BoP Lab / Buttonwillow Raceway Park

F6 vs P pace at Buttonwillow Raceway Park

Quickest here: P 1:32.872 Jim Devenport, Cal Club 2025 qualifying

F6Psolid race · dashed qualifying · slower is lower

	Event	F6			P
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs F6
	Cal Club 2026 CALCL262026-02-21				1:38.716Kevin Mitz · fastest of 3 · top 3 within 3.1s+5.844s (+6.29%)	1:37.287John Manfroy · fastest of 3 · top 3 within 3.5s+3.315s (+3.53%)	160.4John Manfroy+18.7 mph (+13.2%)
6 rule changes (P: 6)2 induction · 2 weight · 1 suspension & brakes · 1 othershowhide 2026-01-01 P Request to Continue to Allow Carbon Brakes #39476suspension & brakes 2025-09-01 P 13B Rotary Engine Rules Change Request #38856induction 2025-09-01 P Add Radical Cup series Radical SR3 spec line to Table 1 #38916other 2025-09-01 P Clarify spec line cars language #38943weight 2025-08-01 P RM 25-05 - Prototype Engine Table A, 2 Cycle Restrictor Change #38929induction 2025-05-01 P Add missing punctuation marks #38150weight
	Cal Club 2025 CALCL252025-02-22				1:32.872Jim Devenport · fastest of 3 · top 3 within 8.1s	1:33.972Jim Devenport · fastest of 3 · top 3 within 7.7s	141.7Jim Devenport
2 earlier rule changes on record, in force before Cal Club 2025 (from 2025)1 engine · 1 tyres & wheelsshowhide 2025-02-01 P Correct text in engine table notes #37606engine 2025-02-01 P Update Prototype class designation #37653tyres & wheels

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. 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.