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BoP Lab / Classes / HP

HP vs SM vs B-Spec pace at every track

Lap times across years say as much about the weather as the class. % of HP is each class's best lap as a share of HP'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+vsB-Spec×EP+FA+FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP×P+P2+vsSM×SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 51 inactive classes
Series
Reference · what % is measured against, 12 events
Tracks · untick to narrow

Closest to the field: HP 100.0% of HP Alan (Aj) Hulse, Daytona International Speedway Runoffs 2015 race · SM 97.8% of HP Preston Pardus, Road America Runoffs 2020 race · B-Spec 103.2% of HP Riley Salyer, Road America Runoffs 2020 race

1:402:002:202:403:0022 rule changes between Runoffs 2018 and Runoffs 201922 ▾40 rule changes between Runoffs 2019 and Runoffs 202040 ▾44 rule changes between Runoffs 2020 and Runoffs 202144 ▾36 rule changes between Runoffs 2021 and Runoffs 202236 ▾29 rule changes between Runoffs 2022 and Runoffs 202329 ▾56 rule changes between Runoffs 2023 and Runoffs 202456 ▾44 rule changes between Runoffs 2024 and Runoffs 202544 ▾47 rule changes between Runoffs 2025 and Runoffs 202647 ▾HP race best at Runoffs 2015: 2:17.981 (Alan (Aj) Hulse)HP race best at Runoffs 2016: 1:40.442 (Jason Isley)HP race best at Runoffs 2017: 1:57.569 (Vesa Silegren)HP race best at Runoffs 2018: 1:54.434 (Jason Isley)HP race best at Runoffs 2019: 2:15.062 (Ron Bartell)HP race best at Runoffs 2020: 2:47.444 (Steve Sargis)HP race best at Runoffs 2021: 1:56.188 (Steve Sargis)HP race best at Runoffs 2022: 2:11.803 (Vesa Silegren)HP race best at Runoffs 2023: 2:14.681 (Chris Schaafsma)HP race best at Runoffs 2024: 2:37.731 (Chuck Mathis)HP race best at Runoffs 2025: 2:38.270 (Steve Sargis)HP race best at Runoffs 2026: 2:38.036 (Steve Sargis)HP qualifying best at Runoffs 2015: 2:17.369 (Jason Isley)HP qualifying best at Runoffs 2016: 1:39.954 (Jason Isley)HP qualifying best at Runoffs 2017: 1:57.421 (Jason Isley)HP qualifying best at Runoffs 2018: 1:54.070 (Brian Linn)HP qualifying best at Runoffs 2019: 2:14.822 (Steve Sargis)HP qualifying best at Runoffs 2020: 2:39.695 (Daniel Meller)HP qualifying best at Runoffs 2021: 1:54.417 (Steve Sargis)HP qualifying best at Runoffs 2022: 2:13.952 (Steve Sargis)HP qualifying best at Runoffs 2023: 2:14.029 (Chris Schaafsma)HP qualifying best at Runoffs 2024: 2:38.445 (Chuck Mathis)HP qualifying best at Runoffs 2025: 2:38.785 (Steve Sargis)HP qualifying best at Runoffs 2026: 2:39.406 (Chris Schaafsma)SM race best at Runoffs 2015: 2:24.067 (Todd Lamb)SM race best at Runoffs 2016: 1:40.764 (Michael Carter)SM race best at Runoffs 2017: 1:59.100 (Michael Gagliardo)SM race best at Runoffs 2018: 1:55.278 (Michael Carter)SM race best at Runoffs 2019: 2:16.459 (Elivan Goulart)SM race best at Runoffs 2020: 2:43.748 (Preston Pardus)SM race best at Runoffs 2021: 1:58.837 (Brian Henderson)SM race best at Runoffs 2022: 2:19.107 (Travis Wiley)SM race best at Runoffs 2023: 2:16.229 (Julian DaCosta)SM race best at Runoffs 2024: 2:41.486 (Brett Kowalski)SM race best at Runoffs 2025: 2:44.430 (Kyle Greenhill)SM race best at Runoffs 2026: 2:42.725 (Francisco Barroso)SM qualifying best at Runoffs 2015: 2:18.661 (Andrew Carbonell)SM qualifying best at Runoffs 2016: 1:40.514 (Justin Hille)SM qualifying best at Runoffs 2017: 1:58.306 (Chris Haldeman)SM qualifying best at Runoffs 2018: 1:54.355 (Ken Sutherland)SM qualifying best at Runoffs 2019: 2:14.552 (Todd Buras)SM qualifying best at Runoffs 2020: 2:42.209 (Kyle Greenhill)SM qualifying best at Runoffs 2021: 1:57.695 (Brian Henderson)SM qualifying best at Runoffs 2022: 2:14.664 (Danny Steyn)SM qualifying best at Runoffs 2023: 2:14.986 (Danny Steyn)SM qualifying best at Runoffs 2024: 2:41.106 (Ethan Goulart)SM qualifying best at Runoffs 2025: 2:43.111 (Bobby Gossett)SM qualifying best at Runoffs 2026: 2:42.173 (Brett Kowalski)B-Spec race best at Runoffs 2015: 2:29.465 (John Heinricy)B-Spec race best at Runoffs 2016: 1:46.930 (John Heinricy)B-Spec race best at Runoffs 2017: 2:04.050 (David Daughtery)B-Spec race best at Runoffs 2018: 1:59.852 (Jake Pipal)B-Spec race best at Runoffs 2019: 2:22.094 (David Daughtery)B-Spec race best at Runoffs 2020: 2:52.847 (Riley Salyer)B-Spec race best at Runoffs 2021: 2:03.971 (Steve Introne)B-Spec race best at Runoffs 2022: 2:23.819 (Riley Salyer)B-Spec race best at Runoffs 2023: 2:23.732 (Richard Hromin)B-Spec race best at Runoffs 2024: 2:51.889 (Rob Piekarczyk)B-Spec race best at Runoffs 2025: 2:53.613 (Daniel Conway)B-Spec race best at Runoffs 2026: 2:51.633 (Josh Schmidt)B-Spec qualifying best at Runoffs 2015: 2:29.366 (John Heinricy)B-Spec qualifying best at Runoffs 2016: 1:46.865 (David Daughtery)B-Spec qualifying best at Runoffs 2017: 2:03.166 (David Daughtery)B-Spec qualifying best at Runoffs 2018: 1:59.321 (Oscar Jackson)B-Spec qualifying best at Runoffs 2019: 2:22.368 (Frank Schwartz)B-Spec qualifying best at Runoffs 2020: 2:52.033 (David Daughtery)B-Spec qualifying best at Runoffs 2021: 2:03.121 (John Phillips)B-Spec qualifying best at Runoffs 2022: 2:22.945 (Steve Introne)B-Spec qualifying best at Runoffs 2023: 2:22.707 (Riley Salyer)B-Spec qualifying best at Runoffs 2024: 2:52.027 (Daniel Conway)B-Spec qualifying best at Runoffs 2025: 2:52.211 (Josh Schmidt)B-Spec qualifying best at Runoffs 2026: 2:51.987 (Josh Schmidt)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
HPSMB-Specsolid race · dashed qualifying · slower is lower
100%102%104%106%108%110%22 rule changes between Runoffs 2018 and Runoffs 201922 ▾40 rule changes between Runoffs 2019 and Runoffs 202040 ▾44 rule changes between Runoffs 2020 and Runoffs 202144 ▾36 rule changes between Runoffs 2021 and Runoffs 202236 ▾29 rule changes between Runoffs 2022 and Runoffs 202329 ▾56 rule changes between Runoffs 2023 and Runoffs 202456 ▾44 rule changes between Runoffs 2024 and Runoffs 202544 ▾47 rule changes between Runoffs 2025 and Runoffs 202647 ▾HP race best at Runoffs 2015: 100.0% of HP's (Alan (Aj) Hulse)HP race best at Runoffs 2016: 100.0% of HP's (Jason Isley)HP race best at Runoffs 2017: 100.0% of HP's (Vesa Silegren)HP race best at Runoffs 2018: 100.0% of HP's (Jason Isley)HP race best at Runoffs 2019: 100.0% of HP's (Ron Bartell)HP race best at Runoffs 2020: 100.0% of HP's (Steve Sargis)HP race best at Runoffs 2021: 100.0% of HP's (Steve Sargis)HP race best at Runoffs 2022: 100.0% of HP's (Vesa Silegren)HP race best at Runoffs 2023: 100.0% of HP's (Chris Schaafsma)HP race best at Runoffs 2024: 100.0% of HP's (Chuck Mathis)HP race best at Runoffs 2025: 100.0% of HP's (Steve Sargis)HP race best at Runoffs 2026: 100.0% of HP's (Steve Sargis)HP qualifying best at Runoffs 2015: 100.0% of HP's (Jason Isley)HP qualifying best at Runoffs 2016: 100.0% of HP's (Jason Isley)HP qualifying best at Runoffs 2017: 100.0% of HP's (Jason Isley)HP qualifying best at Runoffs 2018: 100.0% of HP's (Brian Linn)HP qualifying best at Runoffs 2019: 100.0% of HP's (Steve Sargis)HP qualifying best at Runoffs 2020: 100.0% of HP's (Daniel Meller)HP qualifying best at Runoffs 2021: 100.0% of HP's (Steve Sargis)HP qualifying best at Runoffs 2022: 100.0% of HP's (Steve Sargis)HP qualifying best at Runoffs 2023: 100.0% of HP's (Chris Schaafsma)HP qualifying best at Runoffs 2024: 100.0% of HP's (Chuck Mathis)HP qualifying best at Runoffs 2025: 100.0% of HP's (Steve Sargis)HP qualifying best at Runoffs 2026: 100.0% of HP's (Chris Schaafsma)SM race best at Runoffs 2015: 104.4% of HP's (Todd Lamb)SM race best at Runoffs 2016: 100.3% of HP's (Michael Carter)SM race best at Runoffs 2017: 101.3% of HP's (Michael Gagliardo)SM race best at Runoffs 2018: 100.7% of HP's (Michael Carter)SM race best at Runoffs 2019: 101.0% of HP's (Elivan Goulart)Off the chart: SM race best at Runoffs 2020: 97.8% of HP's (Preston Pardus)SM race best at Runoffs 2021: 102.3% of HP's (Brian Henderson)SM race best at Runoffs 2022: 105.5% of HP's (Travis Wiley)SM race best at Runoffs 2023: 101.1% of HP's (Julian DaCosta)SM race best at Runoffs 2024: 102.4% of HP's (Brett Kowalski)SM race best at Runoffs 2025: 103.9% of HP's (Kyle Greenhill)SM race best at Runoffs 2026: 103.0% of HP's (Francisco Barroso)SM qualifying best at Runoffs 2015: 100.9% of HP's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 100.6% of HP's (Justin Hille)SM qualifying best at Runoffs 2017: 100.8% of HP's (Chris Haldeman)SM qualifying best at Runoffs 2018: 100.2% of HP's (Ken Sutherland)SM qualifying best at Runoffs 2019: 99.8% of HP's (Todd Buras)SM qualifying best at Runoffs 2020: 101.6% of HP's (Kyle Greenhill)SM qualifying best at Runoffs 2021: 102.9% of HP's (Brian Henderson)SM qualifying best at Runoffs 2022: 100.5% of HP's (Danny Steyn)SM qualifying best at Runoffs 2023: 100.7% of HP's (Danny Steyn)SM qualifying best at Runoffs 2024: 101.7% of HP's (Ethan Goulart)SM qualifying best at Runoffs 2025: 102.7% of HP's (Bobby Gossett)SM qualifying best at Runoffs 2026: 101.7% of HP's (Brett Kowalski)B-Spec race best at Runoffs 2015: 108.3% of HP's (John Heinricy)B-Spec race best at Runoffs 2016: 106.5% of HP's (John Heinricy)B-Spec race best at Runoffs 2017: 105.5% of HP's (David Daughtery)B-Spec race best at Runoffs 2018: 104.7% of HP's (Jake Pipal)B-Spec race best at Runoffs 2019: 105.2% of HP's (David Daughtery)B-Spec race best at Runoffs 2020: 103.2% of HP's (Riley Salyer)B-Spec race best at Runoffs 2021: 106.7% of HP's (Steve Introne)B-Spec race best at Runoffs 2022: 109.1% of HP's (Riley Salyer)B-Spec race best at Runoffs 2023: 106.7% of HP's (Richard Hromin)B-Spec race best at Runoffs 2024: 109.0% of HP's (Rob Piekarczyk)B-Spec race best at Runoffs 2025: 109.7% of HP's (Daniel Conway)B-Spec race best at Runoffs 2026: 108.6% of HP's (Josh Schmidt)B-Spec qualifying best at Runoffs 2015: 108.7% of HP's (John Heinricy)B-Spec qualifying best at Runoffs 2016: 106.9% of HP's (David Daughtery)B-Spec qualifying best at Runoffs 2017: 104.9% of HP's (David Daughtery)B-Spec qualifying best at Runoffs 2018: 104.6% of HP's (Oscar Jackson)B-Spec qualifying best at Runoffs 2019: 105.6% of HP's (Frank Schwartz)B-Spec qualifying best at Runoffs 2020: 107.7% of HP's (David Daughtery)B-Spec qualifying best at Runoffs 2021: 107.6% of HP's (John Phillips)B-Spec qualifying best at Runoffs 2022: 106.7% of HP's (Steve Introne)B-Spec qualifying best at Runoffs 2023: 106.5% of HP's (Riley Salyer)B-Spec qualifying best at Runoffs 2024: 108.6% of HP's (Daniel Conway)B-Spec qualifying best at Runoffs 2025: 108.5% of HP's (Josh Schmidt)B-Spec qualifying best at Runoffs 2026: 107.9% of HP's (Josh Schmidt)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
HPSMB-Specsolid race · dashed qualifying · each class's best lap as a share of HP's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventHPSMB-Spec
Qual best Race best Trap Qual best Race best Trap vs HP % of HP Qual best Race best Trap vs HP % of HP 
Road America Runoffs 20262026-09-282:39.406Chris Schaafsma · fastest of 15 · top 5 within 7.7s+0.621s (+0.39%)2:38.036Steve Sargis · fastest of 11 · top 5 within 4.6s-0.234s (-0.15%)122.7Jesse Prather-2.2 mph (-1.8%)2:42.173Brett Kowalski · fastest of 34 · top 5 within 0.3s-0.938s (-0.58%)2:42.725Francisco Barroso · fastest of 35 · top 5 within 0.2s-1.705s (-1.04%)119.6Wyatt Couch+0.3 mph (+0.3%)+4.689squal +2.767s103.0%qual 101.7%2:51.987Josh Schmidt · fastest of 23 · top 5 within 1.3s-0.224s (-0.13%)2:51.633Josh Schmidt · fastest of 22 · top 5 within 1.7s-1.980s (-1.14%)112.5Ricky Holmstrom-0.2 mph (-0.1%)+13.597squal +12.581s108.6%qual 107.9%
47 rule changes (HP: 29, SM: 2, B-Spec: 16)12 weight · 8 engine · 6 suspension & brakes · 5 induction · 3 cars added · 3 tyres & wheels · 4 wording · 6 othershowhide
  • HP Mini Cooper Compression Ratio #40517engine
  • HP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7 #40322engine
  • HP 1275 Midget/Sprit Alternate intake manifold E/O #40370induction
  • HP HP Honda Civic (92-95) #40464weight -70 lbs
  • SM Rear Toe Link #40271other
  • B-Spec ECU Location in Mazda2 #40034engine
  • B-Spec Allow Cars With Combined Brake/Clutch Reservoir to Separate. #40122suspension & brakes
  • HP Austin Healy Sprite/ MG Midget 1275 Induction Change Request #40213weight
  • B-Spec Race Memo RM 26-01 B-Spec Mini Cooper Weight Adjustments with OEM #40070weight
  • HP Miata track width - errors and omissions #39976wording
  • HP Triumph GT6 Spec Change. #40098induction
  • HP Request to Classify BMW E21 320i #40110cars added
  • HP BMW 318is 84-85 engine displacement correction #40116engine
  • SM Part Number Change Request #39914wording
  • B-Spec Add Getrag GS5BG Transmisson Ratios for Mini R50 #39416suspension & brakes
  • B-Spec Exhaust Rules Update #39669other
  • B-Spec Please reinstate KW suspension for R56 #39727other
  • B-Spec Add approved replacement catalysts #39817other
  • B-Spec Yaris/Versa catalyst removal #39818other
  • HP Clarification On Oil Cooler Ducting #39604tyres & wheels
  • HP Honda Fit 2015-19 Error in Engine Classification #39853engine
  • B-Spec C-Spec Rear Sway Bars #39652suspension & brakes
  • HP Triumph Spitfire 1296cc Compression Ratio Increase to 12:1 #39589engine
  • B-Spec Notes section cleanup #39062weight
  • B-Spec 2026 BOP Recommendations #39475weight +25 lbs
  • B-Spec Expire NLA Mazda 2 Headers #39582weight
  • HP E/O: Improve Consistency of the Spec Lines #39500other
  • HP Request to Reclassify BMW 2002 Into H Production #39567cars added
  • HP Request to Re-Classsify Datsun SPL-311 to HP from FP #39116cars added
  • HP TR2 Notes E&O #39180weight
  • HP Balance of Power #39187weight +50 lbs
  • HP Alternative BOP Request for 84-87 Honda CRX/Civic #39223tyres & wheels
  • B-Spec Alternate Shift Cable Bushings and Rear Spring Seats #38472suspension & brakes
  • B-Spec Fiesta BOP Adjustment #38847weight +55 lbs
  • B-Spec Request to Remove Rear Shock From Spec Line Hyundai Accents/Kia #39017suspension & brakes
  • B-Spec Update Honda Fit MT (07-08) Runoffs Eligibility #39060induction
  • HP Please Lower Weight of 280Z #38871weight -160 lbs
  • HP Miata Weight Adjustment Follow Up #38949weight -25 lbs
  • HP Weight Break for 1098 Midget / Sprite #38970weight -80 lbs
  • HP HP Volvo 142 spec omission #38994engine
  • HP HP Mini DOHC 1.6 #38996engine
  • HP Add to Rabbit description #39019wording
  • HP Clean-up 9.1.5.E.7e #39025suspension & brakes
  • HP Add TB size to Ford Mustang (94-98) Spec Line #39130induction
  • HP HP Plymouth Arrow spec omission #38995wording
  • HP Add Wheel Diameter to Appendix G #39008tyres & wheels
  • HP Add TB ID tolerance to general Prod rules #39009induction
Road America Runoffs 20252025-09-292:38.785Steve Sargis · fastest of 17 · top 5 within 1.9s+0.340s (+0.21%)2:38.270Steve Sargis · fastest of 14 · top 5 within 2.4s+0.539s (+0.34%)124.9Chris Schaafsma+2.1 mph (+1.7%)2:43.111Bobby Gossett · fastest of 32 · top 5 within 0.3s+2.005s (+1.24%)2:44.430Kyle Greenhill · fastest of 28 · top 5 within 0.3s+2.944s (+1.82%)119.3Francisco Barroso-0.6 mph (-0.5%)+6.160squal +4.326s103.9%qual 102.7%2:52.211Josh Schmidt · fastest of 19 · top 5 within 0.8s+0.184s (+0.11%)2:53.613Daniel Conway · fastest of 18 · top 5 within 0.4s+1.724s (+1.00%)112.7Stewart Black-0.4 mph (-0.3%)+15.343squal +13.426s109.7%qual 108.5%
44 rule changes (HP: 17, SM: 4, B-Spec: 23)11 weight · 8 induction · 6 suspension & brakes · 3 cars added · 2 engine · 1 tyres & wheels · 2 wording · 11 othershowhide
  • B-Spec Remove Asterisk from Rule 9 #38768other
  • B-Spec Disabling 2 Pedal Shutdown #38354engine
  • B-Spec Update Honda Fit MT (07-08) Intake Allowance #38530induction
  • HP BMW Z4 update #38490induction
  • HP EP Fiat 124 Spider Competition Adjustment Request #38498weight -50 lbs
  • B-Spec Add Sedan spec lines for Hyundai & Kia #37537cars added
  • B-Spec Shifter Bushing Questions. #38048suspension & brakes
  • B-Spec Add Weapon R Intake to Honda Fit MT (09-14) Spec Line #38306induction
  • B-Spec Update Rule 46 #38307suspension & brakes
  • HP Base Weight Adjustment for H-Production X1/9 Spec Lines #38255weight -50 lbs
  • SM SMX Data Submission - Penalties #38248other
  • SM SMX Penaly Clarification updated language #38337wording
  • B-Spec Correct Hyundai/Kia Model Years #37943wording
  • B-Spec 07-08 Honda Fit MT Requests #37974weight +50 lbs
  • B-Spec Add B14 Kit Part # to Honda Fit (07-08) Spec line #38010other
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • B-Spec 2025 BOP Recommendations #37520weight
  • B-Spec Hyundai/Toyota Factory Rear Disc Models #37534weight
  • B-Spec Request to Update the Spec line for Hyundai Accent and Kia Rio #37880suspension & brakes
  • HP Request for Classification of Chevrolet Spark #37755cars added
  • HP Request to Lower Ford Festiva Minimum Weight to 1600 LBS #37939weight -100 lbs
  • B-Spec Toyota Yaris Hatchback (12-18) rear disc brakes #37530suspension & brakes
  • B-Spec Yaris Speed Sensor #37536other
  • B-Spec Set Expiration Date For Fiat 500 #37689other
  • HP Request Competition Adjustment to BMW Z3 2.5L #37120induction
  • HP HP Class Adjustments #37459weight +50 lbs
  • HP Interpretation of Production Rules on Mirrors #37235other
  • HP Weight Reduction for Honda S2000 #37466weight
  • HP Mazda 1999 Miata 1.8L #37488weight -50 lbs
  • HP MINI Cooper (07-13) Spec Line Correction: Errors and Omissions #37560engine
  • HP Effective date for Jan 2025 GCR updates #37654induction
  • B-Spec Remove Redundant Language from Notes Sections #37337induction
  • B-Spec Expire designated spec lines #37517other
  • B-Spec Set expiration date for Nissan Micra Cup Cars (Canadian) #37519other
  • B-Spec Remove wheelbase from spec lines and replace with Restrictor #36074induction
  • B-Spec Bilstein Rear Shock Request for Hyundai Accent/Kia Rio #36965suspension & brakes
  • HP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line #37119weight -50 lbs
  • HP Request to Update 1988-1991 Civic to Match 1988-1991 CRX #37444weight -70 lbs
  • HP MINI Cooper Spec Line Correction - Rear Brake Rotor Diameter #37176suspension & brakes
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
  • B-Spec Scion IA/Toyota Yaris/Mazda 2 DY chassis suspension #35780other
  • B-Spec Clean up 07-08 Honda Fit AT Notes Section #36542induction
  • HP 1275 HP Spridget Level 2 Only #36518other
  • HP Request for Classification of 1989-1994 Suzuki Swift GT 16V Twin #36858cars added
Road America Runoffs 20242024-10-012:38.445Chuck Mathis · fastest of 20 · top 5 within 3.4s-1.250s (-0.78%)2:37.731Chuck Mathis · fastest of 19 · top 5 within 2.3s-9.713s (-5.80%)122.8William Trainer-0.3 mph (-0.2%)2:41.106Ethan Goulart · fastest of 49 · top 5 within 0.5s-1.103s (-0.68%)2:41.486Brett Kowalski · fastest of 43 · top 5 within 0.3s-2.262s (-1.38%)119.9Alex Bertagnoli-1.4 mph (-1.2%)+3.755squal +2.661s102.4%qual 101.7%2:52.027Daniel Conway · fastest of 25 · top 5 within 0.7s-0.006s (-0.00%)2:51.889Rob Piekarczyk · fastest of 25 · top 5 within 0.6s-0.958s (-0.55%)113.1Joe McClughan+1.5 mph (+1.4%)+14.158squal +13.582s109.0%qual 108.6%
56 rule changes (HP: 22, SM: 4, B-Spec: 30)15 weight · 8 engine · 6 suspension & brakes · 5 tyres & wheels · 4 induction · 3 cars added · 2 removed · 3 wording · 10 othershowhide
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • B-Spec Update Tire Rules #35984tyres & wheels
  • B-Spec BOP help for the automatic B-Specs #36161weight -50 lbs
  • B-Spec Require hood pins #36233other
  • B-Spec Sonic Caliper Pistons #36238suspension & brakes
  • HP Errant entry in HP production line item #36231other
  • B-Spec Clean up (15-19) Honda Fit MT & CVT Notes Sections #36068induction
  • B-Spec Set expiration date for Nissan Versa (09-11) #36069other
  • B-Spec Delete Redundant Rule 25 #36075removed
  • B-Spec Correct error for rear brakes of Hyundai/Kia #36174suspension & brakes
  • B-Spec Add B14 Kit Part # to Sonic Spec line In #35969induction
  • B-Spec Eliminate redundant sway bar end link part #s from notes In #35970suspension & brakes
  • B-Spec Update Fiat 500 Spec line In #35990other
  • B-Spec Update (15-19) Honda Fit #36067weight +25 lbs
  • HP NIssan 300ZX Z31 to EP #35830cars added
  • HP RX7 1993 and Up Request In EP Spec Lines, classify #36031cars added
  • HP Clean-up Multiple EP RX-8 Spec Lines In EP #36156wording
  • B-Spec Delete trim levels/update language for spec lines #35746other
  • B-Spec Wheel Rules #36066tyres & wheels
  • HP Replace plastic panels #35875other
  • B-Spec Change restrictor from 30mm to 31mm (2015+ Honda Fit) and add 50# #34857induction
  • B-Spec Wheel Offset and Spacer Revision #35466tyres & wheels
  • B-Spec Set Expiration Date for Unused Spec Lines #35742engine
  • B-Spec BOP Adjustment for Yaris iA, 2020+ Versa, and 07-08 Honda Fit #35382weight -125 lbs
  • B-Spec 07-08 Honda Fit Rear Sway Bar part # #35473suspension & brakes
  • HP GCR Correction - Redundant HP Spec Lines #35623engine
  • B-Spec Eliminate Redundant Trans Cooler Rule #35353wording
  • B-Spec Fix Sonic Hatchback MT Spec Line #35371other
  • B-Spec Split Spec Line of Automatic and Manual 2nd Gen (09-14) Fit #35251cars added
  • B-Spec Equalize Mazda 2 Headers and clean up spec line #35259weight
  • B-Spec Rear Sway Bar Request for Nissan Versa and Versa Note 2013- #35323suspension & brakes
  • HP Update 1988-1991 Civic to Match 1988-1991 CRX #35399weight
  • B-Spec B-Spec Hankook Tire for Regionals #35055tyres & wheels
  • B-Spec Update 12-19 Nissan Versa Spec Line & Adjust BOP #35074removed -60 lbs
  • B-Spec Clarifying the ECU and Data Acquisition language #35236engine
  • HP Request to Review Z3 2.5 Spec Line #35073weight +50 lbs
  • HP Parity in HP #35138other
  • HP Spitfire classification #35224engine
  • HP Miata Alternate Head #35253weight -50 lbs
  • HP Triumph GT6 Adjustments #35255weight
  • HP Honda S2000 throttle body #35272induction
  • HP Front Header/Nose Panel Alternate Material For 84-87 CRX #35301engine
  • HP Correction within Triumph TR8 Spec Line #35315engine
  • HP Correction to EP 924S/944 Spec Line #35317weight
  • HP Review Classification of HP Mazda 2 #35318weight +75 lbs
  • B-Spec Mazda 3i 2010-2013 5-Speed Manual Gear Ratios #34820other
  • B-Spec Error Correction #34955engine
  • HP Request to Adjust Weight of 1988-1991 CRX/Civic #35115weight -70 lbs
  • HP Porsche 944/924S Rule Change Request #35002weight
  • HP FP and HP Toyota Corolla #35030weight -43 lbs
  • HP Weight Reduction for Mazda 626 #35031weight -100 lbs
  • HP Triumph GT6 Adjustments #35054weight -30 lbs
  • B-Spec B-Spec Tire #35034tyres & wheels
Virginia International Raceway Runoffs 20232023-09-232:14.029Chris Schaafsma · fastest of 25 · top 5 within 2.7s+0.077s (+0.06%)2:14.681Chris Schaafsma · fastest of 24 · top 5 within 2.5s+2.878s (+2.18%)119.4William Trainer-0.8 mph (-0.7%)2:14.986Danny Steyn · fastest of 52 · top 5 within 0.1s+0.322s (+0.24%)2:16.229Julian DaCosta · fastest of 46 · top 5 within 0.3s-2.878s (-2.07%)120.3Jim Drago+1.1 mph (+0.9%)+1.548squal +0.957s101.1%qual 100.7%2:22.707Riley Salyer · fastest of 25 · top 5 within 1.0s-0.238s (-0.17%)2:23.732Richard Hromin · fastest of 23 · top 5 within 0.4s-0.087s (-0.06%)110.7Chris Daughtery-1.6 mph (-1.4%)+9.051squal +8.678s106.7%qual 106.5%
29 rule changes (HP: 7, SM: 1, B-Spec: 21)10 weight · 6 induction · 3 suspension & brakes · 2 cars added · 2 tyres & wheels · 1 engine · 5 othershowhide
  • B-Spec Initial car classifications and spec lines #34461weight
  • HP Larger chokes #34681induction
  • B-Spec Hyundai Accent Restrictor Plate #34331induction
  • B-Spec Hyundai Accent 2012 Model #34332other
  • HP Correct Intake Valve Size on 1500cc Midget/Spitfire #34419induction
  • HP ITC to FP? #34286other
  • B-Spec T5 Tire Options #33641tyres & wheels
  • B-Spec Allow ZZP Sonic Aluminum Radiator 1.68 #33660induction
  • B-Spec Fasteners for Bumper Caps #33797other
  • B-Spec Allow CAN Bus Connection to Data Systems #33806engine
  • B-Spec Request Ford Fiesta weight reduction 25lbs #33890weight -25 lbs
  • B-Spec BoB Adjustments #34208weight -25 lbs
  • B-Spec T5 Mazda 3 Spec Line Addition #33536cars added
  • B-Spec T5 Ride Height Rules. #33552suspension & brakes
  • B-Spec T5 Spring Allowance #33557suspension & brakes
  • B-Spec T5 Wheel Minimum Weight #33558weight
  • B-Spec Threaded Metal Inserts for Plastic Intake Manifolds #34164induction
  • HP Request to Classify Sonic and Fiesta in HP #34264cars added
  • B-Spec T5 Rules Feedback #33595weight
  • B-Spec Early Model Mini #33363other
  • B-Spec Helper Versus Tender springs. #33866suspension & brakes
  • B-Spec Split up Spec lines for Automatic/Manual 2nd Gen Fit #33292other
  • B-Spec Request to Split Spec Lines for Automatic Models #33270weight
  • B-Spec Tire Rule Request #33350tyres & wheels
  • HP MGB HP Weight Break and/or Hybrid 1/2 Prep in HP #33127weight
  • HP Datsun 510 Help #33568weight -50 lbs
  • HP Review Limited Prep Port Matching Rules #33600induction
  • SM BOP for NB1 and NB2 #32309weight
  • B-Spec Utilize the Data - Make BoP Changes #32179weight -225 lbs
Virginia International Raceway Runoffs 20222022-09-242:13.952Steve Sargis · fastest of 23 · top 5 within 3.9s-0.870s (-0.65%)2:11.803Vesa Silegren · fastest of 21 · top 5 within 6.3s-3.259s (-2.41%)120.2Chris Schaafsma-4.7 mph (-3.8%)2:14.664Danny Steyn · fastest of 60 · top 5 within 0.2s+0.112s (+0.08%)2:19.107Travis Wiley · fastest of 58 · top 5 within 0.9s+2.648s (+1.94%)119.2Jonathan Neudorf-0.6 mph (-0.5%)+7.304squal +0.712s105.5%qual 100.5%2:22.945Steve Introne · fastest of 30 · top 5 within 1.3s+0.577s (+0.41%)2:23.819Riley Salyer · fastest of 30 · top 5 within 0.8s+1.725s (+1.21%)112.3Matt Giuffre+0.1 mph (+0.1%)+12.016squal +8.993s109.1%qual 106.7%
36 rule changes (HP: 25, SM: 1, B-Spec: 10)8 cars added · 7 induction · 6 suspension & brakes · 5 weight · 4 engine · 2 tyres & wheels · 2 wording · 2 othershowhide
  • HP Request to classify VW New Beetle 2.5L in EP #32725cars added
  • HP Request Rotary Injection on Dual Y manifold #32775engine
  • HP Request for Corrado Stroke & Displacement Correction #32985engine
  • B-Spec Request new Mazda Rear Swaybar #32769suspension & brakes
  • HP Subaru BRZ Model Years #32500other
  • B-Spec Request to Remove Part Numbers from Kia/Hyundai Spec Lines #32378induction
  • HP EP MX-5 Global Cup Car #32218weight
  • HP Please Class BMW 128i in EP #32370cars added
  • HP Inconsistency in Body Work Descriptions #32396other
  • HP Mazda RX8 with 13b Rotary #32170induction
  • HP Request Idle control valve clarification #32178engine
  • HP Classify VW New Beetle in HP. #32241cars added
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • B-Spec Request spring attachment #31351suspension & brakes
  • B-Spec Limit Rear Camber to 1.75 Degrees Section 9.1.10.E.35 #31393suspension & brakes
  • B-Spec Letter 31442 Part# Correction #32060wording
  • HP Weight Change for Competition Adjustment #31182weight +45 lbs
  • HP EP Adjustments #31858induction
  • HP 1999 3.8L Ford Mustang to EP? #31635weight
  • HP Improved Touring Tires #32064tyres & wheels
  • B-Spec Request to Classify 2020-21 Versa S #30759cars added
  • B-Spec Request to Classify the Toyota IA sedan & Scion IA Sedan for 2022 #31045cars added
  • B-Spec Mazda 2 Undertray #31442suspension & brakes
  • HP Throttle Body and Idle Air #31800induction
  • HP Incorrect Valve Size Changes in Jan 2022 GCR for FIAT X1/9 #31990engine
  • B-Spec Request to add 2007-2008 Honda Fit #30853cars added
  • HP Porsche 968 Engine Questions #31478induction
  • HP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom #31592tyres & wheels
  • HP Weight Adjustment To Fiat X1/9 Spec Lines, H-Production #31653weight -50 lbs
  • HP 1500 Midget #31665cars added
  • HP BMW Z3 2.5L Spec Line #31724induction
  • HP Request weight requirement for 1500 MG Midget #31802weight
  • HP 944S2 Restrictor #31396induction
  • HP Classing Clarification for 1986 Toyota Corolla FX16 #31527cars added
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
  • HP E&O; MR2 Track #31120wording
Indianapolis Motor Speedway Runoffs 20212021-09-251:54.417Steve Sargis · fastest of 42 · top 5 within 3.7s-3.004s (-2.56%)1:56.188Steve Sargis · fastest of 42 · top 5 within 2.9s-1.381s (-1.17%)122.0William Trainer1:57.695Brian Henderson · fastest of 90 · top 5 within 0.5s-0.611s (-0.52%)1:58.837Brian Henderson · fastest of 88 · top 5 within 0.3s-0.263s (-0.22%)119.8Kyle Greenhill+2.649squal +3.278s102.3%qual 102.9%2:03.121John Phillips · fastest of 60 · top 5 within 1.2s-0.045s (-0.04%)2:03.971Steve Introne · fastest of 60 · top 5 within 0.4s-0.079s (-0.06%)111.2David Oliveira+7.783squal +8.704s106.7%qual 107.6%
44 rule changes (HP: 21, SM: 1, B-Spec: 22)10 cars added · 9 suspension & brakes · 7 weight · 6 induction · 2 engine · 2 tyres & wheels · 3 wording · 5 othershowhide
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
  • HP Request to Allow F22c Engine for 2000-2003 Honda S2000 #30548engine
  • HP Request a review of the S14 240SX in EP. #30873weight -200 lbs
  • B-Spec B-Spec Mazda2 Header Update #30884weight
  • HP Lotus/Caterham 7 America Request #30392engine
  • HP Request to classify ITC Plymouth Arrow #30588cars added
  • HP Reclassification of the 1984/85 BMW 318i from FP to HP #30661cars added
  • HP Reclassify Daimler SP 250 #30721cars added
  • B-Spec Transmission Cooler Requests #30079other
  • B-Spec Request to classify the 07 Honda Fit #30083cars added
  • B-Spec Request Ford Fiesta Eibach Rear Sway Bar Part Number 35143.320 #30340suspension & brakes
  • B-Spec Restrictor rule #30474induction
  • B-Spec Rear wipers on all cars #30585other
  • HP 924 Brakes- and Thank You. #30614suspension & brakes
  • HP Clarify Application of Percentage Based Weight Penalties #30669weight
  • HP Correct Induction Error on new HP Mazda 626 Spec Line #30702induction
  • HP Volvo 142 spec line complete. #29479cars added
  • HP Request to Classify 93-98 Volkswagen Golf to HP #29790cars added
  • HP Appeal of Request to Move Porsche 924 to HP #30132cars added
  • HP Change Classification of 84-87 Mazda 626 from FP to HP #30350cars added
  • HP Fiat X1/9 brake rotors #30423suspension & brakes
  • B-Spec Allow 4 lug hub conversion to R60 and R61 MINI #29863suspension & brakes
  • B-Spec Mazda2 header replacement #29944weight +50 lbs
  • B-Spec Honda Fit Years on Spec Line #30078other
  • B-Spec Hyundai/Kia restrictor size incorrect #30380induction
  • B-Spec Clarify tire compound in rules #30387tyres & wheels
  • HP Request to Classify 2012-2015 MINI Cooper Coupe in HP #30167cars added
  • HP Request clarification on VW 1.8 Rabbit GTI Spec Line #30368wording
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • B-Spec Spec Tire Recommendation #29480tyres & wheels
  • B-Spec Make restrictor thickness unique for B Spec #30349induction
  • B-Spec Request to Classify Hyundai Accent (RB) 2012-2019 #29484cars added
  • B-Spec Countryman production years incorrect #29864other
  • B-Spec Toyota Yaris Model Year Corrections #29896wording
  • B-Spec Correction spec lines for ride height Mini Cooper all models #29952suspension & brakes
  • B-Spec Request to Allow Removal of Stock Brake Dust Shields #29981suspension & brakes
  • B-Spec Request to allow OBX header and restrictor to R55 Clubman 08-10 #30024induction
  • HP Alternate Front Brake Rotors and Calipers for EP AH 3000 #29893suspension & brakes
  • B-Spec Request clarification of B14 shock package for any and all cars #29483suspension & brakes
  • B-Spec Cleanup of spec lines #29495wording
  • HP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines #29195weight -50 lbs
  • HP Correct Wording for Level 1 and Level 2 Induction Systems #29406induction
  • HP Weight Reduction for Datsun Roadster #29409weight -75 lbs
  • HP EP TR8 Adjustment #29512weight -100 lbs
Road America Runoffs 20202020-10-022:39.695Daniel Meller · fastest of 19 · top 5 within 3.3s2:47.444Steve Sargis · fastest of 15 · top 5 within 6.1s123.1William Trainer2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill-3.696squal +2.514s97.8%qual 101.6%2:52.033David Daughtery · fastest of 25 · top 5 within 1.9s2:52.847Riley Salyer · fastest of 25 · top 5 within 0.8s111.5Robert Iversen+5.403squal +12.338s103.2%qual 107.7%
40 rule changes (HP: 21, SM: 2, B-Spec: 17)7 cars added · 6 engine · 6 induction · 4 weight · 3 suspension & brakes · 1 tyres & wheels · 7 wording · 6 othershowhide
  • HP 84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O #29458tyres & wheels
  • SM Radiator E&O Clarifications #29294engine
  • B-Spec Allowance Versus Requirement for R56 Mini Cooper #29127induction
  • HP EP BMW Z3 Rule Clarification #28998engine
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • HP Request to Classify Porsche 911 2.0L #28456cars added
  • HP Request Dual Carbs for 1.8 VW GTI Mk1 #28922engine
  • B-Spec Request to change units on wheelbase for consistency with wording #28786wording
  • HP BMW Cylinder Head Casting and Part Numbers #28708engine
  • B-Spec Transmission cooler for automatic equipped cars #28171weight
  • B-Spec Spring Update for all models #28384suspension & brakes
  • B-Spec Request to Cleanup Sunroof Wording #28401wording
  • B-Spec B-Spec Balance of Performance based on 2018 and 2019 seasons #28394weight -25 lbs
  • HP Request to Classify 1990-1994 Mazda Protege #28381cars added
  • HP Error in Mini Cooper Spec Line #28713wording
  • HP Caterham 7 Spec Line #28498engine
  • B-Spec Request for Model Years Updating #27850other
  • B-Spec Request to classify Min Cooper models #27861cars added
  • B-Spec remove fog lights #27947wording
  • B-Spec add sonic sedan #27948cars added
  • HP Letter #27917 #28085induction
  • HP Request to Classify 2007 - 2013 Mini Cooper Convertible #28111cars added
  • HP Allow HP Datsun 510 Under Level 2 to Utilize Datsun Z Brakes #28121suspension & brakes
  • HP Request to allow 40 DCOE carb for the Datsun 510 #28195induction
  • HP Request Ford Fiesta Weight Adjustment #28337weight
  • B-Spec Request for Automatic Transmission Inclusion #27686other
  • B-Spec Request to Add Transmission Coolers to Automatics #27687wording
  • HP Request for Help for Datsun 1200 #27934induction
  • B-Spec Add Yaris Sedan #26797cars added
  • B-Spec Add 2011-2016 Fiesta Sedan #26798cars added
  • B-Spec add 2015-2019 Kia Rio #26799other
  • B-Spec Error and Omissions #27858induction
  • HP Update years for the Mazda2, Honda Fit, & Mini #27782other
  • HP Allow Dry Sump, Limited Prep Porsche 914 #27814other
  • HP Please Allow Alternate Rear Axle Housing for RWD Toyota Corolla #27854other
  • HP Request to List Mazda Miata Throttle Body Size #27907induction
  • HP HP VW Rabbit Convertible 1.6L #1922 and 32mm chokes #27917weight
  • B-Spec Request for Correction of Production Years for Mini Cooper #27226wording
  • HP Request to Correct Track of 1988-91 Honda Civic #27487wording
  • HP Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency #27661engine
Virginia International Raceway Runoffs 20192019-10-052:14.822Steve Sargis · fastest of 29 · top 5 within 1.1s2:15.062Ron Bartell · fastest of 28 · top 5 within 1.2s124.9William Trainer2:14.552Todd Buras · fastest of 60 · top 5 within 0.2s2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s119.8Jim Drago+1.397squal -0.270s101.0%qual 99.8%2:22.368Frank Schwartz · fastest of 26 · top 5 within 0.8s2:22.094David Daughtery · fastest of 24 · top 5 within 0.8s112.2John Phillips+7.032squal +7.546s105.2%qual 105.6%
22 rule changes (HP: 10, SM: 4, B-Spec: 8)3 cars added · 3 tyres & wheels · 2 induction · 2 weight · 1 engine · 1 suspension & brakes · 6 wording · 4 othershowhide
  • B-Spec Request for Corrections to 9.1.10 E Item #27 D and E #27224wording
  • B-Spec Remove wording in the B-spec rules #27388wording
  • B-Spec Request to add 2013 Honda Fit model year #27491other
  • HP Request bodywork for Austin Healey Bugeye Sprite MK1 #27106other
  • HP Request to classify the GMX5 2019 #27263cars added
  • HP level one susp. component rule #27270suspension & brakes
  • HP Clarification of Carb Rules - Prep 1 #27300induction
  • HP Clarification of Carb Rules - Prep 2 #27301induction
  • HP Request Miata Eligibility - 2003 #27121other
  • B-Spec Request to allow OBX Header for 2007-10 Mini Cooper #26977other
  • HP Rollcenter Correction Clarification #25873tyres & wheels
  • HP Hardtops #26476wording
  • B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132wording
  • HP Do Something About the Toyota Yaris In H Production #25834weight +130 lbs
  • HP Request to Allow 2011+ Fiesta to Change Bolt Pattern on Wheels #25929tyres & wheels
  • SM Request to allow aftermarket fuel filters. #26370wording
  • SM Request 99-00 replacement Wire harnesses #25602engine
  • SM Organize and Clarify 9.1.7.C.1.o. #25913weight
  • SM Strike Tire Tread Language #26123tyres & wheels
  • B-Spec Request to classify Canadian Nissan Micra Cup cars #25216cars added
  • B-Spec Request updated Toyota Yaris Spec Lines #25483cars added
  • B-Spec Update wording of exhaust #26022wording
Sonoma Raceway Runoffs 20182018-10-101:54.070Brian Linn · fastest of 16 · top 5 within 2.8s1:54.434Jason Isley · fastest of 16 · top 5 within 3.3s109.3Michael H Miller1:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s102.2Danny Steyn+0.844squal +0.285s100.7%qual 100.2%1:59.321Oscar Jackson · fastest of 14 · top 5 within 1.2s1:59.852Jake Pipal · fastest of 12 · top 5 within 1.0s101.0Frank Schwartz+5.418squal +5.251s104.7%qual 104.6%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:57.421Jason Isley · fastest of 46 · top 5 within 0.9s1:57.569Vesa Silegren · fastest of 40 · top 5 within 1.1s1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s+1.531squal +0.885s101.3%qual 100.8%2:03.166David Daughtery · fastest of 18 · top 5 within 2.5s2:04.050David Daughtery · fastest of 18 · top 5 within 2.3s+6.481squal +5.745s105.5%qual 104.9%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:39.954Jason Isley · fastest of 34 · top 5 within 1.5s1:40.442Jason Isley · fastest of 34 · top 5 within 0.4s1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s+0.322squal +0.560s100.3%qual 100.6%1:46.865David Daughtery · fastest of 10 · top 5 within 1.0s1:46.930John Heinricy · fastest of 9 · top 5 within 0.6s+6.488squal +6.911s106.5%qual 106.9%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:17.369Jason Isley · fastest of 18 · top 5 within 2.5s2:17.981Alan (Aj) Hulse · fastest of 17 · top 5 within 1.1s2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s+6.086squal +1.292s104.4%qual 100.9%2:29.366John Heinricy · fastest of 15 · top 5 within 1.2s2:29.465John Heinricy · fastest of 15 · top 5 within 0.4s+11.484squal +11.997s108.3%qual 108.7%

By track

TrackEvents Typical % of HP 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 HP'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.