BoP Lab / Road America
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 June Sprints 2026 only. June Sprints 2025 (sectors cut at different points) counts towards whole-lap times and trap speed only.
46 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.
| Pos | Car | Driver | Class | # | Lap | Theoretical | Qual | Race | 5-lap stint | Consistency | Trap | S1 | S2 | S3 | S4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | BMW M4 | Roy Lipner | T1 | 175 | 2:22.443 B-Q2 | 2:21.967 | 2:22.443 B-Q2 | 2:22.894 B-R1 | 2:26.374 B-R2 | +3.036 B-R2 | 152.5 B-R1 | 39.997 B-R1 | 55.584 B-Q2 | 27.646 B-Q2 | 18.740 B-Q2 |
| 2 | Ford Mustang | David Marshall | T1 | 02 | 2:24.521 B-Q2 | 2:23.862 | 2:24.521 B-Q2 | 2:48.629 D-R1 | 2:51.828 D-R1 | +15.613 D-R1 | 151.4 B-Q1 | 40.265 B-Q2 | 56.453 B-Q2 | 28.329 B-Q1 | 18.815 B-Q2 |
| 3 | BMW M3 | David Swernoff | T1 | 118 | 2:25.112 B-R2 | 2:24.450 | 2:25.736 B-Q2 | 2:25.112 B-R2 | 2:53.893 B-R1 | +4.222 B-R1 | 150.6 B-Q1 | 40.745 B-Q2 | 56.483 B-R2 | 28.342 B-Q2 | 18.880 B-Q2 |
| 4 | Porsche Cayman GT4 RS Clubsport | Richard Grant | T1 | 30 | 2:28.298 B-Q2 | 2:26.482 | 2:28.298 B-Q2 | 2:29.013 B-R2 | 2:31.979 B-R2 | +5.626 B-R2 | 155.1 B-Q2 | 40.492 B-Q2 | 58.036 B-Q2 | 29.407 B-Q2 | 18.547 B-Q2 |
| 5 | BMW M3 | Brian Goodman >115% | T1 | 48 | 2:49.489 D-R1 | 2:49.489 D-R1 | 2:51.890 D-R1 | +15.315 D-R1 | 132.6 D-R1 |
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 are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.
| Car | Class | Drivers | Lap | Qual | Race | Trap | S1 | S2 | S3 | S4 |
|---|---|---|---|---|---|---|---|---|---|---|
| BMW M4 | T1 | 1 | 2:22.443Roy Lipner | 2:22.443Roy Lipner | 2:22.894Roy Lipner | 152.5Roy Lipner | 39.997Roy Lipner | 55.584Roy Lipner | 27.646Roy Lipner | 18.740Roy Lipner |
| Ford Mustang | T1 | 1 | 2:24.521David Marshall | 2:24.521David Marshall | 2:48.629David Marshall | 151.4David Marshall | 40.265David Marshall | 56.453David Marshall | 28.329David Marshall | 18.815David Marshall |
| BMW M3 | T1 | 2 | 2:25.112David Swernoff | 2:25.736David Swernoff | 2:25.112David Swernoff | 150.6David Swernoff | 40.745David Swernoff | 56.483David Swernoff | 28.342David Swernoff | 18.880David Swernoff |
| Porsche Cayman GT4 RS Clubsport | T1 | 1 | 2:28.298Richard Grant | 2:28.298Richard Grant | 2:29.013Richard Grant | 155.1Richard Grant | 40.492Richard Grant | 58.036Richard Grant | 29.407Richard Grant | 18.547Richard Grant |
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.
#39344 from David Mead · Rule change · TB 25-12 (2025-12 Fastrack)
unclearUnable to summarize: letter states intent but provides no actual rule changes to S2000 specification.In T1 Spec Lines, Honda S2000, change as follows:
#39394 from Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)
In T1-GT4 Spec Lines, change as follows:
A specification table follows in the original; it is not shown here.
#39406 from Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)
fasterT1 non-GT4 cars: multiple restrictors enlarged (70mm to 73mm, 75mm to 78mm, 55mm to 60mm, 61mm to 70mm); one weight increased to 3600.In T1 Spec Lines, change as follows:
Spec Line # 1134
Required Restrictor: "61mm 70mm - Flat Plate"
Spec Line # 1140
Required Restrictor: "72mm - Flat Plate"
Spec Line # "1175"
Maximum Displ.: "L76 5967cc OEM"
Minimum Weight: "3250"
Required Restrictor: "80mm"
Engine Notes: "An L76 is an LS2 block with LS3 intake manifold and heads. All parts must be OEM. May resleeve to stock
parameters for engine repair."
Spec Line # 1180
Required Restrictor: "75mm 78mm - Flat Plate"
Spec Line # 1190
Required Restrictor: "70mm 73mm - Flat Plate"
Spec Line # 1200
Required Restrictor: "72mm 78mm - Flat Plate"
Spec Line # 1201
Required Restrictor: "70mm 73mm - Flat Plate"
Spec Line # 1210
Required Restrictor: "72mm - Flat Plate"
Spec Line # 1350
Required Restrictor: "(2) 55mm 60mm flat plate"
Spec Line # 1370
Required Restrictor: "(2) 55mm 60mm flat plate"
Spec Line # 1390
Required Restrictor: "(2) 55mm 60mm flat plate"
Spec Line # 1420 "*Spec line Expires 12/23"
Required Restrictor: "52mm FPR"
Spec Line # 1429
Required Restrictor: "75mm - FPR"
Spec Line # 1460
Weight: "3500 3600"
Required Restrictor: "70mm - FPR"
Spec Line # 1480
Required Restrictor: "80mm FPR"
Spec Line # 1490
Required Restrictor: "75mm - FPR"
Spec Line # 1590
Engine Notes: "90mm Throttle Body Permitted"
Spec Line # 1595
Required Restrictor: "72mm – FPR"
Spec Line # 1596
Required Restrictor: "61mm 70mm – FPR"
Spec Line # 4120
Required Restrictor: "75mm flat plate"
#39407 from Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)
neutralT1 BMW M3 E92 (08-13) Spec Line 1090 removed entirely.In T1 Spec Lines, BMW M3 E92 (08-13) Spec Line number 1090, delete Spec Line in its entirety.
#39520 from Touring Committee · Rule change · TB 26-01 (2026-01 Fastrack)
unclearT1 Spec Line restrictor changes from 70mm flat plate to unspecified new specification.In T1 Spec Line, Spec line # 1132, change Restrictor as follows:
"70mm - Flat Plate"
#39716 from Danny Kellermeyerhttps://crbscca.com/secu · Rule change · TB 26-02 (2026-02 Fastrack)
neutralT1 Corvette C6 LS1/LS6 Spec Line reinstated: 3200 lbs minimum weight, 70mm restrictor required.In T1 Spec Lines, reinstate Spec Line # 1139, Chevrolet Corvette C6 (05-13) Includes Z51, GrandSport, Z06, Z06 Carbon, as
follows:
Max Displ: "LS1, LS6 OEM"
Min Weight: "3200"
Required Restrictor: "70mm"
#39542 from Roy Lipner · Rule change · TB 26-03 (2026-03 Fastrack)
neutralT1 GT4 Spec Line 4030- now allows Wagner Tuning #200001124 aftermarket intercooler.In T1 GT4 Spec Lines, Spec Line 4030-, add to Chassis Notes the following:
"Wagner Tuning # 200001124 Intercooler allowed."
#39922 from Danny Kellermeyer · Rule change · TB 26-04 (2026-04 Fastrack)
unclearT1 restrictor changes from 70mm to unspecified dimension; change request text incomplete.In T1 Spec Lines, Spec line 1139, change Required Restrictor as follows:
"70mm"
#39924 from Danny Kellermeyer · Rule change · TB 26-05 (2026-05 Fastrack)
fasterT1 LS1, LS6 removes OEM designation; 70mm restrictor requirement deleted.In T1 Spec Lines # 1139, change as follows:
Max Displ: "LS1, LS6 OEM
Restrictor Required: "70mm"
#39958 from Joe Aquilante · Rule change · TB 26-05 (2026-05 Fastrack)
neutralT1 Spec Line Coyote Boss 302 maximum displacement year range corrected to 11-14 from 11-17.In T1 Spec Line, Spec Lines # 1430, change Maximum Displ as follows:
"Coyote, Boss 302 (11-17 14) 4957"
#40177 from James Candelaria · Rule change · TB 26-06 (2026-06 Fastrack)
neutralT1 trunk lid and wing mounting wording clarified for heat vents, cooler ducts, and bracket reinforcement.In GCR, Section 9.1.9.1.A.1., change as follows:
"Hoods, trunk lids, rear hatch and front fenders may be replaced with panels of any type material, provided that the panel
maintains the OEM profiles. For the sole purpose of tire fitment, wheel arches may be flared up to 3” and must maintain the
OEM profile. The hood may have heat exhaust vents installed in it. Hood inlets (scoops) are not allowed. The vents shall not
expose the mechanical components of the car when looking down from above. The permitted transmission and differential
coolers may vent through rear license plate frame. There shall be a screen, painted the same color as the surrounding bodywork,
covering the vent opening. Any OEM non-functional, decorative vents/ ducts may be made to be functional provided the
exterior body appearance is not modified."
In GCR, Section 9.1.9.1.B.2.a., change as follows:
"The wing shall be mounted to the trunk/deck lid, rear hatch or bumper frame with 2 mounting brackets. Each mounting bracket
shall attach to the wing at a point that is at least 2.0 inches inboard of endplates. The wing, and the portion of the mounting
brackets located externally to the trunk/ deck lid, may only be reinforced by a diagonal strut having no aerodynamic effect,
and/or by affixing the external parts of the brackets to internal parts of the brackets within the trunk/cargo area. The internal
parts of the brackets may protrude through the trunk/deck lid to allow the two parts of each bracket to be fastened together."
What the rules allowed changed as listed; this does not say what any particular car ran.