BoP Lab / Buttonwillow Raceway Park

FE vs FM vs SRF vs P1 pace at Buttonwillow Raceway Park

Quickest here: FE 1:47.040 Brandon Chappell, Super Tour Apr 2018 race · FM 1:45.954 Mike Anderson, Super Tour Apr 2018 race · SRF 1:44.060 Vince Balch, Super Tour Apr 2017 qualifying · P1 1:34.975 Jim Devenport, Super Tour Feb 2020 qualifying

Lap times% of FE

FEFMSRFP1solid race · dashed qualifying · slower is lower

FEFMSRFP1solid race · dashed qualifying · each class's best lap as a share of FE's at the same event (the reference class, changeable above); 100% is level, higher is quicker

	Event	FE			FM					SRF					P1
	Event	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 2020 ST20FEB212020-02-21														1:34.975Jim Devenport · fastest of 4 · top 4 within 7.1s-2.683s (-2.75%)	1:36.224Jim Devenport · fastest of 4 · top 4 within 5.9s-2.632s (-2.66%)	148.8Johnnie Crean+15.3 mph (+11.5%)
22 rule changes (FE: 6, SRF: 5, P1: 11)5 weight · 4 tyres & wheels · 2 engine · 2 induction · 2 suspension & brakes · 1 removed · 1 wording · 5 othershowhide 2020-02-01 P1 Extend date for removing sealed DP02-spec 2.0L option #28046weight 2020-01-01 FE Request for FE / FE2 preparation rules update #27722weight 2020-01-01 P1 Remove sealed DP02-spec 2.0 MZR spec #26753induction 2020-01-01 P1 Update Revised Spec Line F #27745weight 202-01-01 SRF SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes 2019-12-01 FE FE / FE2 Update Rules #27624weight 2019-12-01 SRF SRF Tire Warmer Rule #27622tyres & wheels 2019-12-01 SRF SRF / SRF3 Nose Weight Reduction #27706weight 2019-12-01 SRF SRF / SRF3 Majors & Regional Class Updates #27723other 2019-10-01 FE FE Wet Tire E&O #27365tyres & wheels 2019-08-01 P1 E&O Transmissions #27098other 2019-07-01 FE FE Tire Update #27029tyres & wheels 2019-07-01 P1 E&O Transmissions #27005tyres & wheels 2019-07-01 P1 Move minimum height provision to #27031removed 2019-07-01 P1 Remove duplicative fender louver provision #27033induction 2019-07-01 SRF SRF Dash Windscreen Kit #27028other 2019-05-31 FE FE Anti-Roll Bar Clarification #26912suspension & brakes 2019-05-31 FE FE / FE2 Updated Bubble Tail Rule #26913other 2019-05-31 P1 Missing word E&O #26919other 2019-05-31 P1 E&O correction to GCR 9.1.8.C.C. #26927wording 2019-05-01 P1 Clean up reference to engine table #26648engine 2019-05-01 P1 Remove redundant spec line #26692engine
	Super Tour Apr 2019 ST19APR262019-04-26	1:49.749Jeff Read · only car+2.153s (+2.00%)	1:50.132Jeff Read · fastest of 2+3.092s (+2.89%)	119.6Joe Reppert	1:49.608Mike Anderson · fastest of 3 · top 3 within 5.6s+3.285s (+3.09%)	1:49.409Mike Anderson · fastest of 3 · top 3 within 4.9s+3.455s (+3.26%)	121.2Mike Anderson	-0.723squal -0.141s	99.3%qual 99.9%						1:37.658Jim Devenport · fastest of 3 · top 3 within 8.6s-1.339s (-1.35%)	1:38.856Jim Devenport · fastest of 3 · top 3 within 4.2s+1.745s (+1.80%)	133.5Jeffrey Lederman	-11.276squal -12.091s	89.8%qual 89.0%
7 rule changes (FE: 1, P1: 6)3 engine · 2 induction · 1 tyres & wheels · 1 wordingshowhide 2019-04-01 P1 Clean Up Engine Table Language #26590engine 2019-03-01 FE Request to Update Hoosier Rain Tire Part Number for the FE cars #26235tyres & wheels 2019-03-01 P1 Move single-seat closed cockpit provision to #26376wording 2019-02-01 P1 Correct errors in GCR section 9.1.8.C.J #26144engine 2019-01-01 P1 Remove redundant inlet restrictor provisions #25877induction 2019-01-01 P1 Clarify Honda K20A-FD2 parts requirement #25949engine 2019-01-01 P1 Correct GCR section 9.1.8.C.J errors #25966induction
	Super Tour Apr 2018 BUTTRA182018-04-27	1:47.596John Yeatman · fastest of 3 · top 3 within 13.1s-1.154s (-1.06%)	1:47.040Brandon Chappell · fastest of 3 · top 3 within 11.2s-1.159s (-1.07%)		1:46.323Mike Anderson · fastest of 9 · top 5 within 2.1s+0.367s (+0.35%)	1:45.954Mike Anderson · fastest of 9 · top 5 within 3.3s-0.317s (-0.30%)		-1.086squal -1.273s	99.0%qual 98.8%						1:38.997Chip Romer · fastest of 6 · top 5 within 7.8s+2.677s (+2.78%)	1:37.111Chip Romer · fastest of 6 · top 5 within 13.4s-0.316s (-0.32%)		-9.929squal -8.599s	90.7%qual 92.0%
No rule changes on record between these events
	Super Tour Apr 2017 BUTTRA172017-04-28	1:48.750Brandon Aleckson · fastest of 2	1:48.199Brandon Aleckson · fastest of 2		1:45.956Mike Anderson · fastest of 8 · top 5 within 2.0s	1:46.271Mike Anderson · fastest of 10 · top 5 within 2.1s		-1.928squal -2.794s	98.2%qual 97.4%	1:44.060Vince Balch · fastest of 8 · top 5 within 18.6s	2:01.122Mike Miserendino · fastest of 7 · top 5 within 1.8s		+12.923squal -4.690s	111.9%qual 95.7%	1:36.320Jim Devenport · fastest of 5 · top 5 within 6.9s	1:37.427Parker Nicklin · fastest of 5 · top 5 within 6.2s		-10.772squal -12.430s	90.0%qual 88.6%

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.