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BoP Lab / Buttonwillow Raceway Park

FE vs FB vs SRF vs B-Spec pace at Buttonwillow Raceway Park

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
ASB SpecvsB-Spec×BSpcEPF5F6F500FAvsFB×FCFE×FE 2FE2FFFMFPFVFXGT1GT2GT3GT3UGTLGTXHPPP1P2PXSMSMXvsSRF×SRF3STLSTUT1T2T3T4
Reference class · the others' laps as a share of this one's at the same event, so years compare despite weather; + a class above to measure against it
Track configuration
EventFEFBSRFB-Spec
Qual bestRace bestTrapQual bestRace bestTrapvs FE% of FEQual bestRace bestTrapvs FE% of FEQual bestRace bestTrapvs FE% of FE
Super Tour Apr 2019 ST19APR262019-04-26
5 earlier rule changes on record, in force before Super Tour Apr 2019 (from 2019)3 cars added · 1 tyres & wheels · 1 wording · B-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted. · B-Spec adds Canadian Nissan Micra Cup Car, 1598 cc, 2450 lbs minimum, with Micra Cup suspension kit allowed. · B-Spec Toyota Yaris 12-18 added with 1491cc engine, 3.55 first gear, Bilstein B14 suspension, K&N intake allowed. · B-Spec exhaust wording clarified: oxygen sensors must stay stock location, primary catalyst unmodifiable.showhide
  • B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132cars addedaddedB-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted.
  • FE Request to Update Hoosier Rain Tire Part Number for the FE cars #26235tyres & wheels
  • B-Spec Request to classify Canadian Nissan Micra Cup cars #25216cars addedaddedB-Spec adds Canadian Nissan Micra Cup Car, 1598 cc, 2450 lbs minimum, with Micra Cup suspension kit allowed.
  • B-Spec Request updated Toyota Yaris Spec Lines #25483cars addedaddedB-Spec Toyota Yaris 12-18 added with 1491cc engine, 3.55 first gear, Bilstein B14 suspension, K&N intake allowed.
  • B-Spec Update wording of exhaust #26022wordingwordingB-Spec exhaust wording clarified: oxygen sensors must stay stock location, primary catalyst unmodifiable.

Best is the class's fastest lap in that event's qualifying or race sessions, with the driver who set it, how many cars set a time that session and how close the top five were; a best from fewer than three cars is greyed. With two or more classes, "vs" is the gap of each class's best to the first class's at the same event. "% of FE" is the class's best as a share of FE's best at the same event (100% is level, less is quicker): weather and track condition move every class together, so this compares across years where the raw times do not. It still breaks when FE's own field changes or one session was wet and another dry. Newest event first. The coloured figure under each value is the change from the previous event that has one (green is quicker, red slower). Whole laps only, so events with different sector layouts still compare. Weather and track condition are not accounted for.