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BoP Lab / Classes / CFC

CFC vs ITR vs SSM vs F500 pace at every track

Lap times across years say as much about the weather as the class. % of CFC is each class's best lap as a share of CFC'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)
Reference · what % is measured against
Tracks · untick to narrow
1:502:002:102:202:306 rule changes between Super Tour Jan 2017 and Super Tour Aug 20206 ▾2 rule changes between Super Tour Aug 2020 and Super Tour Feb 20222 ▾CFC race best at Super Tour Aug 2020: 1:48.302 (Curtis Easterling)CFC qualifying best at Super Tour Aug 2020: 1:48.589 (Curtis Easterling)F500 race best at Super Tour Jan 2017: 2:26.224 (Jack Walbran)F500 race best at Super Tour Feb 2022: 1:58.561 (Lance Spiering)F500 qualifying best at Super Tour Jan 2017: 2:27.885 (Jack Walbran)F500 qualifying best at Super Tour Feb 2022: 2:03.309 (Lance Spiering)Sebring International Raceway · Super Tour Jan 2017Super Tour Jan2017Pittsburgh International Race Complex · Super Tour Aug 2020Super Tour Aug2020Buttonwillow Raceway Park · Super Tour Feb 2022Super Tour Feb2022
CFCITRSSMF500solid race · dashed qualifying · slower is lower
100%6 rule changes between Super Tour Jan 2017 and Super Tour Aug 20206 ▾2 rule changes between Super Tour Aug 2020 and Super Tour Feb 20222 ▾CFC race best at Super Tour Aug 2020: 100.0% of CFC's (Curtis Easterling)CFC qualifying best at Super Tour Aug 2020: 100.0% of CFC's (Curtis Easterling)Sebring International Raceway · Super Tour Jan 2017Super Tour Jan2017Pittsburgh International Race Complex · Super Tour Aug 2020Super Tour Aug2020Buttonwillow Raceway Park · Super Tour Feb 2022Super Tour Feb2022
CFCITRSSMF500solid race · dashed qualifying · each class's best lap as a share of CFC's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventCFCITRSSMF500
Qual best Race best Trap Qual best Race best Trap vs CFC % of CFC Qual best Race best Trap vs CFC % of CFC Qual best Race best Trap vs CFC % of CFC 
Buttonwillow Raceway Park Super Tour Feb 20222022-02-172:03.309Lance Spiering · only car1:58.561Lance Spiering · only car111.9Lance Spiering
2 rule changes (ITR: 2)1 cars added · 1 inductionshowhide
  • ITR Class Turbo Cars #29774induction
  • ITR Request to classify a 2003 Honda Accord #28898cars added
Pittsburgh International Race Complex Super Tour Aug 20202020-08-281:48.589Curtis Easterling · only car1:48.302Curtis Easterling · only car116.9Curtis Easterling
6 rule changes (ITR: 6)2 cars added · 2 weight · 1 induction · 1 tyres & wheelsshowhide
  • ITR Cleanup 4.f Traction control #28609tyres & wheels
  • ITR Request to Classify 2008-2013 BMW 128i #26724cars added
  • ITR Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbs
  • ITR Please Classify the '13-'14 Subaru BRZ/ Scion FRS in IT #27242cars added
  • ITR Request Reduction of Minimum weight for 2000-2003 Honda S2000 #26096weight +20 lbs
  • ITR Request clarification on 9.1.3 D1.A.2 #26237induction
Sebring International Raceway Super Tour Jan 20172017-01-132:27.885Jack Walbran · fastest of 5 · top 5 within 6.8s2:26.224Jack Walbran · fastest of 5 · top 5 within 7.3s

By track

TrackEvents Typical % of CFC Best Latest 
Buttonwillow Raceway Park10 of 1 with CFC
Pittsburgh International Race Complex1100.0%100.0%Super Tour Aug 2020100.0%Super Tour Aug 2020
Sebring International Raceway10 of 1 with CFC
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 CFC'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.