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BoP Lab / Classes / CFC

CFC vs BSpc vs SSM vs ITB 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)
1DASB SpecB-specB-SpecBSvsBSpc×BSpecC6CFCFC×CTACTBCTCCTDEPEPxF5F6F500F1000FAFBFCFEFE 2FE2FFFMFPFRIFVFXGT-1GT-2GT-XGT1GT2GT3GT3UGTAGTLGTXHPIT7ITAvsITB×ITCITEITE-OITRITSPP1P2PXS7SMSM SMSESMSE-TSMXSPUSRFSRF 3SRF3vsSSM×STLSTUSUNT1T2T3T4TTAUnknownHide inactive classes
Reference · what % is measured against
Tracks · untick to narrow
1:502:002:101 rule change between Super Tour Aug 2020 and Super Tour Feb 20211 ▾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)BSpc race best at Super Tour Feb 2021: 2:15.276 (Thomas Lepper)BSpc qualifying best at Super Tour Feb 2021: 2:15.802 (Thomas Lepper)Pittsburgh International Race Complex · Super Tour Aug 2020Super Tour Aug2020Buttonwillow Raceway Park · Super Tour Feb 2021Super Tour Feb2021
CFCBSpcSSMITBsolid race · dashed qualifying · slower is lower
100%1 rule change between Super Tour Aug 2020 and Super Tour Feb 20211 ▾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)Pittsburgh International Race Complex · Super Tour Aug 2020Super Tour Aug2020Buttonwillow Raceway Park · Super Tour Feb 2021Super Tour Feb2021
CFCBSpcSSMITBsolid 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
EventCFCBSpcSSMITB
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 20212021-02-192:15.802Thomas Lepper · fastest of 3 · top 3 within 3.8s2:15.276Thomas Lepper · fastest of 3 · top 3 within 2.4s95.8Fritz Wilke
1 rule change (ITB: 1)1 cars addedshowhide
  • ITB 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
5 earlier rule changes on record, in force before Super Tour Aug 2020 (from 2019)2 weight · 1 cars added · 1 induction · 1 tyres & wheelsshowhide
  • ITB Cleanup 4.f Traction control #28609tyres & wheels
  • ITB Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbs
  • ITB Request to allow 07-11 Mini in ITB as BPSEC configuration #26997weight
  • ITB Request clarification on 9.1.3 D1.A.2 #26237induction
  • ITB Request to Dual-Class Honda Fit and B-Spec Cars Into ITC and #25347cars added

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
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.