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BoP Lab / Classes / AS

AS vs GTL vs FM vs T4 pace at every track

Lap times across years say as much about the weather as the class. % of AS is each class's best lap as a share of AS'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: remove one to add another)
AS×B-SpecEPFAFCFE2FFvsFM×FPFVFXGT1GT2vsGTL×GTXHPPP2SMSMXSRF3STLSTUT1T2T3vsT4×Show 49 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: AS 100.0% of AS Andy McDermid, Daytona International Speedway Runoffs 2015 race · GTL 99.2% of AS Troy Ermish, Sonoma Raceway Runoffs 2018 race · FM 88.7% of AS Bryce Cornet, Sonoma Raceway Runoffs 2018 race · T4 102.3% of AS Alex Lozano, Road America Runoffs 2025 race

1:402:002:202:4032 rule changes between Runoffs 2018 and Runoffs 201932 ▾58 rule changes between Runoffs 2019 and Runoffs 202058 ▾42 rule changes between Runoffs 2020 and Runoffs 202142 ▾41 rule changes between Runoffs 2021 and Runoffs 202241 ▾31 rule changes between Runoffs 2022 and Runoffs 202331 ▾55 rule changes between Runoffs 2023 and Runoffs 202455 ▾43 rule changes between Runoffs 2024 and Runoffs 202543 ▾40 rule changes between Runoffs 2025 and Runoffs 202640 ▾AS race best at Runoffs 2015: 2:02.922 (Andy McDermid)AS race best at Runoffs 2016: 1:33.424 (Edward Hosni)AS race best at Runoffs 2017: 1:51.507 (Bryan Long)AS race best at Runoffs 2018: 1:50.345 (John Heinricy)AS race best at Runoffs 2019: 2:03.900 (James Jost)AS race best at Runoffs 2020: 2:27.668 (Gregory Eaton)AS race best at Runoffs 2021: 1:50.606 (Gregory Eaton)AS race best at Runoffs 2022: 2:04.578 (Gregory Eaton)AS race best at Runoffs 2023: 2:04.120 (Gregory Eaton)AS race best at Runoffs 2024: 2:26.429 (Gregory Eaton)AS race best at Runoffs 2025: 2:29.232 (Gregory Eaton)AS race best at Runoffs 2026: 2:28.471 (Andrew McDermid)AS qualifying best at Runoffs 2015: 2:01.746 (Tom Sloe)AS qualifying best at Runoffs 2016: 1:30.651 (Tom Sloe)AS qualifying best at Runoffs 2017: 1:45.220 (James Jost)AS qualifying best at Runoffs 2018: 1:47.782 (Andrew McDermid)AS qualifying best at Runoffs 2019: 2:02.938 (Gregory Eaton)AS qualifying best at Runoffs 2020: 2:27.045 (Gregory Eaton)AS qualifying best at Runoffs 2021: 1:50.427 (Drew Cattell)AS qualifying best at Runoffs 2022: 2:02.162 (Kurt Rezzetano)AS qualifying best at Runoffs 2023: 2:03.082 (Daniel Richardson)AS qualifying best at Runoffs 2024: 2:26.578 (Gregory Eaton)AS qualifying best at Runoffs 2025: 2:26.792 (Andrew McDermid)AS qualifying best at Runoffs 2026: 2:26.911 (Andrew McDermid)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)FM race best at Runoffs 2015: 1:58.029 (Joseph Burton-Harris)FM race best at Runoffs 2016: 1:27.922 (Jacob Loomis)FM race best at Runoffs 2017: 1:41.146 (Jarret Voorhies)FM race best at Runoffs 2018: 1:37.909 (Bryce Cornet)FM race best at Runoffs 2019: 2:15.816 (Bryce Cornet)FM qualifying best at Runoffs 2015: 1:57.804 (Joseph Burton-Harris)FM qualifying best at Runoffs 2016: 1:26.043 (Jacob Loomis)FM qualifying best at Runoffs 2017: 1:41.231 (Jarret Voorhies)FM qualifying best at Runoffs 2018: 1:37.598 (Bryce Cornet)FM qualifying best at Runoffs 2019: 1:55.124 (Bryce Cornet)T4 race best at Runoffs 2015: 2:15.994 (Philip Royle)T4 race best at Runoffs 2016: 1:40.397 (Oscar Jackson)T4 race best at Runoffs 2017: 1:56.923 (Oscar Jackson)T4 race best at Runoffs 2018: 1:54.030 (John Heinricy)T4 race best at Runoffs 2019: 2:10.959 (Nick Leverone)T4 race best at Runoffs 2020: 2:37.881 (Chi Ho)T4 race best at Runoffs 2021: 1:55.929 (John Heinricy)T4 race best at Runoffs 2022: 2:25.443 (John Heinricy)T4 race best at Runoffs 2023: 2:11.962 (Devin Anderson)T4 race best at Runoffs 2024: 2:34.208 (Alex Lozano)T4 race best at Runoffs 2025: 2:32.633 (Alex Lozano)T4 race best at Runoffs 2026: 2:35.757 (Matt Spicuzzi)T4 qualifying best at Runoffs 2015: 2:15.886 (Philip Royle)T4 qualifying best at Runoffs 2016: 1:38.813 (Jonathan Yanca)T4 qualifying best at Runoffs 2017: 1:56.566 (Oscar Jackson)T4 qualifying best at Runoffs 2018: 1:52.339 (Gresham Wagner)T4 qualifying best at Runoffs 2019: 2:11.257 (John Heinricy)T4 qualifying best at Runoffs 2020: 2:37.403 (John Heinricy)T4 qualifying best at Runoffs 2021: 1:54.397 (Stephen Blethen)T4 qualifying best at Runoffs 2022: 2:09.577 (John Heinricy)T4 qualifying best at Runoffs 2023: 2:10.514 (Devin Anderson)T4 qualifying best at Runoffs 2024: 2:34.430 (Matt Spicuzzi)T4 qualifying best at Runoffs 2025: 2:32.956 (Matt Spicuzzi)T4 qualifying best at Runoffs 2026: 2:35.876 (Matt Spicuzzi)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
ASGTLFMT4solid race · dashed qualifying · slower is lower
90%95%100%105%110%32 rule changes between Runoffs 2018 and Runoffs 201932 ▾58 rule changes between Runoffs 2019 and Runoffs 202058 ▾42 rule changes between Runoffs 2020 and Runoffs 202142 ▾41 rule changes between Runoffs 2021 and Runoffs 202241 ▾31 rule changes between Runoffs 2022 and Runoffs 202331 ▾55 rule changes between Runoffs 2023 and Runoffs 202455 ▾43 rule changes between Runoffs 2024 and Runoffs 202543 ▾40 rule changes between Runoffs 2025 and Runoffs 202640 ▾AS race best at Runoffs 2015: 100.0% of AS's (Andy McDermid)AS race best at Runoffs 2016: 100.0% of AS's (Edward Hosni)AS race best at Runoffs 2017: 100.0% of AS's (Bryan Long)AS race best at Runoffs 2018: 100.0% of AS's (John Heinricy)AS race best at Runoffs 2019: 100.0% of AS's (James Jost)AS race best at Runoffs 2020: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2021: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2022: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2023: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2024: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2025: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2026: 100.0% of AS's (Andrew McDermid)AS qualifying best at Runoffs 2015: 100.0% of AS's (Tom Sloe)AS qualifying best at Runoffs 2016: 100.0% of AS's (Tom Sloe)AS qualifying best at Runoffs 2017: 100.0% of AS's (James Jost)AS qualifying best at Runoffs 2018: 100.0% of AS's (Andrew McDermid)AS qualifying best at Runoffs 2019: 100.0% of AS's (Gregory Eaton)AS qualifying best at Runoffs 2020: 100.0% of AS's (Gregory Eaton)AS qualifying best at Runoffs 2021: 100.0% of AS's (Drew Cattell)AS qualifying best at Runoffs 2022: 100.0% of AS's (Kurt Rezzetano)AS qualifying best at Runoffs 2023: 100.0% of AS's (Daniel Richardson)AS qualifying best at Runoffs 2024: 100.0% of AS's (Gregory Eaton)AS qualifying best at Runoffs 2025: 100.0% of AS's (Andrew McDermid)AS qualifying best at Runoffs 2026: 100.0% of AS's (Andrew McDermid)GTL race best at Runoffs 2015: 108.7% of AS's (Jim Dentici)GTL race best at Runoffs 2016: 102.7% of AS's (Kyle Disque)GTL race best at Runoffs 2017: 100.5% of AS's (Christopher Bovis)GTL race best at Runoffs 2018: 99.2% of AS's (Troy Ermish)GTL race best at Runoffs 2019: 103.2% of AS's (Bill Ball)GTL race best at Runoffs 2020: 102.7% of AS's (Peter Shadowen)GTL race best at Runoffs 2021: 101.2% of AS's (Scott Twomey)GTL race best at Runoffs 2022: 113.3% of AS's (Michael Lewis)GTL race best at Runoffs 2023: 105.8% of AS's (Graham Fuller)GTL race best at Runoffs 2024: 103.0% of AS's (Chris Bovis)GTL qualifying best at Runoffs 2015: 107.9% of AS's (Jim Dentici)GTL qualifying best at Runoffs 2016: 105.2% of AS's (Wilson Wright)GTL qualifying best at Runoffs 2017: 104.9% of AS's (Christopher Bovis)GTL qualifying best at Runoffs 2018: 100.1% of AS's (Troy Ermish)GTL qualifying best at Runoffs 2019: 103.3% of AS's (Peter Shadowen)GTL qualifying best at Runoffs 2020: 103.3% of AS's (Chris Bovis)GTL qualifying best at Runoffs 2021: 101.3% of AS's (Christopher Bovis)GTL qualifying best at Runoffs 2022: 104.6% of AS's (Peter Shadowen)GTL qualifying best at Runoffs 2023: 105.3% of AS's (Peter Shadowen)GTL qualifying best at Runoffs 2024: 102.9% of AS's (Peter Shadowen)FM race best at Runoffs 2015: 96.0% of AS's (Joseph Burton-Harris)FM race best at Runoffs 2016: 94.1% of AS's (Jacob Loomis)FM race best at Runoffs 2017: 90.7% of AS's (Jarret Voorhies)FM race best at Runoffs 2018: 88.7% of AS's (Bryce Cornet)FM race best at Runoffs 2019: 109.6% of AS's (Bryce Cornet)FM qualifying best at Runoffs 2015: 96.8% of AS's (Joseph Burton-Harris)FM qualifying best at Runoffs 2016: 94.9% of AS's (Jacob Loomis)FM qualifying best at Runoffs 2017: 96.2% of AS's (Jarret Voorhies)FM qualifying best at Runoffs 2018: 90.6% of AS's (Bryce Cornet)FM qualifying best at Runoffs 2019: 93.6% of AS's (Bryce Cornet)T4 race best at Runoffs 2015: 110.6% of AS's (Philip Royle)T4 race best at Runoffs 2016: 107.5% of AS's (Oscar Jackson)T4 race best at Runoffs 2017: 104.9% of AS's (Oscar Jackson)T4 race best at Runoffs 2018: 103.3% of AS's (John Heinricy)T4 race best at Runoffs 2019: 105.7% of AS's (Nick Leverone)T4 race best at Runoffs 2020: 106.9% of AS's (Chi Ho)T4 race best at Runoffs 2021: 104.8% of AS's (John Heinricy)Off the chart: T4 race best at Runoffs 2022: 116.7% of AS's (John Heinricy)T4 race best at Runoffs 2023: 106.3% of AS's (Devin Anderson)T4 race best at Runoffs 2024: 105.3% of AS's (Alex Lozano)T4 race best at Runoffs 2025: 102.3% of AS's (Alex Lozano)T4 race best at Runoffs 2026: 104.9% of AS's (Matt Spicuzzi)T4 qualifying best at Runoffs 2015: 111.6% of AS's (Philip Royle)T4 qualifying best at Runoffs 2016: 109.0% of AS's (Jonathan Yanca)T4 qualifying best at Runoffs 2017: 110.8% of AS's (Oscar Jackson)T4 qualifying best at Runoffs 2018: 104.2% of AS's (Gresham Wagner)T4 qualifying best at Runoffs 2019: 106.8% of AS's (John Heinricy)T4 qualifying best at Runoffs 2020: 107.0% of AS's (John Heinricy)T4 qualifying best at Runoffs 2021: 103.6% of AS's (Stephen Blethen)T4 qualifying best at Runoffs 2022: 106.1% of AS's (John Heinricy)T4 qualifying best at Runoffs 2023: 106.0% of AS's (Devin Anderson)T4 qualifying best at Runoffs 2024: 105.4% of AS's (Matt Spicuzzi)T4 qualifying best at Runoffs 2025: 104.2% of AS's (Matt Spicuzzi)T4 qualifying best at Runoffs 2026: 106.1% of AS's (Matt Spicuzzi)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
ASGTLFMT4solid race · dashed qualifying · each class's best lap as a share of AS's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventASGTLFMT4
Qual best Race best Trap Qual best Race best Trap vs AS % of AS Qual best Race best Trap vs AS % of AS Qual best Race best Trap vs AS % of AS 
Road America Runoffs 20262026-09-282:26.911Andrew McDermid · fastest of 8 · top 5 within 3.4s+0.119s (+0.08%)2:28.471Andrew McDermid · fastest of 8 · top 5 within 2.4s-0.761s (-0.51%)151.0Andrew McDermid-0.6 mph (-0.4%)2:35.876Matt Spicuzzi · fastest of 12 · top 5 within 2.4s+2.920s (+1.91%)2:35.757Matt Spicuzzi · fastest of 12 · top 5 within 2.7s+3.124s (+2.05%)127.6Matt Spicuzzi-6.0 mph (-4.5%)+7.286squal +8.965s104.9%qual 106.1%
40 rule changes (AS: 13, GTL: 1, T4: 26)10 weight · 5 cars added · 5 suspension & brakes · 4 induction · 4 tyres & wheels · 3 engine · 3 removed · 6 othershowhide
  • AS 2016+ Camaro Spec Line Full Prep #39646tyres & wheels
  • AS Consideration of Pirelli P Zero Trofeo Track for AS Competition #40495tyres & wheels
  • T4 02-06 R53 Mini Cooper Hotchkins Rear Camber Arms #40677suspension & brakes
  • AS Change in 9.1.6.D.4.d.5 in Suspension Mounting Points #40094other
  • AS Re-Add 4.6L 4v 96-04 Mustang Cobra #40239weight
  • AS Errors and Omissions #40532weight
  • T4 Is it time? #40653cars added
  • T4 Combine T4 BRZ/86/FRS generations #40656weight
  • T4 Dodge Neon DOHC Weight #40329weight
  • AS Clarification for LM7 Holley Carburetor #40167engine
  • T4 SPB In T4 #39973other
  • T4 02-06 Mini Cooper S #40106weight -50 lbs
  • T4 02-06 Mini Cooper S Fuel #40107other
  • T4 Shock error #40176suspension & brakes
  • T4 Max Tire Sizes #40183tyres & wheels
  • T4 2003 Honda Civic Si Classification #39999cars added
  • AS Header Information Update for EFI Engine Build Sheets #39886engine
  • AS Errors and Omissions #39933weight
  • T4 16-24 ND MX5 T4 #39934suspension & brakes
  • AS Re-Organization of AS Spec lines for 2026 #39887removed
  • GTL Remove GT3U from GCR as it is now in STU #39862removed
  • T4 ND MX-5 Spec Line Rewrite Request #39802weight -100 lbs
  • T4 4.0 Mustang spec line cleanup #39831induction
  • AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request #39055weight
  • T4 T4 and T3 Feedback #39230removed
  • T4 T4 Mustang 4.0 #39489induction
  • T4 Allow Alt Bushing Material in Toe Links #39607suspension & brakes
  • AS Restrictor Plate Change for Gen 2 Ford Coyote Engine #39501induction
  • T4 Alternate Placement of Fuse Panel and Electronics Request #39370other
  • T4 Clarify T4 Brake Rotor Allowance #39503suspension & brakes
  • AS 1994 Mustang Spec Line Request #39104engine
  • T4 Classing 1995-99 Dodge Neon SOHC #39285cars added
  • AS Cadillac CTS-V BOP Weight Change #38640weight -50 lbs
  • T4 02-06 Mini Cooper Gear Ratios #38966other
  • T4 Reinstatement of the 2005-2010 Cobalt into T4 #38987cars added
  • T4 Request to Classify Mercedes C230K #39080cars added
  • T4 ND Gearset Request for T4 #39166other
  • T4 E&O wheel size on ND #39168tyres & wheels
  • T4 ND Spec Lines Wrong PT#'s #39170weight
  • T4 Touring 4 Post-Runoffs BOP Adjustments and Changes #39251induction -100 lbs
Road America Runoffs 20252025-09-292:26.792Andrew McDermid · fastest of 11 · top 5 within 3.9s+0.214s (+0.15%)2:29.232Gregory Eaton · fastest of 10 · top 5 within 4.0s+2.803s (+1.91%)151.5Andrew McDermid+1.9 mph (+1.3%)2:32.956Matt Spicuzzi · fastest of 10 · top 5 within 3.8s-1.474s (-0.95%)2:32.633Alex Lozano · fastest of 10 · top 5 within 4.3s-1.575s (-1.02%)133.7Alex Lozano+4.4 mph (+3.4%)+3.401squal +6.164s102.3%qual 104.2%
43 rule changes (AS: 11, GTL: 3, T4: 29)10 weight · 8 engine · 5 cars added · 4 tyres & wheels · 3 induction · 2 aero · 2 suspension & brakes · 2 wording · 7 othershowhide
  • T4 Incorrect Touring Heading #38451wording
  • AS RE: Previous Letter 37695 Update #38245weight -75 lbs
  • T4 Allow B-Spec cars to run in T4 #38439other
  • AS Errors and Omissions #38234engine
  • T4 T4 Mustang #38059weight -100 lbs
  • T4 SSC tire allowance #38216tyres & wheels
  • AS Errors and Omission #38055induction
  • AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO #38197engine
  • T4 Correct Ring and Pinion Ratio to T3, Sorry I Mean T4 3.7 V6 Stang #38041wording
  • T4 T4 Mustang #38058aero
  • AS Flotek Head Plunge Cut Inconsistencies #37502other
  • AS Notes clean up #37693weight
  • AS Race memo #37902engine
  • T4 Ford Mustang V6 (05-14) #37516other
  • T4 Request to Classify Club Spec in Appropriate Touring Classes #37523cars added
  • AS Increase Coyote Engine Restrictor to 80mm #36177induction
  • AS Performance Pack for 2015+ Mustang #36867weight
  • AS Gear Ratios #37131engine
  • AS ECU specs for LS engine #37208engine
  • GTL Correct language regarding OEM Areo Devices #37137aero
  • T4 Remove spec lines that have expired #37269induction
  • T4 2016-2018 Mazda Miata MX5 #37085weight -75 lbs
  • T4 Redundant Verbiage Regarding Mustang Spec Lines for Driveshaft #36484suspension & brakes
  • T4 R53 Mini Cooper S Weight Reduction Request #36612weight
  • T4 Allowable Wheel Offset #36855tyres & wheels
  • T4 Fuel Emissions Components #37076engine
  • T4 2019-2024 Mazda 3 for T4 #37077cars added
  • T4 fix brake wording #37129suspension & brakes
  • T4 Evaporative emissions systems #37130engine
  • T4 Allow Spec MX5 upgrade kit for 2009-11 RX8 S2 Transmision #37140other
  • T4 Move Spec Boxster to T4 #37158cars added
  • T4 3.7 Mustangs to T4 #37188cars added
  • T4 BMW 320i Spec Line #37204other
  • T4 MX5 2006-2015 NC Help #37221other
  • T4 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual #37224cars added
  • T4 Civic SI in T4 #37248weight -50 lbs
  • T4 2006-2015 T4 NC Mx5 spec line #37278weight
  • T4 ND MX-5 wheel allowance #37279tyres & wheels
  • T4 T4 BOP #37281weight +75 lbs
  • T4 Allow 7.5 #37286tyres & wheels
  • GTL G16E-GTS Fuel Injection Spec Line Change #36588engine
  • GTL GTL Alternate Weight and Choke Option for L16 engine #36653weight
  • T4 Bop Request 06-11 Honda Civic Si #37013other
Road America Runoffs 20242024-10-012:26.578Gregory Eaton · fastest of 18 · top 5 within 2.6s-0.467s (-0.32%)2:26.429Gregory Eaton · fastest of 18 · top 5 within 2.5s-1.239s (-0.84%)149.6Gregory Eaton+0.4 mph (+0.3%)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%)+4.415squal +4.280s103.0%qual 102.9%2:34.430Matt Spicuzzi · fastest of 15 · top 5 within 1.8s-2.973s (-1.89%)2:34.208Alex Lozano · fastest of 14 · top 5 within 2.2s-3.673s (-2.33%)129.3Alex Lozano-0.9 mph (-0.7%)+7.779squal +7.852s105.3%qual 105.4%
55 rule changes (AS: 11, GTL: 16, T4: 28)13 cars added · 12 weight · 7 engine · 5 induction · 5 suspension & brakes · 3 aero · 1 removed · 1 tyres & wheels · 8 othershowhide
  • AS Mustang transmission ratios #36662engine
  • 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
  • T4 T4 Camaro V6 weight reduction #36232weight
  • T4 BOP adjustment for ND MX5s #36345weight -50 lbs
  • GTL Add GTL to GT3 choke option line. #36236induction
  • T4 Mustang T2/T3 #35877other
  • T4 Homologation of car to T4 #36030cars added
  • T4 T2-T4 Driveshaft Mistake...? #36050weight
  • T4 MINI Cooper S Spec Lines Corrections. #36086removed
  • T4 Allow Removal of Sound Tubes #36130induction
  • T4 B8/8.5 Audi S4 T3 and T2 #36195cars added
  • AS Request for Classification of 2018-2023 mustang In #35764cars added
  • T4 Allow OEM Front Spoiler 06-08 Miata in T4 #35941aero
  • T4 T4 Mustang Weight Reduction In T4 Spec #36051weight -50 lbs
  • T4 R53 Mini Cooper S spec line request In #36056suspension & brakes
  • AS 6th gen Camaro limited prep #35733cars added
  • AS Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V8 LS1 Alum BLK #35825cars added
  • AS Full Prep Head #35891other
  • GTL Request for Spec Line 1010 Reconsideration #35009weight +300 lbs
  • GTL Allow 34 mm chokes for the Datsun 510 #35661induction +50 lbs
  • T4 Allow T4 and T3 RX8 to Disable/Remove Factory Oil Inj. #35761engine
  • T4 2023 ND2 Miata Classification and Allowances #35837weight
  • T4 Errors and Omissions for 06-09 VW Rabbit Rotor #35851suspension & brakes
  • T4 Driveshafts #35916weight
  • T4 GCR ERROR - letter not properly applied to GCR #35999weight
  • AS Restricted Prep Aftermarket Parts Request #35682other
  • AS Allowance of 11 #35824tyres & wheels
  • T4 Corrections to T4 RX8 Spec line #35767aero
  • AS Request to Classify 1970-1981 Camaro and Firebird in AS #33659cars added
  • AS Fuel Cell 12 #34194other
  • AS Please Classify the 6th Gen Into AS. #35448cars added
  • AS spec lines #35713cars added
  • T4 Reorganize Spec Lines #35375induction
  • T4 Allow any 400lb rear spring in the RX8 #35433suspension & brakes
  • T4 370Z Brake Rotor Size Correction #35487suspension & brakes
  • 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
  • T4 More Car Lightening Stuff #35319weight
  • T4 ND Missed Items #35352other
  • T4 Inclusion of B-C spec cars in T4 #35374other
  • T4 T2-T4 Set expiration dates on spec lines #35378induction
  • 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
  • T4 Mazda MX-5 ND1 Spec Line Request #34232weight +50 lbs
  • T4 BRZ/FRS/86 Spring Allowance #35038suspension & brakes
  • T4 TSX Allowance #35219other
  • T4 Requested Update of Model Years of 370Z #35231other
  • 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 20232023-09-232:03.082Daniel Richardson · fastest of 11 · top 5 within 2.2s+0.920s (+0.75%)2:04.120Gregory Eaton · fastest of 9 · top 5 within 3.0s-0.458s (-0.37%)154.6James Jost+3.7 mph (+2.5%)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%)+7.157squal +6.482s105.8%qual 105.3%2:10.514Devin Anderson · fastest of 24 · top 5 within 0.5s+0.937s (+0.72%)2:11.962Devin Anderson · fastest of 23 · top 5 within 0.1s-13.481s (-9.27%)127.8Raymond Blethen+0.5 mph (+0.4%)+7.842squal +7.432s106.3%qual 106.0%
31 rule changes (AS: 4, GTL: 7, T4: 20)8 weight · 5 engine · 5 suspension & brakes · 3 cars added · 2 induction · 2 tyres & wheels · 2 wording · 4 othershowhide
  • T4 Inclusion of similar car. (CLK 320) #34626other
  • AS Crate Motor Part Numbers #32944engine
  • AS Request wheel size change #33007tyres & wheels
  • AS Alternative Upper Front Control Arms for Dodge Challenger #33352engine
  • AS Front Brake Caliper Adapters for Dodge Challenger #33353suspension & brakes
  • T4 Rules Clarification for Mazda RX8 Spec Line #34395weight
  • T4 rule book corrections #34437wording
  • T4 Ride Height Correction for the T3 Solstice. #34615suspension & brakes
  • T4 2002-2006 Mini Cooper S R53 Spec Line Request #34336weight -50 lbs
  • T4 05-06 Mini Wheel Weight #34112weight
  • T4 06-09 VW Rabbit #34153induction
  • T4 96-01 Audi a4 2.8 Spring Rate #34217suspension & brakes
  • GTL Please classify Fields Cardinal V8 #33784cars added
  • T4 Request to Classify 2004-2008 Acura TSX in T4 #33590cars added
  • T4 T4 Mustang Brakes/Swaybar #34036suspension & brakes
  • T4 BMW 320I intercooler #33762other
  • GTL Toyota 4Y Engine Classification Request #33562engine
  • T4 2019-2021 Mazda MX5 ND2 #32027cars added
  • T4 Mustang OEM Grill Request #33333other
  • T4 Mazda OEM LSD was letter 32655 typo #33666wording
  • GTL Toyota 4A-F and 4A-FE 1.6L DOHC 16V Engine Request #33415engine
  • T4 Allowable Springs and Sway Bars for 06-11 Civic si Spec Line #33294suspension & brakes
  • T4 Touring (T2-T5) Category #33617tyres & wheels
  • T4 ENO 9.1.9.2.D.1.e.1.a. #33651other
  • 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
  • T4 T4 mustang #32789weight -25 lbs
  • T4 Mazda OEM LSD was letter 32655 #32933weight -25 lbs
  • GTL Engine Request #33064engine
  • T4 Another 2022 BRZ/86 T3 request #32945weight +225 lbs
Virginia International Raceway Runoffs 20222022-09-242:02.162Kurt Rezzetano · fastest of 13 · top 5 within 2.3s-0.776s (-0.63%)2:04.578Gregory Eaton · fastest of 11 · top 5 within 2.9s+0.678s (+0.55%)150.9James Jost-3.0 mph (-2.0%)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%)+16.602squal +5.627s113.3%qual 104.6%2:09.577John Heinricy · fastest of 18 · top 5 within 0.7s-1.680s (-1.28%)2:25.443John Heinricy · fastest of 18 · top 5 within 2.5s+14.484s (+11.06%)127.4Nick Leverone-1.5 mph (-1.2%)+20.865squal +7.415s116.7%qual 106.1%
41 rule changes (AS: 9, GTL: 3, T4: 29)10 suspension & brakes · 6 weight · 5 tyres & wheels · 4 cars added · 3 engine · 1 induction · 1 removed · 4 wording · 7 othershowhide
  • AS Request to add Hoosier W2 #33031other
  • AS correction of Dodge Challenger specification line #33151wording
  • GTL Tail lights on all GT category race cars. #32799suspension & brakes
  • T4 04-09 Mazda3 Balance Shaft Delete Kit #32795other
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • T4 Request Wider Wheels for Hyundai Tiburon #32536tyres & wheels
  • T4 Request to Add Spec Line for 2004-2009 Mazda3 i 2.0 #32395weight
  • T4 Request Alternate Front & Rear Strut/Shock Top Hats #32452suspension & brakes
  • T4 Request to Allow the Use of Aftermarket ECU's in Touring #31067engine
  • T4 Request JWT BSR Kit for 02-06 Nissan Sentra SE-R/Spec V #31685other
  • T4 Please Confirm Touring 4 (98-00) BMW 323 is E46 generation #31972other
  • T4 RX-8 Spring Part Numbers (E&O) #32151suspension & brakes
  • T4 04-09 Mazda3 Tire Limit Clarification #32249tyres & wheels
  • T4 Shock Part Number Errors & Omissions #32252suspension & brakes
  • T4 Update Solo Spec Coupe to latest '20 specs for Road Racing #32262other
  • T4 Request 2016 Mazda MX5 springs #32265suspension & brakes
  • GTL Request to Classify Ginetta G40 in GTL #31599cars added
  • T4 Reply to letter #31486/29879 T2-T4 Grill openings #31935suspension & brakes
  • T4 BRZ vs BRZ TS #32022tyres & wheels
  • T4 MX-5 Durability Detailed #31102weight
  • T4 Request Allowances for 2005 - 2010 Mustang #31624wording
  • AS Proposed Revisions to SCCA GCR 2021 Appendix M, Part 3 #30295other
  • AS specification line consolidation and correction #31846wording
  • AS correction of SMG specification line #31847suspension & brakes
  • AS Alternate cylinder heads for full prep engine builds - Evaluation #31851engine
  • T4 Reply to letter 29879 T2-T4 Grill Openings #31486suspension & brakes
  • T4 Please Adjust 98-00 BMW 323 Min Weight to Reflect Current Class #31595weight -200 lbs
  • T4 Consolidate 12-13 and 14-15 Honda Civic Si spec lines for T4 #31596removed
  • T4 Request to clarify radiator hoses #31682wording
  • T4 Clarify Permitted/Allowed #31743suspension & brakes
  • T4 Correct RSX wording #31746tyres & wheels
  • T4 Camaro #31751suspension & brakes
  • T4 Nissan Sentra SE-R Spec. V #30958cars added
  • T4 Mazda RX-8 Spec Line Suspension Parts #31113induction
  • T4 Diverter Valve Plunger Upgrade #31307engine
  • T4 Adjust Honda FWD in T4 to encourage more Drivetrain Diversity #31472tyres & wheels
  • T4 Touring 4 BOP adjustments for 2022 #31482weight -175 lbs
  • T4 Request to Classify 2014 VW Jetta 1.8t TSI #30436cars added
  • AS Request for adjustable Front Upper Control Arms on 4th Gen F-Body #30457other
  • AS Request Pontiac GTO tire size change #30881weight
  • GTL Request car classification #31032cars added
Indianapolis Motor Speedway Runoffs 20212021-09-251:50.427Drew Cattell · fastest of 31 · top 5 within 1.9s+5.207s (+4.95%)1:50.606Gregory Eaton · fastest of 28 · top 5 within 1.7s-0.901s (-0.81%)153.8James Jost1:51.819Christopher 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+1.346squal +1.392s101.2%qual 101.3%1:54.397Stephen Blethen · fastest of 47 · top 5 within 0.9s-2.169s (-1.86%)1:55.929John Heinricy · fastest of 46 · top 5 within 1.0s-0.994s (-0.85%)127.3Alexander Schefer+5.323squal +3.970s104.8%qual 103.6%
42 rule changes (AS: 14, GTL: 8, T4: 20)11 weight · 6 cars added · 4 engine · 4 tyres & wheels · 3 induction · 2 suspension & brakes · 5 wording · 7 othershowhide
  • 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
  • T4 Wrong Part Number on 320i Spec Line #30645wording
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • AS Request to consolidate SN95 Mustang '94-'04 Mustang spec lines #30428cars added
  • AS American Sedan Transmission Rule Change Request #30595weight
  • AS Correction to specifications inadvertently deleted #30691wording
  • AS weight adjustments #30700weight +50 lbs
  • T4 Civic Type R Brake Rotors #29817suspension & brakes
  • T4 Mini Cooper Spec Line Anomalies #30478weight
  • T4 Request CAI Mustang in T4 #30562induction
  • T4 Request consistency review in GCR #30263other
  • AS AS Mustang LP 4.6 3V Classification Transmission Request #29886weight
  • AS Request CF driveshaft on CTS-V for durability improvement #30117engine
  • AS Adjustment to model years of 5th generation RP Camaro #30348engine
  • GTL Request for Help for Mazda 12A #29754weight +50 lbs
  • T4 E & O T4 Mustang Wheels #30245tyres & wheels
  • GTL Request LP HP Fiat X1/9 & Bertone 1500 to GTL #30058cars added
  • T4 2021 Toyota Supra #29567cars added
  • T4 06-15 MX-5 Durability #29781other
  • T4 Request for Update to T4 Spec Line for Chevrolet Sonic (2011-) #29838induction
  • T4 NC MX-5 06-15 Part Number updates for 2021 #29921weight
  • T4 BMW Z4 2.5L (03-05) Spec Line #30037weight -50 lbs
  • T4 Sway Bars for T4 2016+ MX5 Mazda #30063suspension & brakes
  • T4 Change part numbers on BRZ, FRS lines in T4 #30104wording
  • T4 T4 Mustang Axle Ratio and Wheels #30149tyres & wheels
  • AS Request for 2015 -2017 Ford Mustang Spec Line #29514cars added
  • AS Request Trunk lid / Rear Hatch clarification #29591wording
  • AS Common Weight for CTS-V Tire #29759weight
  • AS Correction to specifications inadvertently deleted #30041cars added
  • GTL Please Add GTL Nissan 1.8L Engine MRA8DE #29805engine
  • GTL Increase 13b SIR size #29867induction
  • T4 Request to Classify BMW M2 CS #29523cars added
  • T4 Allow the SpecMX-5 Update Kit Into Touring 4 for the MX-5 #29681other
  • T4 Request Mustang 8.8” rear axle replacement #29860other
  • T4 Cap year range on all 86s #29908other
  • AS Request Additional Engine Options for Dodge Challenger Spec Line #29543engine
  • AS Rule simplification spec line communization #29824weight
  • T4 Alfa Romeo 4C Launch Edition #29531other
  • T4 Post Runoffs Feedback for T4 #29752tyres & wheels -50 lbs
Road America Runoffs 20202020-10-022:27.045Gregory Eaton · fastest of 18 · top 5 within 0.6s2:27.668Gregory Eaton · fastest of 15 · top 5 within 1.5s149.2Gregory Eaton2:31.943Chris Bovis · fastest of 14 · top 5 within 6.3s2:31.601Peter Shadowen · fastest of 14 · top 5 within 7.2s131.4Peter Shadowen+3.933squal +4.898s102.7%qual 103.3%2:37.403John Heinricy · fastest of 20 · top 5 within 2.5s2:37.881Chi Ho · fastest of 19 · top 5 within 1.6s130.2Chi Ho+10.213squal +10.358s106.9%qual 107.0%
58 rule changes (AS: 16, GTL: 17, T4: 25)9 aero · 8 cars added · 8 weight · 6 induction · 6 suspension & brakes · 4 engine · 4 tyres & wheels · 4 wording · 9 othershowhide
  • GTL GT Category Wording #29193induction
  • AS Dodge Challenger AS Spec Line Clarification #28698induction
  • AS Dodge Challenger AS Spec Line Clarification #2 #28699aero
  • GTL Request to change the Mazda 13b restrictor size #28518induction +175 lbs
  • T4 Scion FRS Solo Spec Coupe Gear Ratio #29021other
  • AS Support for R-Type Specification Tires #27450tyres & wheels
  • AS Spec Tire Request #27519tyres & wheels
  • AS Restrictor Plate Change for RP 2011+ Mustang with Coyote Engine #27675induction
  • AS 2005-2009 Restricted Prep 4.6 3V #27908engine
  • AS Request for 2005-2009 Restricted Prep 4.6 3V Parts #27909engine
  • AS Request for Full Preparation Classification for 2010-2014 Camaro #28030other
  • AS Cylinder Heads #28696engine
  • AS Request for Max Rotor Diameter Change #28748suspension & brakes
  • AS Request increase rotor diameter #28797other
  • 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
  • T4 T4 RX8 bodywork clarification #28941aero
  • T4 2006-2015 MX-5 Clarification #28942tyres & wheels
  • T4 Request to Add a Vehicle to the Roster (contd.) #27698other
  • GTL Stall Test #28709induction
  • T4 Request to Classify 2004 Mercedes Benz 320 CLK #27663cars added
  • AS weight adjustments for 2020 season #28785weight -50 lbs
  • GTL GTL Wing Rule #28754aero
  • T4 Request to change allowed header part # for T4 06-15 Miata #28223wording
  • T4 Z3M Roadster Weight #28437weight
  • 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
  • T4 Request for 12-13 and 14-15 Honda Civic Springs #27848suspension & brakes
  • T4 Request to Clarify T4 05-10 Mustang Spring Allowance #27899suspension & brakes
  • AS Rear Trailing Arms #28007suspension & brakes
  • AS Weight reduction for cars running iron heads #28010weight
  • AS 05-10 Mustang with HR cam classification #28226cars added
  • AS 10-15 Camaro Full Prep classification #28227cars added
  • GTL Windshield Clips #27323other
  • T4 Request to Allow Brake Upgrade on T4 Mustang #27329suspension & brakes
  • T4 Please Switch the Solstice GXP as Specified in T2, to T3 #27413weight -50 lbs
  • T4 Request to Classify all Mazda RX8 Models in T3/T4 #27606cars added
  • T4 Request for 2014-2018 Mazda 3 GT Brakes #27659suspension & brakes
  • T4 Request to allow aftermarket OEM coolant expansion tank #27763engine
  • T4 Request to allow aftermarket OEM power steering reservoir #27764wording
  • T4 Request for Factory Installed Wings on Subaru BRZ #27831other
  • T4 Request for Replacement Clutches #27892other
  • T4 Request to Classify Chevy Sonic 1.4 In T4 #27906cars added
  • T4 Weight Change Request for 1999 Mazda Miata #28129weight -50 lbs
  • GTL Request Factory Five Daytona coupe classification #26308cars added
  • GTL Request to Classify the MK1 two door Jetta #27648cars added
  • T4 Clarification of On-Board Fire System for T2 #27183wording
  • T4 Mustang Ecoboost and GT Transmission #27439other
  • T4 BRZ/FRS/86 Tire Size in T4 #27660tyres & wheels
  • T4 NC MX5 2006-2015 Spec Adjustment Request #27739weight -75 lbs
  • T4 T4 RX8 Classification Error #27902wording
  • T4 Request to add Toyota 86 GT to Spec Line #27910other
  • GTL 88-91 Honda CRX Spec Line Correction #27233weight
Virginia International Raceway Runoffs 20192019-10-052:02.938Gregory Eaton · fastest of 17 · top 5 within 0.8s2:03.900James Jost · fastest of 16 · top 5 within 2.1s153.9James Jost2:06.997Peter Shadowen · fastest of 19 · top 5 within 4.0s2:07.837Bill Ball · fastest of 18 · top 5 within 4.2s131.1Peter Shadowen+3.937squal +4.059s103.2%qual 103.3%1:55.124Bryce Cornet · fastest of 8 · top 5 within 2.3s2:15.816Bryce Cornet · fastest of 8 · top 5 within 4.9s135.7Bryce Cornet+11.916squal -7.814s109.6%qual 93.6%2:11.257John Heinricy · fastest of 25 · top 5 within 0.2s2:10.959Nick Leverone · fastest of 25 · top 5 within 0.6s128.9Tommy Boileau+7.059squal +8.319s105.7%qual 106.8%
32 rule changes (AS: 4, GTL: 13, T4: 15)9 weight · 7 cars added · 5 suspension & brakes · 3 engine · 2 induction · 2 tyres & wheels · 2 wording · 2 othershowhide
  • AS Request to add SMG to 9.1.6.B.1 AS Intent #27140other
  • GTL Fun Cup Beetle #27334weight
  • T4 Request spare tire/wheel clarification #27012tyres & wheels
  • T4 Research E&O Mazda MX5 #27112weight
  • AS Request Ride Height Clarification #26598suspension & brakes
  • GTL GTL #26960weight
  • GTL Request CRZ wheelbase change #26896tyres & wheels
  • T4 MR2 Spyder Year Correction #26936wording
  • AS Request to Revert to 2017 Weights #25885weight
  • T4 Request to allow piggy back ECU on 2000 Mazda Protégé #26085engine
  • T4 Request helper spring as optional #26678suspension & brakes
  • 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
  • T4 Request to classify 2000 - 2001 BMW 323 #25096cars added
  • GTL Request Mazda 12a Rotary SIR Increase #26081induction
  • GTL Request to Classify Mustang 2 Body in GTL #26222cars added
  • T4 Correct Mazda MX-5 Hard Top Notes #26137weight
  • T4 Consider opening class rules to allow any thermostat #26187wording
  • T4 Cap 2016 Mazda Miata year at 2018 #26388other
  • AS SMG Mustang eligibility in American sedan #26224cars added
  • T4 2012-2015 Honda Civic Si Performance Request #26129suspension & brakes
  • GTL Request for GTL Mini Adjustments #25754weight
  • GTL BMC thru Rover Group remove long inactive mini #25771weight
  • GTL GTX Homologation table update #26034cars added
  • T4 Errors, Omissions, and Updates (Various) #22414weight
  • T4 Request for Adjustments to fiat 124 specline #25371induction
  • T4 Add Clarification to Spec Car Classifications Vehicle Spec #25774weight
  • T4 Clarify Subframe Bushings Permitted for T2-T4 #25800suspension & brakes
  • T4 Consider Solo SSC cross over classification into T4 #25802cars added
Sonoma Raceway Runoffs 20182018-10-101:47.782Andrew McDermid · fastest of 12 · top 5 within 1.9s1:50.345John Heinricy · fastest of 10 · top 5 within 2.3s105.0Kevin Fandozzi1:47.885Troy Ermish · fastest of 20 · top 5 within 4.5s1:49.458Troy Ermish · fastest of 19 · top 5 within 3.6s109.3Charles Leonard-0.887squal +0.103s99.2%qual 100.1%1:37.598Bryce Cornet · fastest of 13 · top 5 within 0.9s1:37.909Bryce Cornet · fastest of 12 · top 5 within 1.3s124.1Melvin David Kemper Jr-12.436squal -10.184s88.7%qual 90.6%1:52.339Gresham Wagner · fastest of 12 · top 5 within 1.1s1:54.030John Heinricy · fastest of 12 · top 5 within 0.2s106.0Ross Murray+3.685squal +4.557s103.3%qual 104.2%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:45.220James Jost · fastest of 29 · top 5 within 6.7s1:51.507Bryan Long · fastest of 28 · top 5 within 0.9s1:50.331Christopher Bovis · fastest of 26 · top 5 within 1.5s1:52.068Christopher Bovis · fastest of 20 · top 5 within 1.0s+0.561squal +5.111s100.5%qual 104.9%1:41.231Jarret Voorhies · fastest of 16 · top 5 within 1.7s1:41.146Jarret Voorhies · fastest of 16 · top 5 within 1.2s-10.361squal -3.989s90.7%qual 96.2%1:56.566Oscar Jackson · fastest of 40 · top 5 within 0.6s1:56.923Oscar Jackson · fastest of 38 · top 5 within 1.1s+5.416squal +11.346s104.9%qual 110.8%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:30.651Tom Sloe · fastest of 22 · top 5 within 3.6s1:33.424Edward Hosni · fastest of 20 · top 5 within 1.0s1:35.377Wilson Wright · fastest of 28 · top 5 within 1.2s1:35.912Kyle Disque · fastest of 28 · top 5 within 1.1s+2.488squal +4.726s102.7%qual 105.2%1:26.043Jacob Loomis · fastest of 8 · top 5 within 3.1s1:27.922Jacob Loomis · fastest of 8 · top 5 within 2.7s-5.502squal -4.608s94.1%qual 94.9%1:38.813Jonathan Yanca · fastest of 34 · top 5 within 2.0s1:40.397Oscar Jackson · fastest of 32 · top 5 within 0.8s+6.973squal +8.162s107.5%qual 109.0%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:01.746Tom Sloe · fastest of 22 · top 5 within 2.6s2:02.922Andy McDermid · fastest of 19 · top 5 within 2.2s2:11.387Jim Dentici · fastest of 10 · top 5 within 2.2s2:13.564Jim Dentici · fastest of 9 · top 5 within 2.0s+10.642squal +9.641s108.7%qual 107.9%1:57.804Joseph Burton-Harris · fastest of 10 · top 5 within 2.3s1:58.029Joseph Burton-Harris · fastest of 10 · top 5 within 1.7s-4.893squal -3.942s96.0%qual 96.8%2:15.886Philip Royle · fastest of 22 · top 5 within 0.9s2:15.994Philip Royle · fastest of 20 · top 5 within 1.6s+13.072squal +14.140s110.6%qual 111.6%

By track

TrackEvents Typical % of AS Best Latest 
Road America4100.0%100.0%Runoffs 2020100.0%Runoffs 2026
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 AS'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.