BoP Lab / Buttonwillow Raceway Park

FE + F5 + STL at Buttonwillow Raceway Park

No mapCal Club 2024, Cal Club 2023

This track has been raced on 4 configurations (The Circuit, 2.57 mi; 19, 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.

FE has no laps in the events chosen. It ran at Super Tour Apr 2019, Super Tour Apr 2018, Super Tour Apr 2017: add those events.

F5 has no laps in the events chosen. It ran at Super Tour Apr 2017: add that event.

One session is left out because the timing does not look like full laps: Cal Club 2023 Qualifying #2.

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	Mazda MX-5	Jared Korth	STL	27	1:51.665 B-P	1:51.645		1:58.002 A-R2	1:58.825 A-R2	+1.245 A-R2	134.8 A-R1, A-R2	30.616 B-P	32.218 B-P	48.811 B-P
2	Mazda Miata	Wesley Mollno	STL	11, 111	1:52.983 B-P	1:52.983	1:59.582 A-Q1	1:59.163 A-R1	1:59.870 B-R2	+0.510 B-R2	133.4 A-Q1	30.838 B-P	33.020 B-P	49.197 B-P
3	Mazda Miata	Jon Davies	STL	67	1:53.071 B-P	1:53.071	1:59.281 B-Q1	1:59.121 B-R1	1:59.683 B-R1	+1.145 B-R1	127.3 B-P	30.815 B-P	32.820 B-P	49.536 B-P
4	Mazda RX-8	David LeCren	STL	2	1:53.515 B-P	1:53.253	2:09.464 A-Q2	2:11.372 A-R2	2:11.978 A-R2	+5.025 A-R2	121.0 A-Q2	31.217 B-P	32.486 B-P	49.550 B-P
5	Mazda Miata	Sayo Haraishi	STL	34	1:54.120 B-P	1:54.019	2:08.265 B-Q1	2:09.190 B-R1	2:09.557 B-R1	+0.759 B-R1	105.6 B-P	31.129 B-P	33.359 B-P	49.531 B-P
6	Mazda MX-5	Ricardo Arruda	STL	16	1:54.343 B-P	1:54.343	2:00.717 B-Q2	2:01.410 B-R1	2:02.207 B-R1	+0.929 B-R1	104.3 B-P	31.248 B-P	32.888 B-P	50.207 B-P
7	Mazda MX-5	Gavin Wardle	STL	169	1:54.845 A-R1	sector data unreliable	1:58.292 A-Q2	1:54.845 A-R1	1:59.598 A-R2	+0.868 A-R2	132.7 A-R2	8.264	33.984	51.822
8	Mazda Miata	Nick Leverone	STL	137, 37	1:54.963 B-Q2	1:54.891	1:54.963 B-Q2	1:55.682 B-R1	1:56.512 B-R1	+1.038 B-R1	106.0 B-Q1	31.458 B-Q2	32.979 B-Q2	50.454 B-Q2
9	Honda Civic Si	Jonathan Lugod	STL	61	1:56.438 B-R1	1:56.128	1:57.331 B-Q2	1:56.438 B-R1	1:57.403 B-R1	+1.528 B-R1	106.8 B-P	31.787 B-P	33.468 B-P	50.873 B-P
10	Honda Prelude	Carl Young	STL	23	1:56.961 B-R1	1:56.631	1:57.917 B-Q2	1:56.961 B-R1	1:57.759 B-R1	+1.599 B-R1	104.5 B-Q2	31.994 B-R1	33.745 B-R1	50.892 B-R1
11	Mazda MX-5	Ryan Gutile	STL	116	1:57.404 B-Q1	1:57.004	1:57.404 B-Q1	1:57.483 B-R1	1:58.542 B-R1	+1.371 B-R1	128.4 A-Q2	31.829 B-R1	33.695 B-Q1	51.480 B-R1
12	Mazda Miata	Amy Mills	STL	114	1:57.757 A-Q2	1:57.494	1:57.757 A-Q2	1:58.239 B-R2	1:58.840 B-R2	+1.462 B-R2	122.6 A-R2	32.321 B-Q2	33.780 A-Q2	51.393 A-Q2
13	Mazda MX-5	Bryce Johnson	STL	15, 13	1:58.716 A-Q2	1:58.419	1:58.716 A-Q2	1:59.496 A-R2	1:59.874 A-R2	+0.878 A-R2	136.6 A-Q1	32.248 A-Q1	34.104 A-Q2	52.067 A-Q2
14	Mazda Miata	Patrick Drinkwine	STL	151	1:59.239 B-Q1	1:58.754	1:59.239 B-Q1	2:00.132 B-R1	2:00.548 B-R1	+0.505 B-R1	106.6 B-P	32.503 B-P	34.167 B-P	52.084 B-P
15	Mazda MX-5 (2015)	Adrian Comstock	STL	25	2:00.239 A-Q2	2:00.015	2:00.239 A-Q2	2:00.722 A-R1	2:01.250 A-R2	+0.672 A-R2	133.0 A-R2	32.847 A-R2	34.493 A-Q2	52.675 A-Q2
16	Mazda MX-5	Andy Chittum	STL	99	2:00.296 A-Q2	1:59.684	2:00.296 A-Q2	2:00.787 A-R1	2:01.366 A-R1	+1.093 A-R1	132.9 A-R2	32.848 A-Q1	34.467 A-Q2	52.369 A-Q2
17	Mazda Miata	Richard James	STL	91	2:02.318 B-R1	2:01.786	2:02.441 A-Q1	2:02.318 B-R1	2:03.149 B-R2	+0.867 B-R2	126.7 A-R1	32.990 B-R1	35.132 A-Q1	53.664 B-R1
18	Mazda Miata	Todd Launchbaugh	STL	73	2:02.759 B-R1	2:02.624		2:02.759 B-R1	2:03.974 B-R1	+1.599 B-R1	98.5 B-R1	33.210 B-R1	35.059 B-R1	54.355 B-R1
19	Mazda Miata	Ayden Vaillancour	STL	88	2:03.022 B-R1	2:02.301	2:03.653 B-Q2	2:03.022 B-R1	2:03.841 B-R1	+0.936 B-R1	100.4 B-P	33.072 B-P	35.168 B-P	54.061 B-R1
20	Mazda Miata	Lauren Lewis >115%	STL	45	2:17.307 A-R1	2:16.162		2:17.307 A-R1	2:18.705 A-R1	+1.938 A-R1	108.6 A-R1	36.821 A-R1	39.026 A-R1	1:00.315 A-R2
21	Acura integra	Jack McEachern >115%	STL	21	2:24.310 B-Q2	2:22.511	2:24.310 B-Q2	2:24.550 B-R2	2:32.162 B-R1	+2.229 B-R1	77.6 B-Q1	38.960 B-Q1	41.141 B-Q2	1:02.410 B-R2

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 → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 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
Mazda Miata	STL	17	1:51.665Jared Korth	1:54.963Nick Leverone	1:54.845Gavin Wardle	136.6Bryce Johnson	8.264Gavin Wardle	32.218Jared Korth	48.811Jared Korth
Mazda MX-5	STL	6	1:51.665Jared Korth	1:57.404Ryan Gutile	1:54.845Gavin Wardle	136.6Bryce Johnson	8.264Gavin Wardle	32.218Jared Korth	48.811Jared Korth
Mazda Miata	STL	10	1:52.983Wesley Mollno	1:54.963Nick Leverone	1:55.682Nick Leverone	133.4Wesley Mollno	30.815Jon Davies	32.820Jon Davies	49.197Wesley Mollno
Mazda MX-5 (2015)	STL	1	2:00.239Adrian Comstock	2:00.239Adrian Comstock	2:00.722Adrian Comstock	133.0Adrian Comstock	32.847Adrian Comstock	34.493Adrian Comstock	52.675Adrian Comstock
Mazda RX-8	STL	1	1:53.515David LeCren	2:09.464David LeCren	2:11.372David LeCren	121.0David LeCren	31.217David LeCren	32.486David LeCren	49.550David LeCren
Honda Civic Si	STL	1	1:56.438Jonathan Lugod	1:57.331Jonathan Lugod	1:56.438Jonathan Lugod	106.8Jonathan Lugod	31.787Jonathan Lugod	33.468Jonathan Lugod	50.873Jonathan Lugod
Honda Prelude	STL	1	1:56.961Carl Young	1:57.917Carl Young	1:56.961Carl Young	104.5Carl Young	31.994Carl Young	33.745Carl Young	50.892Carl Young
Acura integra	STL	1	2:24.310Jack McEachern	2:24.310Jack McEachern	2:24.550Jack McEachern	77.6Jack McEachern	38.960Jack McEachern	41.141Jack McEachern	1:02.410Jack McEachern

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

Cal Club 2023 → Cal Club 2024 2023-02-24 to 2024-02-23

2023-04-01 FE Update FE SADEV Transmission Rule

#33883 from Robey Clark · Rule change · TB 23-04 (2023-04 Fastrack)

In FE, GCR section 9.1.1.I.2.G.b.4.b, change as follows:
"~~(All SADEV ratios are under review and could be updated prior to sealing date)~~"

2023-06-01 STL Clarify STL table B - IT spec notes on Tires

#34187 from Austin Hilliard · Rule change · TB 23-06 (2023-05 Fastrack)

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."

2024-01-01 FE Update FE Rain Light Rule

#34707 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)

In FE, GCR section 9.1.1.I.2.N.f, change as follows:
"~~Any rain light is allowed.~~ Effective 1/1/2024, a rain light that meets FIA Standard 8874-2019, Technical List No. 76, is required as
specified in GCR section 9.3.32.B.2."

2024-01-01 STL Alternate Carburetor Request for 79-85 RX7 12a

#35181 from Dan Sheppard · Rule change · TB 24-01 (2024-01 Fastrack)

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."

2024-01-01 FE FE/FE2 rule update

#35269 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)

In FE, GCR section 9.1.1.I.2.P.c, add the following:
"Racer's tape may be used to repair crash damage, or as a precautionary means of securing the body panels or
retaining l~~atches~~ fasteners only. Crash-damage is defined as having occurred during the current event, and the tape should be of
an appropriate color if possible. Taping of body seams is not allowed. Taping across heat exchanger openings as a way to control
temperature is allowed and may serve no other purpose."

2024-02-01 STL ST Electric-Assisted Steering Systems

#35066 from Jose Osiris Pena · Rule change · TB 24-02 (2024-01 Fastrack)

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"

2024-02-01 STL BOP Adjustments

#35112 from Super Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)

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"

2024-02-01 STL Mazda 12A

#35320 from Super Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

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.~~"

Cal Club 2024 → Cal Club 2025 2024-02-23 to 2025-02-22

2024-08-01 FE Hoosier Tire Decal Placement

#36435 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)

In FE, GCR section 9.1.8.I.2.M, add the following:
"b. Hoosier FE/FE2 Decal Placement:
Five (5) "Hoosier" decals are required in the following locations: One (1) small "Hoosier" decal on the nose or the front shock
cover of the car. One (1) 12" "Hoosier" decal on the outside vertical plane of each front wing plate. One (1) 12" "Hoosier" decal
on the vertical plane of each of the lower floor panels just in front of the rear wheels. Hoosier decals are available, free of charge,
from all Hoosier tire distributors and SCCA Enterprises."

2024-09-01 FE Protest Fee Clarification

#36540 from SCCA Staff · Rule change · TB 24-09 (2024-09 Fastrack)

In FE, GCR section 9.1.1.I.2.U.b.3, change as follows:
"Protest Fee: ~~Regional -$25.00, National -$50.00.~~ See GCR section 8.3.1.D for fees and payment procedure."
In SRF, GCR section 9.1.8.D.1.U.b.3, change as follows:
"Protest Fee: ~~Regional -$25.00, National -$50.00.~~ See GCR section 8.3.1.D for fees and payment procedure. Item 1 will be done by
the CSR or other shop that is equipped for this type of work and will be paid directly."

2024-09-01 FE Update on Letter 36620 with new Hoosier Contingency Decal Info

#36625 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)

In FE, GCR section 9.1.1.I.2.M.b, change as follows:
"~~Five (5) "Hoosier" decals are required in the following locations: One (1) small "Hoosier" decal on the nose or the front shock~~
~~cover of the car. One (1) 12" "Hoosier" decal on the outside vertical plane of each front wing plate. One (1) 12" "Hoosier" decal~~
~~on the vertical plane of each of the lower floor panels just in front of the rear wheels. Hoosier decals are available, free of~~
~~charge, from all Hoosier tire distributors and SCCA Enterprises~~ Per Hoosier's contingency program, three (3) decals are required to
qualify for contingency awards. One (1) decal must be located on each side of the car and one (1) decal must be visible on the
front."

2024-12-01 FE Brake Line to A-Arm Covers

#37110 from Robey Clark · Rule change · TB 24-12 (2024-12 Fastrack)

In FE, GCR section 9.1.1.G.2.K, add the following:
"g. If used, SCCA Enterprises Part # WM803010 Brake Line to Control Arm covers must be used as delivered and must be securely
fastened with zip ties/tie straps or tape. Part # WM803010 is the only approved part and may serve no other purpose."

2024-12-01 STL Request to Remove Miata Hubs from General category

#37138 from Christopher Childs · Rule change · TB 24-12 (2024-12 Fastrack)

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~~."

Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21

2025-05-01 STL E&O: SMX Allowance in STL

#37945 from Greg Amy · Rule change · TB 25-05 (2025-05 Fastrack)

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 Miata on this page: Jared Korth, Ricardo Arruda, Gavin Wardle, Ryan Gutile, Bryce Johnson, Andy Chittum, Adrian Comstock

2025-08-01 STL Lotus Weight Reduction

#38772 from Club Racing Board · Rule change · TB 25-08 (2025-08 Fastrack)

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"

2025-09-01 FE FE & FE2 Rule Updates

#38901 from Robey Clark · Rule change · TB 25-09 (2025-09 Fastrack)

Effective 9/1/25 in FE, GCR section 9.1.1.G.1.A, change as follows:
"Definition
~~FE’s with the Mazda 2.0L MZR engine will be classed as “FE2” and will use the class designation FE2. The Mazda 2.0L MZR motor~~
~~can be used in all SCCA events. It shall run under all FE Preparation rules except as noted below:~~
~~a. 2.0L MZR may be run with an Elite 5SPD or a Complete SADEV 6SPD transmission Kit~~
~~Must use the following:~~
~~b. 2.0L only Intake Manifold Part # WM30106~~
~~c. Throttle Body Part # WM591930-Jenvey~~

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~~d. PE ECU Kit Part # 1192012~~
~~e. Nippon-Denso Alternator Part # WM902127~~
~~f. Oil Filter Adaptor Part # WM301050 & Oil Filter Part # G301022~~
~~g. PCV Valve Part # WM391502~~
~~h. The car shall weigh 1270 lbs. minimum, including the driver.~~
~~i. 16” MAZDA logo on each side of the engine cowling and the Mazda wing & name logo on the front center of the nose cone.~~
~~These are mandatory decals.~~
~~j. 2.0L MZR required Spark Plug Part# ND ITV 24~~
Formula Enterprises cars "FE" with Mazda 2.0L MZR engine are classed as "FE2." FE2 is the primary class in all SCCA events and
must run under all FE Preparation rules except as noted below:
Mandatory items
16” MAZDA logo, each side of the engine cowling, Mazda wing logo, front center of the nose cone.
Table 2 (Spec Line Cars)
Car Engine
Wheel
Width
(in)
± .060
Aero Transmission Weight Notes

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

2025-10-01 FE FE & FE2 Bubble Tail

#38978 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)

In FE, GCR section 9.1.1.G.2.F.k, change as follows:
"Enterprises bubble tail P/N: WM138014 is allowed for FE and is the only configuration for FE2."

2026-01-01 FE FE & FE2 Rule Updates

#39484 from Robey Clark · Rule change · TB 26-01 (2026-01 Fastrack)

In FE, GCR section 9.1.1.G.2.G.a.1, add the following:
"NO MODIFICATIONS ARE ALLOWED EXCEPT WHERE SPECIFICALLY AUTHORIZED WITHIN THESE RULES. This includes all fuel
injection and engine management components, including exhaust, cooling, electrical and lubrication systems. All systems are
subject to test procedures and must conform to OEM / SCCA Enterprises specifications as stated and supplied by Enterprises. All
fluids, except fuel, are unrestricted."
In FE, GCR section 9.1.1.G.2.T, add the following:
"If a competitor refuses to give their engine and/or unlabeled parts for testing per a request of the Class Compliance Chief (CCC)
or Chief Steward, the following penalties will automatically be imposed:"

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In FE, GCR section 9.1.1.G.2.T.d, add the following:
"The car and drivetrain are suspended from competition until the unit(s) specified by the CCC or Chief Steward are replaced."
In FE, GCR section 9.1.1.G.2.T, add a new section as follows:
"g. Any drivetrain part found to be out of spec, during voluntary or involuntary inspection, will constitute a Drivetrain Violation.
Penalties may be assessed post event."

2026-01-01 STL Weight adjustment for STL

#39579 from Super Touring Committee · Rule change · TB 26-01 (2026-01 Fastrack)

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.

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