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.
GT3 has no laps in the events chosen. It ran at Cal Club 2024, Cal Club 2023, Cal Club 2022: add those events.
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.
Rule changes between these events
Cal Club 2022 → Cal Club 2023 2022-02-17 to 2023-02-24
cars addedGT3 Ginetta G40 classified with Mazda MZR 1999cc at 2060 lbs or Ford Duratec 2260cc at 2195 lbs.
As printed in Fastrack
In GT3 Cars - Ginetta, classify Ginetta G40 as follows: GT3 Cars - GINETTA Model Years Body Style Drive- line Wheel- base (in) Notes Ginetta G40 2010-
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Present 2 Door Coupe RWD 88.6 Must comply with all GT3 rules except as noted on spec line. May use FIA roll cage. Must have complete build specs in possession at all race events. In GT3 Engines - Ginetta (Ford/Mazda), as follows: GT3 Engines – GINETTA (Ford/Mazda) Engine Family Bore x Stroke (mm) Disp. (CC) Head Type Valves / Cyl. Fuel Induction Weight (lbs) Notes
A specification table follows in the original; it is not shown here.
In GT3 Cars - Volvo, classify Volvo S60 as follows: GT3 Cars - VOLVO Model Years Body Style Drive-line Wheel-base (in) Notes Volvo S60 2000-2009 4 Door Sports Coupe FWD 106.9
wordingP2 wing specs correct terminology from 'cord' to 'chord' for 16.5in single or dual element wings.
As printed in Fastrack
In P2 Table 1, AMAC, Asteck, Cheetah, Decker, Fox, LeGrand, Converted F5 spec line, change the notes as follows: "Wings up to 16.5in cord chord of single or dual element;" In P2 Table 1, AMAC-AM5, Fox-2-Seater, Zephyrus, Decker 1/2 spec line, change the notes as follows: "Wings up to 16.5in cord chord of single or dual element;" In P2 Table 1, Bobsy spec line, change the notes as follows: "Wings up to 16.5in cord chord of single or dual element only;" In P2 Table 1, Jondal spec line, change the notes as follows: "Wings up to 16.5in cord chord of single or dual element only;"
fasterGT3 2.0L 4V engines now unrestricted at 2195 lbs minimum weight across all makes.
As printed in Fastrack
In GT3 Engines Spec Lines, add to Notes the following: Acura F20C 1997cc: "May run unrestricted at 2195 lbs." Acura K20A 1998cc: "May run unrestricted at 2195 lbs." Audi 1984cc: "May run unrestricted at 2195 lbs." BMW 1895cc: "May run unrestricted at 2195 lbs." Chevrolet 1998cc: "May run unrestricted at 2195 lbs." Chrysler/Dodge/Plymouth 1997cc: "May run unrestricted at 2195 lbs." "Ginetta 1999cc: May run unrestricted at 2195 lbs."
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Honda F20C 1997cc: "May run unrestricted at 2195 lbs." Honda K20A 1998cc: "May run unrestricted at 2195 lbs." Mazda 1999cc: "May run unrestricted at 2195 lbs." Mitsubishi/Eagle 1997cc: "May run unrestricted at 2195 lbs." Nissan QR25DE/DD 1998cc: "May run unrestricted at 2195 lbs." Nissan SR20-DE/VE: "May run unrestricted at 2195 lbs." Saab 1985cc: "May run unrestricted at 2195 lbs." Volkswagen1984cc: "May run unrestricted at 2195 lbs."
slowerGT3-TCR: Audi RS3 LMS SEQ power to 90%, weight to 3177 lbs; RS3 LMS DSG power to 90%; Honda Civic Type R power to 90%, weight to 3210 lbs; Hyundai i30N power to 90%, weight to 3254 lbs; VW Golf GTI SEQ power to 90%, weight to 3177 lbs; Gol…
As printed in Fastrack
In GT3 Spec Lines, GT3-TCR, change as follows: Make/Model Audi RS3 LMS (2016-2020) SEQ: Power Level: "100% 90%" Weight: "3175 3177" Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only." Make/Model Audi RS3 LMS (2016-2020) DSG: Power Level: "100% 90%" Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."
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Make/Model Honda Civic Type R (2016-2020): Power Level: "100% 90%" Weight: "3200 3210" Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only." Make/Model Hyundai I30N (2016-2020): Power Level: "100% 90%" Weight: "3200 3254" Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only." Make/Model Volkswagen Golf GTI (2016-2020) SEQ: Power Level: "100% 90%" Weight: "3175 3177" Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only." Make/Model Volkswagen Golf GTI (2016-2020) DSG: Power Level: "100% 97.5%" Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."
In F500, GCR Section 9.1.1.D.15.D., change as follows: "Stand-alone after market aftermarket ECUs are not permitted." In P2, GCR Section 9.1.8.F.3.a., change as follows: "As manufactured and ground by Oldsmobile or by an after after market aftermarket cam manufacturer to Oldsmobile factory specifications for Vin.A (W41) or Mantapart #OP 1149." In P2, GCR Section 9.1.8.F.3.b., change as follows: "As manufactured and ground by Oldsmobile or by an after market aftermarket cam manufacturer to Oldsmobile factory profile Vin. D or Mantapart #OP 1148."
fasterGT3 cars can use up to 18" wheels with 12.0" tire cross section and 26.0" diameter at 5% weight penalty, down from 8%.
As printed in Fastrack
In Grand Touring Category Specifications, GCR Section 9.1.2.F.10.b, change as follows: "The maximum wheel size for GT3 cars is 15 x 7”. Alternatively: GT3 cars may run up to a maximum 17" x 9" wheel with a weight penalty equal to three (3) percent of the car's weight as listed on the specification line. The maximum vehicle weight shall be rounded to the nearest pound. Alternatively, a Additionally: Any wheel up to 18” with a maximum tire cross section of 12.0” and a maximum tire diameter of 26.0” may be used with a weight penalty equal to eight five (5) percent of the car’s weight as listed on the specification line. The minimum vehicle weight shall be rounded to the nearest pound. A maximum brake rotor diameter of 13.0” may be used with alternate wheels. Cars using 15” American Racer 23.5- 10.0-15, bias ply, non-belted tire may do so without the weight penalty."
P2 E&O Clarification of Chassis Construction Requirements
wordingP2 chassis construction rules clarified: fully composite or partially composite requiring composite for mobility allowed; partial composite must roll without composite parts.
As printed in Fastrack
In P2, GCR section 9.1.8.C.A.1, add the following: "Chassis fully composed of composite structural materials or chassis partially composed of composite materials that is not capable of rolling on its wheels without the composite materials being installed." In P2, GCR section 9.1.8.C.C.1, add the following: "Allow for any form of chassis construction except fully composite chassis. A chassis partially composed of composite materials must satisfy the requirements of section 9.4.5.A, B, C, E, F and be capable of rolling on its wheels without the composite materials being installed."
wordingGT3 Fiat 124 Spider Pininfarina reclassified by model year, body style, drivetrain, and wheelbase.
As printed in Fastrack
In GT3 Cars - FIAT Spec Lines, classify 124 Spider Pinnafarina Spider as follows: GT3 Cars - FIAT Model Years Body Style Drive-line Wheel-base (in) Notes
wordingGT taillights may now be original style or a panel graphic with functioning red LED brake lamps; wording change only.
As printed in Fastrack
In GT, GCR Section 9.1.2.F.7.a.6: "Glass and/or plastic headlights, front parking lights, front signal lights, lenses, and bulbs shall be removed. Headlight openings shall be covered with a wire mesh screen or panel having the same contour as the original lens, mounted so that the headlight bezel/rim remains in place, maintaining the standard appearance of the Production automobile. Side marker light assemblies shall be removed and the resulting openings covered with a plate whose dimensions do not exceed those of the original parts; side marker lights that are an integral part of the taillight assembly cannot be removed. Other lighting parts and operating mechanisms may be removed. In the case of pop-up headlights, the entire assembly may be removed and the opening covered with a screen or plate (as above, without the headlight bezel/rim requirement) which provides a stock appearance. It is not
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permitted to relocate the standard headlight, parking light, signal light, etc., openings. Traditional GT cars only. Not allowed with any "Spec Car, GT2-ST, or any other added non Traditional GT car. Taillights shall be in the original location and shall may be the original style/type of taillight for the make, model, and year of car. A rear body panel having the same contour as the original lens area and in the original location, may be fitted with a tail-light graphic of the original style/type frame/lens adhered to it. If side marker lights are an integral part of the tail-light assembly they must be represented by the panel graphic. These panel/graphics shall have a functioning red LED lamp assembly fitted through them on both sides of the car to serve as brake lights. A 15-watt or equivalent rain light may be included with-in this LED assembly or may be a separately mounted single or dual LED assembly."
wordingGT2 TA2 and GTA throttle body part numbers updated to GM 90mm electronic #12570790 or Edelbrock 90mm mechanical #33869 or #3870.
As printed in Fastrack
In GCR Appendix L-TA2 rules, Addendum A, change A.2. as follows: "The throttle body must be either a GM 90mm, electronic, part #1257 → 0790, or Edelbrock 90mm, mechanical, part 33869 or #3870." In GTA, GCR Section 9.1.2.G.3., change as follows: "The throttle body must be either a GM 90mm, electronic, part #1257 → 0790, or Edelbrock 90mm, mechanical, part 33869 or #3870."
wordingP2 chassis rules clarified to allow composite materials in non-fully-composite construction; anti-intrusion panel attachment standardized; Stohr and converted F600 cars added with specific allowances.
As printed in Fastrack
In P2, GCR section 9.1.8.A.1, change as follows: "Chassis fully composed of composite structural materials or chassis partially composed of composite materials that is not capable of rolling on its wheels without the composite materials being installed." In P2, GCR section 9.1.8.C.C.1, change as follows: "Allow for any form of chassis construction except fully composite chassis incorporating composite structural materials. A chassis partially composed of composite materials must satisfy the requirements of section 9.4.5.A, B, C, E, F, and be capable of rolling on its wheels without the composite materials being installed. Both tube frame and aluminum or steel monocoque chassis construction are allowed.”
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In P2, GCR section 9.1.8.C.2, change as follows: "Anti-intrusion panels are allowed anywhere on the sides of the chassis. Materials and attachment are is unrestricted. Attachment points must be at least 15cm (5.906 inches) apart center to center using fasteners no larger than 6.5mm (0.256 inches) diameter.” In P2 Table 1, add the following: P2 Table 1 (Spec Line Cars)
A specification table follows in the original; it is not shown here.
inductionGT3 normally aspirated cars may use intake chokes instead of SIRs, fitted to each carburetor barrel, same size as required SIR.
As printed in Fastrack
In GT2, 3, LITE Category Specifications, GCR Section 9.1.2.F.13.m., add the following: " For GT3 only: 1. As an option, induction system "Chokes" may be used where a SIR is required. Said chokes shall be fitted to each barrel of carburetor/throttle body and all airflow into engine must pass through them. Choke size will be the same as listed SIR unless noted. This option is for normally aspirated cars with SIRs only and does not apply to turbo cars with TIRs."
fasterGT3 2.0L 4-valve non-turbo engines may run unrestricted at 2060 lbs instead of with a choke restriction.
As printed in Fastrack
In GT2, 3, LITE Category Specifications, GCR Section 9.1.2.F.13.m., add the following: “2. All 2.0 liter 4-valve non-turbo engines currently listed in GT3 shall be permitted to run without any restriction (SIR or chokes) at 2060lbs.”
Cal Club 2023 → Cal Club 2024 2023-02-24 to 2024-02-23
P2 Remove redundant effective date language and update engine table
slowerP2 motorcycle engines: 2011+ Kawasaki restrictor reduced to 34mm, minimum weight raised to 1100 lbs; 2009+ other brands weight raised to 1100 lbs.
As printed in Fastrack
In P2, GCR section 9.1.8.C.D.2, change as follows: "Height: No part of the vehicle having special or significant aerodynamic function shall exceed a height of 115cm (45.275 inches) above the ground with the car in normal racing trim, driver aboard." In P2, GCR section 9.1.8.C.D.3, change as follows: "However, no portion shall extend more than 10cm (3.937 inches) beyond a plane tangent to the outer face of the front and rear wheels with tires." P2 Engine Table Spec
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Line Engine Series
A specification table follows in the original; it is not shown here.
cars addedFields Cardinal V8 classified in GT1 with Ford V8 engine, 4.9L displacement, 2100 lbs minimum weight.
As printed in Fastrack
In GT Spec Lines, GT1 Cars - Fields Cardinal, classify Fields Cardinal V8 as follows: GT1 Cars – Fields Cardinal Model Years Body Style Drive- line Wheel- base (in) Notes Fields Cardinal V8 2023 2 Dr. RWD 92.0 Roll Cage MUST be modified to comply with
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GCR Section 9.4. In GT Spec Lines, GT1Engines - classify Ford V8 as follows: GT1 Engines - Ford Engine Family Engine Type Bore x
A specification table follows in the original; it is not shown here.
wordingP2 side body height requirement clarified: outermost surface between wheel openings must equal front axle centerline height.
As printed in Fastrack
In P2, GCR section 9.1.8.C.D.6, change as follows: "As viewed from the side, T the outermost surface of side pods body between the front and rear wheel openings and above the floor must have a minimum height equal to the height of the front axle centerline."
P2 Clarify closed cockpit single seat car allowance
wordingP2 closed cockpit single seat cars now prohibited unless specifically allowed in Table 1.
As printed in Fastrack
In P2, GCR section 9.1.8.C.C, add a section as follows: "4. Closed cockpit single seat cars are not permitted unless specifically allowed by a spec line in Table 1."
fasterGT3 cars using 15" American Racer 23.5-10.0-15 bias ply tires avoid weight penalty.
As printed in Fastrack
In GCR section 9.1.2.F.7.c.10.b, add the following: "Any racing tire including DOT is allowed in GT3. Cars using 15” American Racer 23.5-10.0-15, bias ply, non-belted tire may do so without the weight penalty."
wordingGTL spec lines moved to contiguous position with GT2 and GT3; GTA category and spec lines renumbered and moved behind GTL.
As printed in Fastrack
from the current (or before) Table of Contents (TOC), to what is shown in the after TOC. GTL spec lines will now be contiguous with GT2 and 3 spec lines. GTA category and spec lines will be moved and renumbered behind GTL. GTA Section will not change but page numbers will, (as shown in Red italics). 9.1.2.F. GT-2, 3, LITE Category Specifications 314 GT2 Cars 327 GT2/ST 341 GT3 Cars 348
slowerGT3 2.0L SIR cars lose 32mm unrestricted option, now require restrictor at 2195lbs minimum.
As printed in Fastrack
In GT3 Spec Lines, GT3 Cars, change as follows: "Acura F20C 1997cc 32mm SIR May run unrestricted at 2195lbs. K20A 1988cc 32mm SIR May run unrestricted at 2195lbs. Audi 1984cc 32mm SIR May run unrestricted at 2195lbs. BMW 1895cc 32mm SIR May run unrestricted at 2195lbs. Chevrolet 1998cc 32mm SIR May run unrestricted at 2195lbs. Chrysler/Dodge/Plymouth 1997cc 32mm SIR May run unrestricted at 2195lbs. Ginetta MZR 1999cc 32mm SIR May run unrestricted at 2195lbs.
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Honda F20C 1997cc 32mm SIR May run unrestricted at 2195lbs. K20A 1988cc 32mm SIR May run unrestricted at 2195lbs. Mazda MZR 1999cc 32mm SIR May run unrestricted at 2195lbs. Mitsubishi/Eagle 1997cc 32mm SIR May run unrestricted at 2195lbs. Nissan QR25DE/DD 1988cc 32mm SIR May run unrestricted at 2195lbs. SAAB 1985cc 32mm SIR May run unrestricted at 2195lbs. VOLKSWAGON 1984cc 32mm SIR May run unrestricted at 2195lbs.
P2 Correct Table 1 for Engine Date Range Specifications
cars addedGT3 adds Toyota GR 86 (DR86) 2021–2024, 2-door RWD, 101.3 in wheelbase.
As printed in Fastrack
In GT3 Cars - TOYOTA Spec Lines, classify DR86 as follows: GT3 Cars - TOYOTA Model Years Body Style Driveline Wheelbase (in) Notes DR86 2021-2024 2 DR RWD 101.3
P2 E&O - Clarify B.1 modified engine range in AMAC spec lines
unclearP2 Suzuki GSX-R1000 07/08 engine crankcase may swap to GSX-S1000 16/19 part #11301-04840.
As printed in Fastrack
In P2 Engine Table, Spec Line B.1, add to notes as follows: "No modifications allowed on engines manufactured after 2008 model year. 2007-2008 Suzuki GSX-R1000 crankcase part #11300-21860 may be replaced with 2016-2019 Suzuki GSX-S1000 crankcase part #11301-04840."
GT3 Request to Include Toyota FA24D Engine for use in GT3
fasterGT1, GT2, GT3, GTL, GTX rear spoiler maximum surface area limit of 295.0 square inches removed.
As printed in Fastrack
In GCR Section 9.1.2.G (GTA Category Specifications), change as follows: “9.1.2.G.III.I The single-plane rear spoiler must be mounted at an angel angle from 50 to 75 degrees (perpendicular to the ground being 90 degrees) and may not extend beyond the rear bumper when viewed from directly above the rear bumper. Spoilers must be a minimum of .063 aluminum or Lexan and may vary in overall height to match the contours of the bodywork. The rear spoiler dimensions shall not exceed 59.0 inches wide by 5.0 inches in height, (measured on the material surface) , or 295.0 square inches total surface area. Braces to prevent spoiler deflection are allowed, but may serve no other purpose.”
fasterGT1/GT2/GT3/GTL/GTX Direct Injection now permitted if OE, using only OE pump, hoses, injectors.
As printed in Fastrack
In GCR, Section 9.1.2.F.7.5.E. change as follows: “Direct Injection is not permitted only if it came OE and must be installed using only OE high pressure pump(s), hard and soft hoses and injectors.”
GT3 GT2/3 remove Direction Injection not allowed in Spec line notes
fasterGT2/3 Nissan, Mazda, Mitsubishi 4G93, QR25DE/DD, QE25DE/DD Direct Injection now permitted per 9.1.2.F.7.5.E.
As printed in Fastrack
In GT2/3 modify Spec Line notes as follows: GT2: Nissan: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” GT3: Mazda: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” Mitsubishi 4G93: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E. ” Nissan QR25DE/DD 1988cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” Nissan QE25DE/DD 2489cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.”
In P2 Engine Table, Spec Line E, change the notes as follows: "No engine modifications except for dry sump oil system, ECU mapping, and exhaust system the following: oil system, ECU, and exhaust are unrestricted."
wordingP2 FIA Group CN spec notes clarified: Series changed to Challenge, documentation requirement moved to online link.
As printed in Fastrack
In P2 Table 1, FIA Group CN spec line, change the notes as follows: "FIA Group CN homologated chassis, brake calipers and discs, hub carriers, and suspension components are required. V de V European Proto Endurance Series Challenge permitted bodywork, rear diffuser, wing, wheels, and assisted shifting are allowed. Car M must comply with all other P2 requirements. Competitors must have copies of FIA Group CN Technical Regulations and V de V European Proto Endurance Series Challenge Sporting and Technical Regulations in their possession and present them upon request are available here: https://www.scca.com/pages/technical-forms-and-downloads."
slowerGT3 cars may run +1mm SIR above spec with 175 lb weight penalty added.
As printed in Fastrack
GCR, Section 9.1.2.F.7. add the following: "m. GT3 Rules Concerning Alternate Weights and SIRs. 1. Traditional GT3 cars that that are currently required to run an SIR may run +1mm above spec line listed size size with a 175lb. weight penalty. 2. Competitors running the alternate SIR must display "+1.mm" on the side of their car next to the new weight."
cars addedGT3 adds Datsun 1200 B110 (70–73), 90.6 in wheelbase, engine per GT3 spec or alternate Nissan request.
As printed in Fastrack
In GT3 Spec Lines, classify GT3 Cars - Nissan 1200 (B110) as follows: GT3 Cars - Nissan Model Years Body Style Drive- line Wheel- base (in) Notes 1200 (B110) 70-73 2dr RWD 90.6 Must use an engine that is already classified to run in GT3 or may request an alternate Nissan (Datsun)
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engine for consideration.
GT3 Honda Civic Type R TCR Weight Reduction Request
In GCR, Section APPENDIX L. 2013 TA2 TECHNICAL REGULATIONS, B.2.c., change as follows: "B. Aerodynamic Devices 2. Rear wing c. The entire rear wing assembly, including the end plates and any Gurney flap, shall be mounted level with, or below, the peak of the roof. OEM aerodynamic devices do not need to adhere to the height rule."
A specification table follows in the original; it is not shown here.
fasterGT3 VW Fun Cup Beetle Sealed exempt from 150 lbs consolidation add-on weight.
As printed in Fastrack
In GT3 Spec Lines, GT3 Engines - VOLKSWAGON, “Fun Cup” Beetle Sealed, add to Weight (lbs) as follows: "Shall be exempt from consolidation add-on weight of 150 lbs."
slowerGT3U with 15x7 wheels and 225 tires gains 75 lbs to 225 lbs over GT3 weight; wheel weight penalties clarified.
As printed in Fastrack
In GCR 9.1.2.F.3.9., change as follows: "All GT3U (Majors and Runoffs) cars shall run at current GT3 race weight plus 150lbs. All GT3U cars shall run one of the following tire and wheel combinations: A Dot approved tire with maximum section width of 245. GT3U cars base wheel is a maximum of 15”x9”. “18”x9” wheels are allowed with a 3% weight addition. GT3 U cars utilizing 15”x7” wheels are limited to a section width of 225 with a 25 pound weight reduction. All GT3U (Majors and Runoffs) cars using up to 15"x7" wheels limited to 225 section width tires shall run at current GT3 race weight plus 225lbs. All Gt3U cars shall run a DOT approved tire with a maximum section width of 245. GT3U cars are allowed optional 15"x9" wheels with a 1.5% weight addition or up to 18"x9" wheels with a 3.0% weight addition to the total weight including the 225 lbs."
slowerGT3U cars with 15×7" wheels add 225 lbs to GT3 weight; wider wheels allowed with weight penalties up to 3.0%.
As printed in Fastrack
In GCR Section 9.1.2.F.3.9, add as follows: "All GT3U (Majors and Runoffs) cars using up to 15”x7” wheels limited to 225 section width tires shall run at current GT3 race weight plus 225lbs. All Gt3U cars shall run a DOT approved tire with a maximum section width of 245. GT3U cars are allowed optional 15”x9” wheels with a 1.5% weight addition or up to 18”x9” wheels with a 3.0% weight addition to the total weight including the 225 lbs. TCR cars are ineligible for GT3/GT3U."
suspension & brakesGT3U cars must maintain 3.0" minimum ride height on frame rails and 2" minimum on front spoiler and splitter.
As printed in Fastrack
In GCR, Section 9.1.2.F.3., add the following: "10. All GT3 cars running in STU must meet the minimum ride height of 3.0" for the main frame rails not including rub blocks and a 2” minimum for the front spoiler and splitter."
What the rules allowed changed as listed; this does not say what any particular car ran.