BoP Lab / Classes / GTL

GTL vs FP vs FE2 pace at every track

Lap times across years say as much about the weather as the class. % of GTL is each class's best lap as a share of GTL's on the same day, so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

Class · click a class to switch, + to compare alongside (up to 4)

AS +B-Spec +EP +FA +FC +vsFE2 ×FF +vsFP ×FV +FX +GT1 +GT2 +GTL×GTX +HP +P +P2 +SM +SMX +SRF3 +STL +STU +T1 +T2 +T3 +T4 +Show 50 inactive classes

Series Runoffs Super Tour Both

Reference · what % is measured against

Tracks · untick to narrow Auto Club Speedway Barber Motorsports Park Blackhawk Farms Raceway Buttonwillow Raceway Park Circuit of St. Louis (formerly Gateway Motorsports Circuit of the Americas Daytona International Speedway Grattan Raceway Hallett Motor Racing Circuit Homestead-Miami Speedway Indianapolis Motor Speedway Laguna Seca Michelin Raceway Road Atlanta Mid-Ohio Sports Car Course New Jersey Motorsports Park NOLA Motorsports Park Pacific Raceways Pittsburgh International Race Complex Portland International Raceway Pueblo Motorsports Park Road America Sebring International Raceway Sonoma Raceway Summit Point Raceway Thunderhill Raceway Park Virginia International Raceway Watkins Glen International Willow Springs Raceway World Wide Technology Raceway

Closest to the field: GTL 100.0% of GTL Jim Dentici, Daytona International Speedway Runoffs 2015 race · FP 97.3% of GTL Cliff Ira, Virginia International Raceway Runoffs 2023 race · FE2 84.6% of GTL Franklin Futrelle, Virginia International Raceway Runoffs 2023 race

% of GTLLap times

GTLFPFE2solid race · dashed qualifying · slower is lower

GTLFPFE2solid race · dashed qualifying · each class's best lap as a share of GTL's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker

	Event	GTL			FP					FE2
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs GTL	% of GTL	Qual best	Race best	Trap	vs GTL	% of GTL
	Road America Runoffs 20262026-09-28				2:33.275Stephen Simonds · fastest of 26 · top 5 within 1.0s+0.880s (+0.58%)	2:33.240David Strittmatter · fastest of 25 · top 5 within 1.7s-1.031s (-0.67%)	132.4David Strittmatter±0.0 mph (±0.0%)			2:12.326Franklin Futrelle · fastest of 8 · top 5 within 1.9s-0.149s (-0.11%)	2:11.881Franklin Futrelle · fastest of 8 · top 5 within 1.6s-1.458s (-1.09%)	143.5Steve Whitston-5.5 mph (-3.7%)
36 rule changes (GTL: 1, FP: 34, FE2: 1)10 weight · 9 engine · 7 induction · 2 cars added · 1 removed · 1 suspension & brakes · 1 tyres & wheels · 4 wording · 1 othershowhide 2026-08-01 FP Mini Cooper Compression Ratio #40517engine 2026-07-01 FP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7 #40322engine 2026-07-01 FP 1275 Midget/Sprit Alternate intake manifold E/O #40370induction 2026-07-01 FP HP Honda Civic (92-95) #40464weight -70 lbs 2026-05-01 FP Miata track width - errors and omissions #39976wording 2026-05-01 FP GCR Spec Line Correction #39977induction 2026-05-01 FP CGR Spec Line Weight Correction #39978weight 2026-05-01 FP Triumph GT6 Spec Change. #40098induction 2026-05-01 FP Request to Classify BMW E21 320i #40110cars added 2026-05-01 FP BMW 318is 84-85 engine displacement correction #40116engine 2026-03-01 FP Correct Valve Sizes on FP Fiat x19 1300 and 1500 #39850engine 2026-03-01 FP Dual Carburetor Adjustments #39851induction 2026-03-01 GTL Remove GT3U from GCR as it is now in STU #39862removed 2026-02-01 FP Request Toyota 5E Series Engines #38208engine 2026-02-01 FP Request for Toyota 4E Series Engines #38209engine 2026-02-01 FP Dual Carbs for the Fiat X1/9 #39593induction 2025-12-01 FP TR2 Notes E&O #39180weight 2025-12-01 FP Balance of Power #39187weight +50 lbs 2025-12-01 FP Competition Adjustment Request #39259weight -80 lbs 2025-12-01 FP Factory Roll Bar Removal on VW Convertible #39268wording 2025-12-01 FP FP Parity Request #39325weight +50 lbs 2025-12-01 FP Adjust former-GTL Honda's with B/D-Series Engines #39374engine 2025-11-01 FP Please Lower Weight of 280Z #38871weight -160 lbs 2025-11-01 FP Miata Weight Adjustment Follow Up #38949weight -25 lbs 2025-11-01 FP Weight Break for 1098 Midget / Sprite #38970weight -80 lbs 2025-11-01 FP HP Volvo 142 spec omission #38994engine 2025-11-01 FP HP Mini DOHC 1.6 #38996engine 2025-11-01 FP 83-88 FP Scirocco Spec Line Creation #38997cars added 2025-11-01 FP Add to Rabbit description #39019wording 2025-11-01 FP Clean-up 9.1.5.E.7e #39025suspension & brakes 2025-11-01 FP Add TB size to Ford Mustang (94-98) Spec Line #39130induction 2025-11-01 FP Correct Existing VW Scirocco Spec Line #39140weight 2025-10-01 FE2 FE & FE2 Bubble Tail #38978other 2025-10-01 FP HP Plymouth Arrow spec omission #38995wording 2025-10-01 FP Add Wheel Diameter to Appendix G #39008tyres & wheels 2025-10-01 FP Add TB ID tolerance to general Prod rules #39009induction
	Road America Runoffs 20252025-09-29				2:32.395David Strittmatter · fastest of 20 · top 5 within 2.9s+0.068s (+0.04%)	2:34.271Chris Bovis · fastest of 19 · top 5 within 1.8s+1.025s (+0.67%)	132.4David Strittmatter-1.1 mph (-0.8%)			2:12.475Franklin Futrelle · fastest of 11 · top 5 within 1.4s+0.969s (+0.74%)	2:13.339Franklin Futrelle · fastest of 10 · top 5 within 0.6s+0.591s (+0.45%)	149.0Steve Whitston+3.7 mph (+2.6%)
21 rule changes (GTL: 3, FP: 17, FE2: 1)8 weight · 4 induction · 2 cars added · 2 engine · 1 aero · 4 othershowhide 2025-07-01 FP BMW Z4 update #38490induction 2025-07-01 FP EP Fiat 124 Spider Competition Adjustment Request #38498weight -50 lbs 2025-06-01 FP Base Weight Adjustment for H-Production X1/9 Spec Lines #38255weight -50 lbs 2025-04-01 FE2 Driver Safety & Comfort #37965other 2025-04-01 FP Request for Classification of Chevrolet Spark #37755cars added 2025-04-01 FP Request to Lower Ford Festiva Minimum Weight to 1600 LBS #37939weight -100 lbs 2025-03-01 FP Request Competition Adjustment to BMW Z3 2.5L #37120induction 2025-03-01 FP FP Class Adjustments #37458weight 2025-03-01 FP Interpretation of Production Rules on Mirrors #37235other 2025-03-01 FP Weight Reduction for Honda S2000 #37466weight 2025-03-01 FP Mazda 1999 Miata 1.8L #37488weight -50 lbs 2025-03-01 FP Errors & Omissions #37648cars added 2025-03-01 FP GTL/FP consolidation 2025 Rules #37659induction 2025-02-21 FP Effective date for Jan 2025 GCR updates #37654induction 2025-01-01 FP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line #37119weight -50 lbs 2025-01-01 FP Fix Error in Spridget Spec Line #37437engine 2025-01-01 FP Create ruleset that allows GTL cars to run in FP #37485other 2025-01-01 GTL Correct language regarding OEM Areo Devices #37137aero 2024-11-01 FP 1275 HP Spridget Level 2 Only #36518other 2024-11-01 GTL G16E-GTS Fuel Injection Spec Line Change #36588engine 2024-11-01 GTL GTL Alternate Weight and Choke Option for L16 engine #36653weight
	Road America Runoffs 20242024-10-01	2:30.858Peter Shadowen · fastest of 14 · top 5 within 4.4s-1.085s (-0.71%)	2:30.844Chris Bovis · fastest of 13 · top 5 within 3.7s-0.757s (-0.50%)	133.3Peter Shadowen+1.8 mph (+1.4%)	2:32.327Cliff Ira · fastest of 26 · top 5 within 2.1s+0.913s (+0.60%)	2:33.246Kevin Ruck · fastest of 24 · top 5 within 1.4s-0.787s (-0.51%)	133.5David Strittmatter+0.3 mph (+0.2%)	+2.402squal +1.469s	101.6%qual 101.0%	2:11.506Porter Aiken · fastest of 18 · top 5 within 0.5s-1.300s (-0.98%)	2:12.748Porter Aiken · fastest of 17 · top 5 within 2.0s-0.523s (-0.39%)	145.3Porter Aiken+1.9 mph (+1.3%)	-18.096squal -19.352s	88.0%qual 87.2%
37 rule changes (GTL: 16, FP: 21)12 weight · 7 cars added · 7 engine · 5 induction · 1 aero · 3 wording · 2 othershowhide 2024-10-01 FP Errors/emissions Honda Civic/CRX #36700wording 2024-09-01 GTL Request to Include Toyota GR86 in GTL #36324cars added 2024-09-01 GTL Inclusion of Modified Spec Miata for GTL competition #36325cars added 2024-09-01 GTL Include Mazda MX5 RF 2017- in GTL #36428cars added 2024-08-01 FP Errant entry in HP production line item #36231other 2024-07-01 GTL Add GTL to GT3 choke option line. #36236induction 2024-06-01 FP NIssan 300ZX Z31 to EP #35830cars added 2024-06-01 FP RX7 1993 and Up Request In EP Spec Lines, classify #36031cars added 2024-06-01 FP Clean-up Multiple EP RX-8 Spec Lines In EP #36156wording 2024-05-01 FP Request to Replace CRX Plastic Panels #35876wording 2024-05-01 FP FP data and parity #35896induction 2024-05-01 GTL Request for Spec Line 1010 Reconsideration #35009weight +300 lbs 2024-05-01 GTL Allow 34 mm chokes for the Datsun 510 #35661induction +50 lbs 2024-03-01 FP GCR Correction - Redundant HP Spec Lines #35623engine 2024-03-01 FP Update FP Protege (01-03) Model Info #35715other 2024-02-01 FP Update 1988-1991 Civic to Match 1988-1991 CRX #35399weight 2024-02-01 GTL Rear Blade Spoiler Clarification #35261aero 2024-02-01 GTL GT Direct Injection allowance and rules #35437engine 2024-02-01 GTL GT2/3 remove Direction Injection not allowed in Spec line notes #35439engine 2024-01-01 FP FP data #35060weight +25 lbs 2024-01-01 FP Request to Review Z3 2.5 Spec Line #35073weight +50 lbs 2024-01-01 FP Corrections to Honda Spec Lines in FP #35250induction 2024-01-01 FP Miata Alternate Head #35253weight -50 lbs 2024-01-01 FP Triumph GT6 Adjustments #35255weight 2024-01-01 FP Honda S2000 throttle body #35272induction 2024-01-01 FP Correction within Triumph TR8 Spec Line #35315engine 2024-01-01 FP Correction to EP 924S/944 Spec Line #35317weight 2024-01-01 GTL Rotary Engine 12A Rotor Housings #35131engine 2024-01-01 GTL Request to Include Toyota GR86 in GTL #35198cars added 2024-01-01 GTL Errors and Omissions, GTL engines & Cars #35226engine 2023-12-01 FP Porsche 944/924S Rule Change Request #35002weight 2023-12-01 FP FP and HP Toyota Corolla #35030weight -43 lbs 2023-12-01 FP Triumph GT6 Adjustments #35054weight -30 lbs 2023-12-01 GTL Small Engines in GT Lite #34842engine 2023-12-01 GTL Request to Classify Honda Fit body in GTL #35020cars added 2023-12-01 GTL Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules #34453weight 2023-11-01 GTL Weight for Nissan Sentra/200SX A 1400's #34918weight -50 lbs
	Virginia International Raceway Runoffs 20232023-09-23	2:09.564Peter Shadowen · fastest of 11 · top 5 within 4.9s+1.775s (+1.39%)	2:11.277Graham Fuller · fastest of 10 · top 5 within 2.4s-9.903s (-7.01%)	142.7Peter Shadowen+6.7 mph (+4.9%)	2:08.248Cliff Ira · fastest of 21 · top 5 within 1.0s+2.031s (+1.61%)	2:07.787Cliff Ira · fastest of 20 · top 5 within 0.8s-9.854s (-7.16%)	133.7Cliff Ira+1.1 mph (+0.9%)	-3.490squal -1.316s	97.3%qual 99.0%	1:50.665Charles Russell Turner · fastest of 26 · top 5 within 2.3s-0.188s (-0.17%)	1:51.098Franklin Futrelle · fastest of 19 · top 5 within 1.4s-20.947s (-15.86%)	141.3Franklin Futrelle-0.6 mph (-0.4%)	-20.179squal -18.899s	84.6%qual 85.4%
13 rule changes (GTL: 7, FP: 6)3 cars added · 3 engine · 3 induction · 2 weight · 2 othershowhide 2023-07-01 FP Correct Intake Valve Size on 1500cc Midget/Spitfire #34419induction 2023-07-01 FP ITC to FP? #34286other 2023-06-01 FP Request to Classify Sonic and Fiesta in HP #34264cars added 2023-05-01 FP Classification Request for 1978 Toyota Celica #34097cars added 2023-05-01 GTL Please classify Fields Cardinal V8 #33784cars added 2023-02-01 FP Request to Add Mazda Protege P5 to FP #33664other 2023-02-01 GTL Toyota 4Y Engine Classification Request #33562engine 2023-01-01 FP Review Limited Prep Port Matching Rules #33600induction 2023-01-01 GTL Toyota 4A-F and 4A-FE 1.6L DOHC 16V Engine Request #33415engine 2022-12-01 GTL Fiat HP Limited Prep X1/9 Weight in GTL #33297weight 2022-12-01 GTL GT2 (TA2)/GTA Part Number Update #33315induction 2022-12-01 GTL Request to add Ford Festiva to GTL #33335weight 2022-11-01 GTL Engine Request #33064engine
	Virginia International Raceway Runoffs 20222022-09-24	2:07.789Peter Shadowen · fastest of 14 · top 5 within 2.2s+0.792s (+0.62%)	2:21.180Michael Lewis · fastest of 13 · top 5 within 2.1s+13.343s (+10.44%)	136.0Peter Shadowen+4.9 mph (+3.7%)	2:06.217Eric Prill · fastest of 18 · top 5 within 1.5s-1.219s (-0.96%)	2:17.641Mason Workman · fastest of 15 · top 5 within 3.2s+9.565s (+7.47%)	132.5Cliff Ira+1.2 mph (+0.9%)	-3.539squal -1.572s	97.5%qual 98.8%	1:50.853Charles Russell Turner · fastest of 25 · top 5 within 1.1s-0.209s (-0.19%)	2:12.045Jason Conzo · fastest of 22 · top 5 within 1.8s+19.891s (+17.74%)	141.9Eric Cruz-0.6 mph (-0.5%)	-9.135squal -16.936s	93.5%qual 86.7%
28 rule changes (GTL: 3, FP: 25)9 induction · 6 cars added · 4 engine · 3 weight · 2 tyres & wheels · 1 suspension & brakes · 1 wording · 2 othershowhide 2022-09-01 FP Request to classify VW New Beetle 2.5L in EP #32725cars added 2022-09-01 FP Request Rotary Injection on Dual Y manifold #32775engine 2022-09-01 FP Request for Corrado Stroke & Displacement Correction #32985engine 2022-09-01 GTL Tail lights on all GT category race cars. #32799suspension & brakes 2022-06-01 FP Subaru BRZ Model Years #32500other 2022-05-01 FP Weight Adjustment of Lotus 7 #32213weight +50 lbs 2022-05-01 FP EP MX-5 Global Cup Car #32218weight 2022-05-01 FP Please Class BMW 128i in EP #32370cars added 2022-05-01 FP Inconsistency in Body Work Descriptions #32396other 2022-05-01 FP Request to classify the 1999-2000 Mazda Protege in FP #32398cars added 2022-04-01 FP Mazda RX8 with 13b Rotary #32170induction 2022-04-01 FP Request Idle control valve clarification #32178engine 2022-04-01 FP Correct FP BMW 325e/es Displacement #32394engine 2022-03-01 FP EP Adjustments #31858induction 2022-03-01 FP 1999 3.8L Ford Mustang to EP? #31635weight 2022-03-01 FP Improved Touring Tires #32064tyres & wheels 2022-03-01 FP VW Golf Jetta 2.0L intake and exhaust size correction. #32173induction 2022-03-01 GTL Request to Classify Ginetta G40 in GTL #31599cars added 2022-02-01 FP Throttle Body and Idle Air #31800induction 2022-01-01 FP Porsche 968 Engine Questions #31478induction 2022-01-01 FP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom #31592tyres & wheels 2022-01-01 FP BMW Z3 2.5L Spec Line #31724induction 2022-01-01 FP FP Del Sol VTEC #31859induction 2022-01-01 FP Standardize Level 2 Classifications in FP #31868induction 2021-12-01 FP 944S2 Restrictor #31396induction 2021-12-01 FP Classing Clarification for 1986 Toyota Corolla FX16 #31527cars added 2021-10-01 FP E&O; MR2 Track #31120wording 2021-10-01 GTL Request car classification #31032cars added
	Indianapolis Motor Speedway Runoffs 20212021-09-25	1:51.819Christopher Bovis · fastest of 22 · top 5 within 1.8s+1.488s (+1.35%)	1:51.952Scott Twomey · fastest of 19 · top 5 within 1.7s-0.116s (-0.10%)	129.5Brian Linn	1:51.082Craig Chima · fastest of 39 · top 5 within 1.2s-1.009s (-0.90%)	1:59.933Cliff Ira · fastest of 33 · top 5 within 5.4s+6.926s (+6.13%)	131.8Cliff Ira	+7.981squal -0.737s	107.1%qual 99.3%	1:36.395Max Grau · fastest of 28 · top 5 within 0.7s	1:36.655Max Grau · fastest of 28 · top 5 within 0.7s	146.2Gray Fowler	-15.297squal -15.424s	86.3%qual 86.2%
29 rule changes (GTL: 8, FP: 21)9 weight · 8 cars added · 4 engine · 2 induction · 2 suspension & brakes · 1 tyres & wheels · 1 wording · 2 othershowhide 2021-08-01 FP Request to Allow F22c Engine for 2000-2003 Honda S2000 #30548engine 2021-08-01 FP Request a review of the S14 240SX in EP. #30873weight -200 lbs 2021-08-01 GTL Request to Update GTA Obsolete Part Numbers #30615wording 2021-07-01 FP Lotus/Caterham 7 America Request #30392engine 2021-07-01 FP Request to classify ITC Plymouth Arrow #30588cars added 2021-07-01 FP Reclassification of the 1984/85 BMW 318i from FP to HP #30661cars added 2021-07-01 FP Fiat x1/9 Competition Adjustments #30711weight -50 lbs 2021-07-01 FP Reclassify Daimler SP 250 #30721cars added 2021-07-01 GTL Request clarification for the Honda B18a,bVS B18c #30482weight 2021-07-01 GTL Request to Allow Hood Bulge on Nissan B13 Sentra #30504other 2021-07-01 GTL Request BMW E21 Classing #30582tyres & wheels 2021-06-01 FP Move Porsche 924 in Level 1 Prep From EP to FP #30135cars added 2021-06-01 FP Clarify Application of Percentage Based Weight Penalties #30669weight 2021-05-01 FP Change Classification of 84-87 Mazda 626 from FP to HP #30350cars added 2021-05-01 FP Fiat X1/9 brake rotors #30423suspension & brakes 2021-04-01 FP Please Classify Mazda3 in FP #30165cars added 2021-04-01 FP Golf MkIII Valve Size Request #30268engine 2021-03-01 GTL Request for Help for Mazda 12A #29754weight +50 lbs 2021-02-01 GTL Request LP HP Fiat X1/9 & Bertone 1500 to GTL #30058cars added 2021-01-01 FP Alternate Front Brake Rotors and Calipers for EP AH 3000 #29893suspension & brakes 2021-01-01 FP Request VW weight break #29963weight -50 lbs 2021-01-01 GTL Please Add GTL Nissan 1.8L Engine MRA8DE #29805engine 2021-01-01 GTL Increase 13b SIR size #29867induction 2020-12-01 FP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines #29195weight -50 lbs 2020-12-01 FP Correct Wording for Level 1 and Level 2 Induction Systems #29406induction 2020-12-01 FP Weight Reduction for Datsun Roadster #29409weight -75 lbs 2020-12-01 FP EP TR8 Adjustment #29512weight -100 lbs 2020-12-01 FP Request to Classify 1996-2000 Honda Civic EX #29515cars added 2020-12-01 FP FAJS Carburetor #29576other
	Road America Runoffs 20202020-10-02	2:31.943Chris Bovis · fastest of 14 · top 5 within 6.3s	2:31.601Peter Shadowen · fastest of 14 · top 5 within 7.2s	131.4Peter Shadowen	2:31.414Ethan Shippert · fastest of 23 · top 5 within 2.2s	2:34.033Kevin Ruck · fastest of 21 · top 5 within 2.3s	133.2Sam Henry	+2.432squal -0.529s	101.6%qual 99.7%	2:12.806Scott Rettich · fastest of 25 · top 5 within 0.6s	2:13.271Owen McAllister · fastest of 23 · top 5 within 0.7s	143.4Owen McAllister	-18.330squal -19.137s	87.9%qual 87.4%
38 rule changes (GTL: 17, FP: 19, FE2: 2)8 cars added · 8 induction · 7 aero · 6 weight · 4 engine · 1 tyres & wheels · 3 wording · 1 othershowhide 2020-10-01 FP 84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O #29458tyres & wheels 2020-09-01 FE2 FE/FE2 Oil Cooler #29293wording 2020-09-01 GTL GT Category Wording #29193induction 2020-08-01 FP EP BMW Z3 Rule Clarification #28998engine 2020-08-01 GTL Request to change the Mazda 13b restrictor size #28518induction +175 lbs 2020-07-01 FP Request to Classify Porsche 911 2.0L #28456cars added 2020-07-01 FP Request to change to Carburetor Spec Line 84-87 Mazda 626 #28926induction 2020-07-01 GTL Request to classify 1999-2007 Toyota MR2 Spyder body #28870cars added 2020-07-01 GTL TA2 Gurney flap wicker clarification #28874aero 2020-07-01 GTL STO Gurney flap wicker clarification #28883aero 2020-07-01 GTL GT Gurney flap wicker clarification #28909aero 2020-07-01 GTL Mazda 13b Restrictor Size Follow up to Letter 28518 #29015induction 2020-06-01 FP BMW Cylinder Head Casting and Part Numbers #28708engine 2020-06-01 FP Correct Scirocco Spec line E&O #28892weight 2020-06-01 GTL Stall Test #28709induction 2020-05-01 FP Request to Classify 1990-1994 Mazda Protege #28381cars added 2020-05-01 FP Error in Mini Cooper Spec Line #28713wording 2020-05-01 GTL GTL Wing Rule #28754aero 2020-04-01 FP Caterham 7 Spec Line #28498engine 2020-04-01 FP Request to classify SOHC 1989-90 240SX in F prod L2 #28553cars added 2020-03-01 FP VW Weight and Valve Size Request #27886weight 2020-03-01 FP Request to allow 40 DCOE carb for the Datsun 510 #28195induction 2020-03-01 FP Request to classify Porsche 914 2L in LPrep FProd #28231cars added 2020-03-01 FP Request Ford Fiesta Weight Adjustment #28336weight 2020-03-01 GTL Wing Mounting Upright Size #27641aero 2020-03-01 GTL Wing Mounting Upright Size #27641aero 2020-03-01 GTL GTL wing end plates addition #28243aero 2020-03-01 GTL Clarification to letter #27406 #28309weight -50 lbs 2020-02-01 FP Request for Help for Datsun 1200 #27934induction 2020-02-01 GTL Windshield Clips #27323other 2020-01-01 FP Request to List Mazda Miata Throttle Body Size #27907induction 2020-01-01 FP Request to Classify 2001-2003 Mazda Protege ES in FP #27922cars added 2020-01-01 GTL Request Factory Five Daytona coupe classification #26308cars added 2020-01-01 GTL Request to Classify the MK1 two door Jetta #27648cars added 2019-12-01 FE2 FE / FE2 Update Rules #27624weight 2019-12-01 FP Request to Correct Track of 1988-91 Honda Civic #27487wording 2019-12-01 FP Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency #27661engine 2019-12-01 GTL 88-91 Honda CRX Spec Line Correction #27233weight
	Virginia International Raceway Runoffs 20192019-10-05	2:06.997Peter Shadowen · fastest of 19 · top 5 within 4.0s	2:07.837Bill Ball · fastest of 18 · top 5 within 4.2s	131.1Peter Shadowen	2:07.436Eric Prill · fastest of 19 · top 5 within 0.6s	2:08.076Eric Prill · fastest of 18 · top 5 within 0.8s	131.4Ken Kannard	+0.239squal +0.439s	100.2%qual 100.3%	1:51.062Liam Snyder · fastest of 20 · top 5 within 1.3s	1:52.154Liam Snyder · fastest of 19 · top 5 within 0.7s	142.6Robert Vanman	-15.683squal -15.935s	87.7%qual 87.5%
22 rule changes (GTL: 13, FP: 9)5 cars added · 5 weight · 3 induction · 2 engine · 2 suspension & brakes · 2 tyres & wheels · 1 wording · 2 othershowhide 2019-08-31 FP Request bodywork for Austin Healey Bugeye Sprite MK1 #27106other 2019-08-31 FP Request to classify the GMX5 2019 #27263cars added 2019-08-31 FP level one susp. component rule #27270suspension & brakes 2019-08-31 FP Clarification of Carb Rules - Prep 1 #27300induction 2019-08-31 FP Clarification of Carb Rules - Prep 2 #27301induction 2019-08-31 GTL Fun Cup Beetle #27334weight 2019-08-01 FP Request Miata Eligibility - 2003 #27121other 2019-08-01 GTL GTL #26960weight 2019-07-01 GTL Request CRZ wheelbase change #26896tyres & wheels 2019-05-01 GTL Request to Classify VW Fun Cup Beetle #25986cars added 2019-05-01 GTL Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine 2019-05-01 GTL Request to Classify Ligier JS2 R #26535cars added 2019-05-01 GTL Request for GTL Mazda 13B SIR Increase with Penalty #26572engine 2019-04-01 FP Rollcenter Correction Clarification #25873tyres & wheels 2019-04-01 FP Hardtops #26476wording 2019-04-01 GTL Request Ride Height Clarification #26600suspension & brakes 2019-03-01 FP Request Classification of Dodge Daytona in F Production #26259weight -150 lbs 2019-03-01 GTL Request Mazda 12a Rotary SIR Increase #26081induction 2019-03-01 GTL Request to Classify Mustang 2 Body in GTL #26222cars added 2019-01-01 GTL Request for GTL Mini Adjustments #25754weight 2019-01-01 GTL BMC thru Rover Group remove long inactive mini #25771weight 2019-01-01 GTL GTX Homologation table update #26034cars added
	Sonoma Raceway Runoffs 20182018-10-10	1:47.885Troy Ermish · fastest of 20 · top 5 within 4.5s	1:49.458Troy Ermish · fastest of 19 · top 5 within 3.6s	109.3Charles Leonard	1:47.588Joe Huffaker · fastest of 15 · top 5 within 3.0s	1:48.481Joe Huffaker · fastest of 14 · top 5 within 2.2s	109.1Joe Huffaker	-0.977squal -0.297s	99.1%qual 99.7%	1:35.040Flinn Lazier · fastest of 9 · top 5 within 1.5s	1:35.563Flinn Lazier · fastest of 9 · top 5 within 1.7s	126.8Scott Rettich	-13.895squal -12.845s	87.3%qual 88.1%
No rule changes on record between these events
	Indianapolis Motor Speedway Runoffs 20172017-09-25	1:50.331Christopher Bovis · fastest of 26 · top 5 within 1.5s	1:52.068Christopher Bovis · fastest of 20 · top 5 within 1.0s		1:52.091Eric Prill · fastest of 42 · top 5 within 1.2s	1:53.007Eric Prill · fastest of 40 · top 5 within 0.7s		+0.939squal +1.760s	100.8%qual 101.6%
No rule changes on record between these events
	Mid-Ohio Sports Car Course Runoffs 20162016-09-19	1:35.377Wilson Wright · fastest of 28 · top 5 within 1.2s	1:35.912Kyle Disque · fastest of 28 · top 5 within 1.1s		1:35.938John Walker · fastest of 33 · top 5 within 0.4s	1:36.399John Walker · fastest of 27 · top 5 within 0.3s		+0.487squal +0.561s	100.5%qual 100.6%
No rule changes on record between these events
	Daytona International Speedway Runoffs 20152015-09-21	2:11.387Jim Dentici · fastest of 10 · top 5 within 2.2s	2:13.564Jim Dentici · fastest of 9 · top 5 within 2.0s		2:11.009Kevin Ruck · fastest of 20 · top 5 within 1.6s	2:12.419Kevin Ruck · fastest of 18 · top 5 within 1.1s		-1.145squal -0.378s	99.1%qual 99.7%

By track

Track	Events	Typical % of GTL	Best	Latest
Road America	4	100.0%2 of 4 with GTL	100.0%Runoffs 2020	100.0%Runoffs 2024
Virginia International Raceway	3	100.0%	100.0%Runoffs 2019	100.0%Runoffs 2023
Indianapolis Motor Speedway	2	100.0%	100.0%Runoffs 2017	100.0%Runoffs 2021
Daytona International Speedway	1	100.0%	100.0%Runoffs 2015	100.0%Runoffs 2015
Mid-Ohio Sports Car Course	1	100.0%	100.0%Runoffs 2016	100.0%Runoffs 2016
Sonoma Raceway	1	100.0%	100.0%Runoffs 2018	100.0%Runoffs 2018

About this data

Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of GTL's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.