BoP Lab / Buttonwillow Raceway Park
FE vs FM vs FB vs AS pace at Buttonwillow Raceway Park
Lap times across years say as much about the weather as the class. % of FE is each class's best lap as a share of FE'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.
Quickest here: AS 1:55.849 Roger Eagleton, Super Tour Feb 2025 race
| Event | FE | FM | FB | AS | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs FE | % of FE | Qual best | Race best | Trap | vs FE | % of FE | Qual best | Race best | Trap | vs FE | % of FE | |||
| Super Tour Feb 2026 CALCL262026-02-21 | 1:56.812Ross Murray · fastest of 2+0.367s (+0.32%) | 1:56.314Ross Murray · fastest of 2+0.465s (+0.40%) | 135.2Ross Murray+26.5 mph (+24.4%) | |||||||||||||||||
14 rule changes (FE: 3, AS: 11)5 engine · 5 weight · 2 induction · 2 othershow
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| Super Tour Feb 2025 CALCL252025-02-22 | 1:56.445Roger Eagleton · fastest of 3 · top 3 within 4.0s | 1:55.849Roger Eagleton · fastest of 4 · top 4 within 5.3s | 108.7Roger Eagleton | |||||||||||||||||
87 rule changes (FE: 26, AS: 61)14 engine · 14 weight · 11 cars added · 10 suspension & brakes · 10 tyres & wheels · 4 aero · 3 induction · 6 wording · 15 othershow
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| Super Tour Apr 2019 ST19APR262019-04-26 | ||||||||||||||||||||
About this data
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.