penalty, minimum weight reduced by approximately 35 lbs.
In STL Spec Lines, Honda F20C, change Minimum Weight as follows: "Chart + 2%"
STL Request for FWD and RWD Parity
#30023 from Club Racing Board · Rule change · TB 21-01 (2021-01 Fastrack)
slowerSTL Honda B16/B17/B18C1 restrictor tightened to 53mm; B18C variants and Mazda MZR to 52mm.
In STL, Table A, Acura/Honda B16, change Notes as follows: "54 53mm flat plate restrictor required." In STL, Table A, Acura/Honda B17, change Notes as follows: "54 53mm flat plate restrictor required." In STL, Table A, Acura/Honda B18C1, change Notes as follows: "54 53mm flat plate restrictor required." In STL, Table A, Acura/Honda B18C (JDM Type R), B18C5 (USDM Type R), B18C6 (UK and Euro Type R), B18C7 (Australia Type R), change Notes as follows:
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"53 52mm flat plate restrictor required." In STL, Table A, Mazda MZR, change Notes as follows: "53 52mm flat plate restrictor required."
STL Brake Component Relocation
#29990 from Christopher Childs · Rule change · TB 21-02 (2021-02 Fastrack)
neutralST cars may relocate ABS actuation hardware and wiring anywhere in engine compartment.
In ST, Section 9.1.4.N.1., add the following: "ABS actuation hardware and wiring may be relocated anywhere within the engine compartment."
neutralSTL rear wing trailing edge, including end plates and gurney flap, maximum rearward mounting clarified to center of rearmost bodywork.
In GCR, Section 9.1.4.D.g, change as follows: "The trailing edge of the rear wing, including end plates and gurney flap, may be mounted no further rearward than the center of the rearmost part approved bodywork."
STL Transmission Options
#30118 from John Warren · Rule change · TB 21-02 (2021-02 Fastrack)
neutralSTL allows OEM gear sets from same manufacturer transmissions with input shaft modifications for fitment.
In STL, Section 9.4.1.2.C.2, change as follows: "Either the original transmission or an alternate transmission must be used; the alternate transmission must be from the same manufacturer as the vehicle (i.e., an Acura transmission may be installed in a Honda car). Alternate transmissions must be used in their entirety; any OEM gear sets (drive and driven gear pairs) that fit w/o any modifications to gears, shafts, and/or case are permitted. Modifications to input shafts for fitment are allowed."
STL GM Ecotec engines in STL
#30247 from Tim DeRonne · Rule change · TB 21-03 (2021-03 Fastrack)
neutralSTL GM Ecotec engines now permit any combination within the family, must use 55mm flat plate restrictor.
In STL, Table B, change GM Ecotech LNF, as follows: "GM Ecotech LNF" In STL, Table B, GM Ecotech LNF, add to Notes as follows: "Any combination of GM Ecotech engine family permitted. Must use 55mm flat plate restrictor. Must meet all other STL specifications."
STL Super Touring Alternate Miata Hubs
#30345 from Club Racing Board · Rule change · TB 21-03 (2021-03 Fastrack)
neutralSTL/STU 90-05 Mazda Miata gains approval for Mazda Motorsports Development alternate front wheel hubs.
In ST, GCR section 9.1.4.M, add alternate front wheel hubs as follows: "18. Allow alternate front wheel front hubs for the 90-05 Mazda Miata: Mazda Motorsports Development Part #0000-04-5HUB-S1"
STL ST Oil Coolers E&O Correction to 9.1.4.2.H
#30388 from Philip Royle · Rule change · TB 21-04 (2021-04 Fastrack)
neutralST oil coolers and filters now explicitly allowed to be added or substituted; wording clarifies existing permissions.
In ST, section 9.1.4.G.14, change as follows: "Vents, breathers, and oil filters and oil coolers may be added, or substituted. All emission control devices may be removed and the resulting holes plugged."
STL Solstice Ride Height
#30183 from Tim DeRonne · Rule change · TB 21-05 (2021-05 Fastrack)
neutralSTL Mazda B5 DOHC added to classification with standard STL regulations.
In STL Table A, classify Mazda B5 DOHC as follows: STL Maximum Displacement (cc's) Minimum Weight Notes Mazda B5 DOHC Chart Must meet ALL STL regulations.
STL Honda B16A (JDM) Restrictor change
#30531 from Club Racing Board · Rule change · TB 21-05 (2021-05 Fastrack)
slowerSTL Honda B16A JDM restrictor reduced from 54mm to 53mm.
In STL Table B, Honda B16A (JDM), change notes as follows: "54 53mm"
STL VW Engine Request
#30625 from PABLO GASTALDI · Rule change · TB 21-06 (2021-06 Fastrack)
slowerSTL Volkswagen 2.0L TFSI 1984cc classified with turbocharger removal required, meeting all other STL specs.
In STL Spec Lines, classify Volkswagen 2.0L TFSI, as follows: STL Maximum Displacement (cc's) Minimum Weight Notes Volkswagen 2.0 TFSI 1984 Chart Engine Permitted with turbocharger removed. Must meet all other STL specifications.
neutralSTL Spec MX-5 removes redundant specification line; no performance change.
In STL, Mazda Spec MX-5, remove redundant spec line as follows: "Mazda Spec MX-5. 2000cc. 2600lbs. Must Comply with 2014 SCCA Spec MX-5 Regulations."
STL Throttling Device Clarification
#31323 from Jose de Miguel · Rule change · TB 22-01 (2022-01 Fastrack)
neutralSTL and STU piston engines clarified: intake manifold and cylinder head porting remains free.
In GCR, Section 9.1.4.1.B.4., change as follows: "The intake and exhaust porting on piston engines is free. Porting of intake manifolds and cylinder heads is free on piston engines."
STL Mazda Renesis Restriction
#31467 from Christopher Childs · Rule change · TB 22-01 (2022-01 Fastrack)
fasterSTL Mazda Renesis flat plate restrictor increases from 55mm to 60mm.
In STL Spec Lines, Mazda Renesis, change Notes as follows: "55 60mm flat plate restrictor required."
STL Clarification of 79-85 RX7 Spec line
#31621 from Daniel Sheppard · Rule change · TB 22-01 (2022-01 Fastrack)
neutralSTL Mazda RX-7 12A 79-85 clarifies carburetor, emissions, and water jacket modification rules.
In STL, Mazda RX-7 12A (79-85), change notes as follows: "Stock Nikki 4 bbl carburetor on a stock manifold only. Allow the standard removal of emissions related components, and allow air and fuel jets to be corrected. Modification of the water jacket in the area of the spark plug for cooling purposes is permitted."
STL Single TB Weight Modifiers
#31449 from John Weisberg · Rule change · TB 22-03 (2022-03 Fastrack)
fasterSTU normally aspirated engines: minimum weights reduced up to 310 lbs; single throttle body weight reduction removed.
Effective 5.1.2022 In STU, GCR Section 9.1.4.H.1., change as follows: "1. Minimum weights for cars with normally aspirated piston engines will be determined by 1.1 lbs/cc displacement for the installed engine (see following table) the following table. Displacement is the stock displacement for the installed engine. For the purpose of weight assignment, engine displacement will be rounded to the nearest 50cc (e.g., 2176cc = 2200cc and 2175cc = 2150cc)." Factory Engine Displacement (cc) Minimum Weight (lbs)
A specification table follows in the original; it is not shown here.
neutralSTL and STU Improved Touring vehicles must conform to 9.1.4 Tires & Wheels requirements.
In STU Table B, Improved Touring Vehicles (1985-), change Notes as follows: "Must completely conform to ITCS requirements. Tires must conform to 9.1.4, Tires & Wheels" In STL Table B, ITA-spec and ITS-spec RX7, change Notes as follows: "Must completely conform to ITCS requirements. Tires must conform to 9.1.4, Tires & Wheels" In STL Table B, ITS, ITA, ITB, or ITC vehicles (1985- ), change Notes as follows: "Must completely conform to ITCS requirements. Tires must conform to 9.1.4, Tires & Wheels"
STL Spec MX5 in STL
#33473 from Tom Bogar · Rule change · TB 23-01 (2023-01 Fastrack)
neutralSTL Spec MX5 clutch, wheels, and tyres specified: ACT 0000-02-5004-G6, 17x8 wheels, Toyo RR and RA1 235-40-17.
In STL, Table B: Alternate Vehicle and Engine Allowances, Mazda Spec MX5 Challenge, change notes as follows: "ACT clutch 0000-02-5004-G6, wheels 17x8 #0000-04-5706-GM, # 0000-04- 5706-SL, and Toyo RR 235-40-17 dry, Toyo RA1 235- 40-17 wet. Alternative tires on 17x7 wheels per STL rules. No other Super Touring modifications or allowances permitted except as noted in this spec line."
neutralSTL ITA/ITS RX7 and 1985+ ITA/ITS/ITB/ITC vehicles clarified to conform to section 9.1.4.2 tire specifications.
In STL Spec Lines, Table B: Alternate Vehicle and Engine Allowances, change Notes as follows: ITA-spec and ITS-spec RX7: "Must completely conform to ITCS specifications. Tires must conform to 9.1.4, Tires & Wheels. Tires must also conform to 9.1.4.2.Tires." ITS, ITA, ITB, or ITC vehicles (1985- ): "Must completely conform to ITCS specifications. Tires must conform to 9.1.4, Tires & Wheels. Tires must also conform to 9.1.4.2.Tires."
STL Alternate Carburetor Request for 79-85 RX7 12a
#35181 from Dan Sheppard · Rule change · TB 24-01 (2024-01 Fastrack)
unclearSTL Mazda RX-7 12A (79-85) now allows auto-type 2 bbl with 42mm choke(s) on dual-y manifold as alternate to stock Nikki 4 bbl.
In STL Table B: Alternate Vehicle and Engine Allowances, Mazda RX-7 12A (79-85), change Notes as follows: "Street Porting of the engine only. Bridge porting, peripheral porting, and eyelash porting are prohibited. Contact SCCA National Office for details of Street porting. Stock Nikki 4 bbl carburetor on a stock manifold only. or auto-type 2 bbl w/42mm choke(s) on a “dual-y” manifold. Allow the standard removal of emissions related components, and allow air and fuel jets to be corrected. Modification of the water jacket in the area of the spark plug for cooling purposes is permitted."
STL ST Electric-Assisted Steering Systems
#35066 from Jose Osiris Pena · Rule change · TB 24-02 (2024-01 Fastrack)
neutralSTL and STU power steering rules clarified to permit electric-assisted and hydraulic-assisted steering systems.
In GCR, Section 9.1.4.M.16., change as follows: "Power steering may be modified in any of the following ways: a. disconnected , pump, belt, pulley, and hoses may be removed. Hoses may also be looped. Steering rack or box may be modified internally to work without pump. b. an OEM manual steering rack for that model may be fitted c. an electric power steering pump may be fitted d. an OEM electric-assisted steering system may be used or any column mounted electric steering assist may be used e. an OEM hydraulic-assisted steering system may be used"
STL BOP Adjustments
#35112 from Super Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)
fasterSTL Acura/Honda B-series and Mazda MZR restrictors reduced 2mm; minimum weights down 25–75 lbs for 1900–2000cc engines.
In GCR, 9.1.4.H.1., change as follows: "Minimum weights for cars with normally aspirated piston engines will be determined by 1.35 lbs/cc displacement for the installed engine (see the following table). Displacement is the factory displacement for the installed engine. For the purpose of weight assignment, engine displacement will be rounded to the nearest 50cc (e.g., 2176cc = 2200cc and 2175cc = 2150cc)." In GCR, 9.1.4.H.1., change Minimum Weight on Chart as follows: Factory Engine Displacement 1900: "Effective 3-1-24: 2565 2540" Factory Engine Displacement 1950: "Effective 3-1-24: 2633 2583"
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Factory Engine Displacement 2000: "Effective 3-1-24: 2700 2625" In GCR, 9.1.4.H.3., change as follows: "Front wheel drive cars with a strut type front suspension may reduce their minimum weight by 2.5 percent. Effective 3- 1-24: Front wheel drive cars with 95" or less wheelbase must add 1.25% to their minimum weight." In STL Spec Lines, change Notes as follows: Acura/Honda B16: "Effective 3-1-24: 53 51mm" Acura/Honda B17: "Effective 3-1-24: 53 51mm" Acura/Honda B18C1: "Effective 3-1-24: 53 51mm" Acura/Honda B18C (JDM Type R), B18C5 (USDM Type R), B18C6 (UK and Euro Type R), B18C7 (Australia Type R): "Effective 3-1-24:52 50mm" Mazda MZR: "Effective 3-1-24: 52 50mm"
STL Mazda 12A
#35320 from Super Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)
slowerSTL Mazda 12A must keep 5th and 6th intake port actuators and valves, no longer allowed removal or disabling.
In STL Spec Lines, Table A, Mazda 12A, change Notes as follows: "The 5th and 6th intake port actuators and valves may be removed or disabled."
Runoffs 2024 → Runoffs 2025 2024-10-01 to 2025-09-29
STL Request to Remove Miata Hubs from General category
#37138 from Christopher Childs · Rule change · TB 24-12 (2024-12 Fastrack)
neutralSTL/STU: 90-05 Mazda Miata alternate front wheel hubs moved from General to specific part approval.
In GCR, Section 9.1.4.M.18., change as follows: "18. Allow alternate front wheel front hubs, Mazda Motorsports Development Part #0000-04-5HUB-S1, for the 90-05 Mazda Miata: Mazda Motorsports Development Part #0000-04-5HUB-S1."
unclearSTL Mazda MX5 Challenge minimum weight now references GCR 9.1.7.1 instead of 2500 lbs; spec components removed, only alternative tires allowed.
In STL Spec Lines, Table B, Mazda Spec MX5 Challenge, change as follows: Minimum Weight: "2500 See 9.1.7.1." Notes: "Mazda MX5 Challenge car must utilize the following components: Roush CNC cylinder head 0000-01-5300,Mahle standard or +0.005 0000-01-5310, OEM camshaft, 11:1 compression ratio, header 0000-06-5407-NC, exhaust 0000-06-5427-NC, cold air intake 0000- 06-5150-KT, ECU flash 0000-01-5379, Pagid front brake pads 0000-03-5104-SP or endurance pads 0000-03- 5104-EN, Pagid rear brake pads 0000-03-5114-SP or endurance pads 0000-03-5114-EN, Penske front shock 0000-04-5291-SA, Penske rear shock 0000-04-5292-SA, Penske rear mount kit 0000-04-5358, Front mount kit 0000-04-5359, Front offset bushing 0000-04-5407-NC, Eibach front springs 0000-04-9700-08, Eibach rear springs 0000-04-9400-07, Eibach helper springs 0000-04-
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9926, Eibach front sway bar 0000-04-5306-FT, Eibach rear sway bar 0000-04-5306-RR, Interior finish panels 0000-07-5822, C&R radiator/oil cooler assembly 0000-01-5504-CR, Oil cooler adapter and lines 0000-01-5511-KT, ACT clutch 0000-02-5004-G6, wheels 17x8 #0000-04-5706-GM, # 0000- 04-5706-SL, and Toyo RR 235-40-17 dry, Toyo RA1 235-40-17 wet. Alternative tires on 17x7 wheels per STL rules. No other Super Touring modifications or allowances permitted except as noted in this spec line. Must conform completely to GCR 9.1.7.1, except alternative tires (only) per STL regs allowed."
Applies to Mazda MX-5 on this page: Danny Steyn, Chuck Hines, Craig McHaffie, David Palfenier, Austin Hill, Richard Astacio, Jaden Lander, Whitfield Gregg, Deacon Greenfield
STL Lotus Weight Reduction
#38772 from Club Racing Board · Rule change · TB 25-08 (2025-08 Fastrack)
fasterSTL/STU Lotus weight reduced: Evora GT4 to 2700 lbs, Elise Cup R to 2250 lbs, Elise/Exige SC to 2450-2550 lbs.
In 9.1.2. GT2/ST Spec Lines, Lotus Evora GT4, change Weight as follows: "2750 2700" In STU Table B: Alternate Vehicle and Engine Allowances, change Weight as follows: Lotus Elise Cup R: "2300 2250" Lotus Elise SC/ Lotus Exige SC: "2300 2550 2500 2450"
Runoffs 2025 → Runoffs 2026 2025-09-29 to 2026-09-28
STL Weight adjustment for STL
#39579 from Super Touring Committee · Rule change · TB 26-01 (2026-01 Fastrack)
slowerSTL minimum weights increase across all classes, 1300 cc gains 195 lbs to 1950, up to 1850 cc at 2500.
In GCR, Section 9.1.4.2.H.1. change Minimum Weight on chart as follows:
A specification table follows in the original; it is not shown here.
In STL, Table A: Alternate Vehicle and Engine Requirements, add the following: Model: "Mazda BP 1.6" Maximum Displacement: "1600cc" Minimum Weight: "2160"
STL Calculating Weight
#40224 from David Wessel · Rule change · TB 26-06 (2026-06 Fastrack)
neutralSTL and STU weight calculation wording clarified; percentage adjustments combined before applying fixed weight adjustments.
In GCR, Section 9.1.4.1.H.6., change as follows: "The minimum weight is determined by the installed engine displacement, TIR or table spec line. It is to be used as the base weight for any chassis weight related adjustments. Chassis related All positive adjustments that are percentage based are performed by adding the total of all specified percentages first and subtracting the total of all negative specified percentages second if necessar y. Final step is addition or subtraction of specified weight in pounds." In GCR, Section 9.1.4.2.H.4., change as follows: "The minimum weight is determined by the installed engine displacement or table spec line. It is to be used as the base weight for any chassis weight related adjustments. Chassis related All positive adjustments that are percentage based are performed by
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adding the total of all specified percentages first and subtracting the total of all negative specified percentages second if necessary. Final step is addition or subtraction of specified weight in pounds."
STL Spec Line Clean Up
#40344 from Josh Smith · Rule change · TB 26-07 (2026-07 Fastrack)
neutralSTL removes Mazda MX-5 Cup entirely; renames Spec MX5 Challenge and Global Cup (16-18), updates notes.
In STL Spec Lines, removed Mazda MX-5 Cup in its entirety. In STL Spec Lines, Mazda Spec MX5 Challenge, change as follows: Model: "Mazda Spec MX5 Challenge" Notes: "Must conform completely to GCR 9.1.7.1, except alternative tires (only) per STL regs allowed. May run 8" spec wheel. Tires per STL rules." In STL Spec Lines, Mazda MX-5 Global Cup (16-18), change as follows: Model: Mazda MX-5 Global Cup (16-18) Notes: "Must meet all MX-5 Global Cup rules."
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In STL Spec Lines, remove Mazda MX-5 Global Cup (2019) in its entirety.
Applies to Mazda MX-5 on this page: Danny Steyn, Chuck Hines, Craig McHaffie, David Palfenier, Austin Hill, Richard Astacio, Jaden Lander, Whitfield Gregg, Deacon Greenfield
What the rules allowed changed as listed; this does not say what any particular car ran.