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BoP Lab / Classes / GTL

GTL vs F5 vs FF 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+vsF5×F600+FA+FC+FE2+vsFF×FP+FV+FX+GT1+GT2+GTL×GTX+HP+P+P2+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 56 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: GTL 100.0% of GTL Jim Dentici, Daytona International Speedway Runoffs 2015 race · F5 91.8% of GTL Ryan Mayfield, Indianapolis Motor Speedway Runoffs 2021 qualifying · FF 91.9% of GTL Jonathan Kotyk, Virginia International Raceway Runoffs 2023 race

1:402:002:2017 rule changes between Runoffs 2018 and Runoffs 201917 ▾27 rule changes between Runoffs 2019 and Runoffs 202027 ▾14 rule changes between Runoffs 2020 and Runoffs 202114 ▾9 rule changes between Runoffs 2021 and Runoffs 20229 ▾8 rule changes between Runoffs 2022 and Runoffs 20238 ▾18 rule changes between Runoffs 2023 and Runoffs 202418 ▾7 rule changes between Runoffs 2024 and Runoffs 20257 ▾3 rule changes between Runoffs 2025 and Runoffs 20263 ▾GTL race best at Runoffs 2015: 2:13.564 (Jim Dentici)GTL race best at Runoffs 2016: 1:35.912 (Kyle Disque)GTL race best at Runoffs 2017: 1:52.068 (Christopher Bovis)GTL race best at Runoffs 2018: 1:49.458 (Troy Ermish)GTL race best at Runoffs 2019: 2:07.837 (Bill Ball)GTL race best at Runoffs 2020: 2:31.601 (Peter Shadowen)GTL race best at Runoffs 2021: 1:51.952 (Scott Twomey)GTL race best at Runoffs 2022: 2:21.180 (Michael Lewis)GTL race best at Runoffs 2023: 2:11.277 (Graham Fuller)GTL race best at Runoffs 2024: 2:30.844 (Chris Bovis)GTL qualifying best at Runoffs 2015: 2:11.387 (Jim Dentici)GTL qualifying best at Runoffs 2016: 1:35.377 (Wilson Wright)GTL qualifying best at Runoffs 2017: 1:50.331 (Christopher Bovis)GTL qualifying best at Runoffs 2018: 1:47.885 (Troy Ermish)GTL qualifying best at Runoffs 2019: 2:06.997 (Peter Shadowen)GTL qualifying best at Runoffs 2020: 2:31.943 (Chris Bovis)GTL qualifying best at Runoffs 2021: 1:51.819 (Christopher Bovis)GTL qualifying best at Runoffs 2022: 2:07.789 (Peter Shadowen)GTL qualifying best at Runoffs 2023: 2:09.564 (Peter Shadowen)GTL qualifying best at Runoffs 2024: 2:30.858 (Peter Shadowen)F5 race best at Runoffs 2015: 2:03.298 (Matthew Strand)F5 race best at Runoffs 2016: 1:29.853 (Steven Thompson)F5 race best at Runoffs 2017: 1:42.860 (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 1:42.491 (David Lapham)F5 race best at Runoffs 2019: 1:57.572 (Wiley Mcmahan)F5 race best at Runoffs 2020: 2:21.391 (James Weida)F5 race best at Runoffs 2021: 1:43.140 (Sven de Vries)F5 race best at Runoffs 2022: 2:21.862 (Sven de Vries)F5 qualifying best at Runoffs 2015: 2:01.824 (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 1:28.528 (Calvin Stewart)F5 qualifying best at Runoffs 2017: 1:43.136 (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 1:41.807 (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 1:57.361 (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 2:20.954 (Calvin Stewart)F5 qualifying best at Runoffs 2021: 1:42.619 (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 1:57.689 (James Weida)FF race best at Runoffs 2015: 2:03.383 (Rick Payne)FF race best at Runoffs 2016: 1:30.133 (Neil Verhagen)FF race best at Runoffs 2017: 1:44.524 (Jonathon Kotyk)FF race best at Runoffs 2018: 1:42.049 (Jonathon Kotyk)FF race best at Runoffs 2019: 2:20.474 (Jonathan Kotyk)FF race best at Runoffs 2020: 2:24.268 (Jeffrey Bartz)FF race best at Runoffs 2021: 1:55.676 (Jonathan Kotyk)FF race best at Runoffs 2022: 2:18.358 (Jonathan Kotyk)FF race best at Runoffs 2023: 2:00.583 (Jonathan Kotyk)FF race best at Runoffs 2024: 2:22.057 (Sebastian Mateo Naranjo)FF race best at Runoffs 2025: 2:25.541 (Calvin Kautz)FF race best at Runoffs 2026: 2:23.686 (Nathan Down)FF qualifying best at Runoffs 2015: 2:02.489 (Tim Kautz)FF qualifying best at Runoffs 2016: 1:29.213 (Neil Verhagen)FF qualifying best at Runoffs 2017: 1:44.601 (Zach Holden)FF qualifying best at Runoffs 2018: 1:41.612 (Jonathon Kotyk)FF qualifying best at Runoffs 2019: 1:59.563 (Tyler O'Connor)FF qualifying best at Runoffs 2020: 2:22.916 (Simon Sikes)FF qualifying best at Runoffs 2021: 1:44.359 (Jonathan Kotyk)FF qualifying best at Runoffs 2022: 1:59.215 (Jonathan Kotyk)FF qualifying best at Runoffs 2023: 1:59.249 (Nolan Allaer)FF qualifying best at Runoffs 2024: 2:22.552 (Calvin Kautz)FF qualifying best at Runoffs 2025: 2:24.905 (Jonathan Kotyk)FF qualifying best at Runoffs 2026: 2:23.047 (David Ybarra)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Virginia International Raceway · Runoffs 2023R2023Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
GTLF5FFsolid race · dashed qualifying · slower is lower
92%94%96%98%100%17 rule changes between Runoffs 2018 and Runoffs 201917 ▾27 rule changes between Runoffs 2019 and Runoffs 202027 ▾14 rule changes between Runoffs 2020 and Runoffs 202114 ▾9 rule changes between Runoffs 2021 and Runoffs 20229 ▾8 rule changes between Runoffs 2022 and Runoffs 20238 ▾18 rule changes between Runoffs 2023 and Runoffs 202418 ▾7 rule changes between Runoffs 2024 and Runoffs 20257 ▾3 rule changes between Runoffs 2025 and Runoffs 20263 ▾GTL race best at Runoffs 2015: 100.0% of GTL's (Jim Dentici)GTL race best at Runoffs 2016: 100.0% of GTL's (Kyle Disque)GTL race best at Runoffs 2017: 100.0% of GTL's (Christopher Bovis)GTL race best at Runoffs 2018: 100.0% of GTL's (Troy Ermish)GTL race best at Runoffs 2019: 100.0% of GTL's (Bill Ball)GTL race best at Runoffs 2020: 100.0% of GTL's (Peter Shadowen)GTL race best at Runoffs 2021: 100.0% of GTL's (Scott Twomey)GTL race best at Runoffs 2022: 100.0% of GTL's (Michael Lewis)GTL race best at Runoffs 2023: 100.0% of GTL's (Graham Fuller)GTL race best at Runoffs 2024: 100.0% of GTL's (Chris Bovis)GTL qualifying best at Runoffs 2015: 100.0% of GTL's (Jim Dentici)GTL qualifying best at Runoffs 2016: 100.0% of GTL's (Wilson Wright)GTL qualifying best at Runoffs 2017: 100.0% of GTL's (Christopher Bovis)GTL qualifying best at Runoffs 2018: 100.0% of GTL's (Troy Ermish)GTL qualifying best at Runoffs 2019: 100.0% of GTL's (Peter Shadowen)GTL qualifying best at Runoffs 2020: 100.0% of GTL's (Chris Bovis)GTL qualifying best at Runoffs 2021: 100.0% of GTL's (Christopher Bovis)GTL qualifying best at Runoffs 2022: 100.0% of GTL's (Peter Shadowen)GTL qualifying best at Runoffs 2023: 100.0% of GTL's (Peter Shadowen)GTL qualifying best at Runoffs 2024: 100.0% of GTL's (Peter Shadowen)F5 race best at Runoffs 2015: 92.3% of GTL's (Matthew Strand)F5 race best at Runoffs 2016: 93.7% of GTL's (Steven Thompson)F5 race best at Runoffs 2017: 91.8% of GTL's (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 93.6% of GTL's (David Lapham)F5 race best at Runoffs 2019: 92.0% of GTL's (Wiley Mcmahan)F5 race best at Runoffs 2020: 93.3% of GTL's (James Weida)F5 race best at Runoffs 2021: 92.1% of GTL's (Sven de Vries)F5 race best at Runoffs 2022: 100.5% of GTL's (Sven de Vries)F5 qualifying best at Runoffs 2015: 92.7% of GTL's (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 92.8% of GTL's (Calvin Stewart)F5 qualifying best at Runoffs 2017: 93.5% of GTL's (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 94.4% of GTL's (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 92.4% of GTL's (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 92.8% of GTL's (Calvin Stewart)F5 qualifying best at Runoffs 2021: 91.8% of GTL's (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 92.1% of GTL's (James Weida)FF race best at Runoffs 2015: 92.4% of GTL's (Rick Payne)FF race best at Runoffs 2016: 94.0% of GTL's (Neil Verhagen)FF race best at Runoffs 2017: 93.3% of GTL's (Jonathon Kotyk)FF race best at Runoffs 2018: 93.2% of GTL's (Jonathon Kotyk)Off the chart: FF race best at Runoffs 2019: 109.9% of GTL's (Jonathan Kotyk)FF race best at Runoffs 2020: 95.2% of GTL's (Jeffrey Bartz)Off the chart: FF race best at Runoffs 2021: 103.3% of GTL's (Jonathan Kotyk)FF race best at Runoffs 2022: 98.0% of GTL's (Jonathan Kotyk)FF race best at Runoffs 2023: 91.9% of GTL's (Jonathan Kotyk)FF race best at Runoffs 2024: 94.2% of GTL's (Sebastian Mateo Naranjo)FF qualifying best at Runoffs 2015: 93.2% of GTL's (Tim Kautz)FF qualifying best at Runoffs 2016: 93.5% of GTL's (Neil Verhagen)FF qualifying best at Runoffs 2017: 94.8% of GTL's (Zach Holden)FF qualifying best at Runoffs 2018: 94.2% of GTL's (Jonathon Kotyk)FF qualifying best at Runoffs 2019: 94.1% of GTL's (Tyler O'Connor)FF qualifying best at Runoffs 2020: 94.1% of GTL's (Simon Sikes)FF qualifying best at Runoffs 2021: 93.3% of GTL's (Jonathan Kotyk)FF qualifying best at Runoffs 2022: 93.3% of GTL's (Jonathan Kotyk)FF qualifying best at Runoffs 2023: 92.0% of GTL's (Nolan Allaer)FF qualifying best at Runoffs 2024: 94.5% of GTL's (Calvin Kautz)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Virginia International Raceway · Runoffs 2023R2023Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
GTLF5FFsolid 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
EventGTLF5FF
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 20262026-09-282:23.047David Ybarra · fastest of 20 · top 5 within 1.4s-1.858s (-1.28%)2:23.686Nathan Down · fastest of 20 · top 5 within 1.6s-1.855s (-1.27%)138.9Tazio Stefanelli+0.5 mph (+0.3%)
3 rule changes (GTL: 1, FF: 2)1 engine · 1 removed · 1 tyres & wheelsshowhide
  • FF Clarification in FF Kent 1600 Compression Ratio Paragraph #40293engine
  • GTL Remove GT3U from GCR as it is now in STU #39862removed
  • FF Formula F Alternative Tire Rule Proposed Clarifications #39281tyres & wheels
Road America Runoffs 20252025-09-292:24.905Jonathan Kotyk · fastest of 17 · top 5 within 1.1s+2.353s (+1.65%)2:25.541Calvin Kautz · fastest of 16 · top 5 within 0.5s+3.484s (+2.45%)138.4Tazio Stefanelli-2.3 mph (-1.6%)
7 rule changes (GTL: 3, FF: 4)3 weight · 2 tyres & wheels · 1 aero · 1 engineshowhide
  • FF Page 228, FF tire rule 9.1.1.10.e #38251tyres & wheels
  • FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change #37802tyres & wheels
  • GTL Correct language regarding OEM Areo Devices #37137aero
  • FF Change FF/FC Weight with Sequential Gearbox #36651weight
  • FF Alternative Oversize Honda Fit Pistons #37064weight
  • GTL G16E-GTS Fuel Injection Spec Line Change #36588engine
  • GTL GTL Alternate Weight and Choke Option for L16 engine #36653weight
Road America Runoffs 20242024-10-012:30.858Peter 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%)2:22.552Calvin Kautz · fastest of 13 · top 5 within 1.1s-0.364s (-0.25%)2:22.057Sebastian Mateo Naranjo · fastest of 13 · top 5 within 0.6s-2.211s (-1.53%)140.7Calvin Kautz+2.6 mph (+1.9%)-8.787squal -8.306s94.2%qual 94.5%
18 rule changes (GTL: 16, FF: 2)6 engine · 5 cars added · 3 weight · 2 induction · 1 aero · 1 othershowhide
  • FF Update to FF EGR Blanking Plate Rule #36633engine
  • GTL Request to Include Toyota GR86 in GTL #36324cars added
  • GTL Inclusion of Modified Spec Miata for GTL competition #36325cars added
  • GTL Include Mazda MX5 RF 2017- in GTL #36428cars added
  • GTL Add GTL to GT3 choke option line. #36236induction
  • GTL Request for Spec Line 1010 Reconsideration #35009weight +300 lbs
  • GTL Allow 34 mm chokes for the Datsun 510 #35661induction +50 lbs
  • GTL Rear Blade Spoiler Clarification #35261aero
  • GTL GT Direct Injection allowance and rules #35437engine
  • GTL GT2/3 remove Direction Injection not allowed in Spec line notes #35439engine
  • FF Honda Fit Oversize Piston Rings #35305other
  • GTL Rotary Engine 12A Rotor Housings #35131engine
  • GTL Request to Include Toyota GR86 in GTL #35198cars added
  • GTL Errors and Omissions, GTL engines & Cars #35226engine
  • GTL Small Engines in GT Lite #34842engine
  • GTL Request to Classify Honda Fit body in GTL #35020cars added
  • GTL Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules #34453weight
  • GTL Weight for Nissan Sentra/200SX A 1400's #34918weight -50 lbs
Virginia International Raceway Runoffs 20232023-09-232:09.564Peter 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%)1:59.249Nolan Allaer · fastest of 8 · top 5 within 2.8s+0.034s (+0.03%)2:00.583Jonathan Kotyk · fastest of 8 · top 5 within 0.4s-17.775s (-12.85%)138.4Calvin Kautz+0.1 mph (+0.1%)-10.694squal -10.315s91.9%qual 92.0%
8 rule changes (GTL: 7, FF: 1)4 engine · 2 weight · 1 cars added · 1 inductionshowhide
  • GTL Please classify Fields Cardinal V8 #33784cars added
  • FF Add Fast Forward Part Numbers for Honda Fit Engine #33752engine
  • GTL Toyota 4Y Engine Classification Request #33562engine
  • GTL Toyota 4A-F and 4A-FE 1.6L DOHC 16V Engine Request #33415engine
  • GTL Fiat HP Limited Prep X1/9 Weight in GTL #33297weight
  • GTL GT2 (TA2)/GTA Part Number Update #33315induction
  • GTL Request to add Ford Festiva to GTL #33335weight
  • GTL Engine Request #33064engine
Virginia International Raceway Runoffs 20222022-09-242:07.789Peter 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%)1:57.689James Weida · fastest of 11 · top 5 within 3.9s+0.328s (+0.28%)2:21.862Sven de Vries · fastest of 10 · top 5 within 14.3s+24.290s (+20.66%)142.9Calvin Stewart+0.1 mph (+0.1%)+0.682squal -10.100s100.5%qual 92.1%1:59.215Jonathan Kotyk · fastest of 13 · top 5 within 1.2s-0.348s (-0.29%)2:18.358Jonathan Kotyk · fastest of 12 · top 5 within 2.4s-2.116s (-1.51%)138.3Tim Kautz+2.2 mph (+1.6%)-2.822squal -8.574s98.0%qual 93.3%
9 rule changes (GTL: 3, F5: 6)2 cars added · 2 engine · 2 induction · 1 suspension & brakes · 2 othershowhide
  • F5 Intake Boots Correction #33028induction
  • GTL Tail lights on all GT category race cars. #32799suspension & brakes
  • F5 Ensure availability of ECU for Rotax engines #32695engine
  • F5 Clarify stepped exhaust header references #32743engine
  • F5 593 carb boot availability and oil pump clarification #32527induction
  • F5 E&O class name #32194other
  • GTL Request to Classify Ginetta G40 in GTL #31599cars added
  • F5 Data Box Mounting Plate #31638other
  • GTL Request car classification #31032cars added
Indianapolis Motor Speedway Runoffs 20212021-09-251:51.819Christopher 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 Linn1:42.619Ryan Mayfield · fastest of 22 · top 5 within 1.6s-0.517s (-0.50%)1:43.140Sven de Vries · fastest of 20 · top 5 within 1.7s+0.280s (+0.27%)144.4James Weida-8.812squal -9.200s92.1%qual 91.8%1:44.359Jonathan Kotyk · fastest of 24 · top 5 within 1.1s-0.242s (-0.23%)1:55.676Jonathan Kotyk · fastest of 23 · top 5 within 1.8s+11.152s (+10.67%)141.6Nicholas Sheppard+3.724squal -7.460s103.3%qual 93.3%
14 rule changes (GTL: 8, F5: 3, FF: 3)4 engine · 2 tyres & wheels · 2 weight · 1 cars added · 1 induction · 3 wording · 1 othershowhide
  • F5 Clarify allowable assisted shifting systems #30871wording
  • F5 Request to correct terminology #30976tyres & wheels
  • GTL Request to Update GTA Obsolete Part Numbers #30615wording
  • GTL Request clarification for the Honda B18a,bVS B18c #30482weight
  • GTL Request to Allow Hood Bulge on Nissan B13 Sentra #30504other
  • GTL Request BMW E21 Classing #30582tyres & wheels
  • F5 Request to Allow Rotax 593 HO Engine #30712engine
  • FF Kent crankshaft clarification #30426wording
  • GTL Request for Help for Mazda 12A #29754weight +50 lbs
  • GTL Request LP HP Fiat X1/9 & Bertone 1500 to GTL #30058cars added
  • GTL Please Add GTL Nissan 1.8L Engine MRA8DE #29805engine
  • GTL Increase 13b SIR size #29867induction
  • FF Allow Optional Coolant Bleed Line to Correct a Known Problem #29673engine
  • FF Clarification regarding Honda LC1 ECU implementation date #29684engine
Road America Runoffs 20202020-10-022:31.943Chris Bovis · fastest of 14 · top 5 within 6.3s2:31.601Peter Shadowen · fastest of 14 · top 5 within 7.2s131.4Peter Shadowen2:20.954Calvin Stewart · fastest of 16 · top 5 within 1.8s2:21.391James Weida · fastest of 14 · top 5 within 1.5s143.2Aaron Ellis-10.210squal -10.989s93.3%qual 92.8%2:22.916Simon Sikes · fastest of 14 · top 5 within 1.6s2:24.268Jeffrey Bartz · fastest of 14 · top 5 within 0.4s138.1Jeffrey Bartz-7.333squal -9.027s95.2%qual 94.1%
27 rule changes (GTL: 17, F5: 6, FF: 4)7 aero · 5 engine · 5 induction · 3 cars added · 2 weight · 1 tyres & wheels · 4 othershowhide
  • F5 Request to Update Suzuki Engine Years for F500 #29453engine
  • GTL GT Category Wording #29193induction
  • FF Clarification regarding Honda LC1 ECU implementation #29135engine
  • GTL Request to change the Mazda 13b restrictor size #28518induction +175 lbs
  • F5 Request for Cockpit Adjustment of External Jetting Devices #28359other
  • F5 Two Stroke Motors (reply to #28359 WDYT) #28816engine
  • F5 Re letter requesting driver adjustable carb mixture #28840other
  • F5 #28359 WDYT Request for Cockpit Adjustment #28875other
  • GTL Request to classify 1999-2007 Toyota MR2 Spyder body #28870cars added
  • GTL TA2 Gurney flap wicker clarification #28874aero
  • GTL STO Gurney flap wicker clarification #28883aero
  • GTL GT Gurney flap wicker clarification #28909aero
  • GTL Mazda 13b Restrictor Size Follow up to Letter 28518 #29015induction
  • GTL Stall Test #28709induction
  • GTL GTL Wing Rule #28754aero
  • FF E&O FF Kent Engine alternator language #28204engine
  • FF Honda Racing HPD low cost ECU proposal #27563engine
  • FF Update rain tire designation #28443tyres & wheels
  • GTL Wing Mounting Upright Size #27641aero
  • GTL Wing Mounting Upright Size #27641aero
  • GTL GTL wing end plates addition #28243aero
  • GTL Clarification to letter #27406 #28309weight -50 lbs
  • GTL Windshield Clips #27323other
  • F5 Change 600cc restrictor size #27883induction
  • GTL Request Factory Five Daytona coupe classification #26308cars added
  • GTL Request to Classify the MK1 two door Jetta #27648cars added
  • GTL 88-91 Honda CRX Spec Line Correction #27233weight
Virginia International Raceway Runoffs 20192019-10-052:06.997Peter Shadowen · fastest of 19 · top 5 within 4.0s2:07.837Bill Ball · fastest of 18 · top 5 within 4.2s131.1Peter Shadowen1:57.361Wiley Mcmahan · fastest of 15 · top 5 within 3.8s1:57.572Wiley Mcmahan · fastest of 15 · top 5 within 4.0s142.8Eric McRee-10.265squal -9.636s92.0%qual 92.4%1:59.563Tyler O'Connor · fastest of 14 · top 5 within 1.4s2:20.474Jonathan Kotyk · fastest of 14 · top 5 within 6.3s136.2Derek Ketchie+12.637squal -7.434s109.9%qual 94.1%
17 rule changes (GTL: 13, F5: 1, FF: 3)5 weight · 4 cars added · 4 engine · 2 induction · 1 suspension & brakes · 1 tyres & wheelsshowhide
  • F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbs
  • GTL Fun Cup Beetle #27334weight
  • GTL GTL #26960weight
  • GTL Request CRZ wheelbase change #26896tyres & wheels
  • GTL Request to Classify VW Fun Cup Beetle #25986cars added
  • GTL Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine
  • GTL Request to Classify Ligier JS2 R #26535cars added
  • GTL Request for GTL Mazda 13B SIR Increase with Penalty #26572engine
  • GTL Request Ride Height Clarification #26600suspension & brakes
  • GTL Request Mazda 12a Rotary SIR Increase #26081induction
  • GTL Request to Classify Mustang 2 Body in GTL #26222cars added
  • FF Request for Oversize Honda Fit Pistons #25810engine
  • FF Heat Shield - Fit Intake #26102induction
  • FF Request catch cans/tanks clarification #26158engine
  • GTL Request for GTL Mini Adjustments #25754weight
  • GTL BMC thru Rover Group remove long inactive mini #25771weight
  • GTL GTX Homologation table update #26034cars added
Sonoma Raceway Runoffs 20182018-10-101:47.885Troy Ermish · fastest of 20 · top 5 within 4.5s1:49.458Troy Ermish · fastest of 19 · top 5 within 3.6s109.3Charles Leonard1:41.807Jeff Jorgenson · fastest of 5 · top 5 within 6.6s1:42.491David Lapham · fastest of 5 · top 5 within 9.5s113.3David Lapham-6.967squal -6.078s93.6%qual 94.4%1:41.612Jonathon Kotyk · fastest of 22 · top 5 within 1.7s1:42.049Jonathon Kotyk · fastest of 22 · top 5 within 1.3s115.7Denny Renfrow-7.409squal -6.273s93.2%qual 94.2%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:50.331Christopher Bovis · fastest of 26 · top 5 within 1.5s1:52.068Christopher Bovis · fastest of 20 · top 5 within 1.0s1:43.136Wiley Clinton McMahan · fastest of 38 · top 5 within 1.4s1:42.860Wiley Clinton McMahan · fastest of 37 · top 5 within 1.6s-9.208squal -7.195s91.8%qual 93.5%1:44.601Zach Holden · fastest of 36 · top 5 within 1.2s1:44.524Jonathon Kotyk · fastest of 36 · top 5 within 0.5s-7.544squal -5.730s93.3%qual 94.8%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:35.377Wilson Wright · fastest of 28 · top 5 within 1.2s1:35.912Kyle Disque · fastest of 28 · top 5 within 1.1s1:28.528Calvin Stewart · fastest of 14 · top 5 within 3.9s1:29.853Steven Thompson · fastest of 12 · top 5 within 4.5s-6.059squal -6.849s93.7%qual 92.8%1:29.213Neil Verhagen · fastest of 14 · top 5 within 2.1s1:30.133Neil Verhagen · fastest of 14 · top 5 within 1.4s-5.779squal -6.164s94.0%qual 93.5%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:11.387Jim Dentici · fastest of 10 · top 5 within 2.2s2:13.564Jim Dentici · fastest of 9 · top 5 within 2.0s2:01.824W. Clint McMahan · fastest of 16 · top 5 within 3.0s2:03.298Matthew Strand · fastest of 15 · top 5 within 4.9s-10.266squal -9.563s92.3%qual 92.7%2:02.489Tim Kautz · fastest of 25 · top 5 within 1.1s2:03.383Rick Payne · fastest of 22 · top 5 within 0.8s-10.181squal -8.898s92.4%qual 93.2%

By track

TrackEvents Typical % of GTL Best Latest 
Road America4100.0%2 of 4 with GTL100.0%Runoffs 2020100.0%Runoffs 2024
Virginia International Raceway3100.0%100.0%Runoffs 2019100.0%Runoffs 2023
Indianapolis Motor Speedway2100.0%100.0%Runoffs 2017100.0%Runoffs 2021
Daytona International Speedway1100.0%100.0%Runoffs 2015100.0%Runoffs 2015
Mid-Ohio Sports Car Course1100.0%100.0%Runoffs 2016100.0%Runoffs 2016
Sonoma Raceway1100.0%100.0%Runoffs 2018100.0%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.