BoP Lab / Buttonwillow Raceway Park

F500 vs F6 vs FB vs BSpc pace at Buttonwillow Raceway Park

Lap times across years say as much about the weather as the class. % of F500 is each class's best lap as a share of F500'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: F500 1:58.561 Lance Spiering, Super Tour Feb 2022 race · F6 1:59.670 Jeff Jorgenson, Super Tour Feb 2024 race · FB 1:38.870 Gary Hickman, Super Tour Apr 2018 race

% of F500Lap times

F500F6FBBSpcsolid race · dashed qualifying · slower is lower

F500F6FBBSpcsolid race · dashed qualifying · each class's best lap as a share of F500's at the same event (the reference class, changeable above); 100% is level, higher is quicker

	Event	F500			F6					FB					BSpc
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs F500	% of F500	Qual best	Race best	Trap	vs F500	% of F500	Qual best	Race best	Trap	vs F500	% of F500
	Super Tour Feb 2024 CALCL242024-02-23				2:00.926Jeff Jorgenson · only car	1:59.670Jeff Jorgenson · only car	104.7Jeff Jorgenson
No rule changes on record between these events
	Super Tour Feb 2022 CALCL222022-02-17	2:03.309Lance Spiering · only car	1:58.561Lance Spiering · only car	111.9Lance Spiering
No rule changes on record between these events
	Super Tour Apr 2018 BUTTRA182018-04-27									1:39.142Gary Hickman · fastest of 2-3.130s (-3.06%)	1:38.870Gary Hickman · fastest of 2-1.241s (-1.24%)
No rule changes on record between these events
	Super Tour Apr 2017 BUTTRA172017-04-28									1:42.272John LaBrie · fastest of 2	1:40.111Gary Hickman · fastest of 2

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 F500" is the class's best as a share of F500'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 F500'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.