BoP Lab / Buttonwillow Raceway Park

FM vs F6 vs SRF vs GTL pace at Buttonwillow Raceway Park

Quickest here: FM 1:45.954 Mike Anderson, Super Tour Apr 2018 race · SRF 1:44.060 Vince Balch, Super Tour Apr 2017 qualifying · GTL 1:58.269 Joe Huffaker, Super Tour Feb 2020 race

Lap times% of FM

FMF6SRFGTLsolid race · dashed qualifying · slower is lower

FMF6SRFGTLsolid race · dashed qualifying · each class's best lap as a share of FM's at the same event (the reference class, changeable above); 100% is level, higher is quicker

	Event	FM			F6					SRF					GTL
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs FM	% of FM	Qual best	Race best	Trap	vs FM	% of FM	Qual best	Race best	Trap	vs FM	% of FM
	Super Tour Feb 2020 ST20FEB212020-02-21														1:59.062Joe Huffaker · fastest of 5 · top 5 within 10.7s-1.294s (-1.08%)	1:58.269Joe Huffaker · fastest of 5 · top 5 within 13.1s-1.806s (-1.50%)	125.6Joe Huffaker+15.1 mph (+13.6%)
16 rule changes (SRF: 5, GTL: 11)4 cars added · 4 weight · 2 engine · 2 tyres & wheels · 1 suspension & brakes · 3 othershowhide 2020-02-01 GTL Windshield Clips #27323other 2020-01-01 GTL Request Factory Five Daytona coupe classification #26308cars added 2020-01-01 GTL Request to Classify the MK1 two door Jetta #27648cars added 202-01-01 SRF SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes 2019-12-01 GTL 88-91 Honda CRX Spec Line Correction #27233weight 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 2019-08-31 GTL Fun Cup Beetle #27334weight 2019-08-01 GTL GTL #26960weight 2019-07-01 GTL Request CRZ wheelbase change #26896tyres & wheels 2019-07-01 SRF SRF Dash Windscreen Kit #27028other 2019-05-01 GTL Request to Classify VW Fun Cup Beetle #25986cars added 2019-05-01 GTL Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine 2019-05-01 GTL Request to Classify Ligier JS2 R #26535cars added 2019-05-01 GTL Request for GTL Mazda 13B SIR Increase with Penalty #26572engine
	Super Tour Apr 2019 ST19APR262019-04-26	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											2:00.356Joe Huffaker · fastest of 2+1.537s (+1.29%)	2:00.075Joe Huffaker · fastest of 2+1.716s (+1.45%)	110.6Taz Harvey	+10.666squal +10.748s	109.7%qual 109.8%
6 rule changes (GTL: 6)2 cars added · 2 weight · 1 induction · 1 suspension & brakesshowhide 2019-04-01 GTL Request Ride Height Clarification #26600suspension & brakes 2019-03-01 GTL Request Mazda 12a Rotary SIR Increase #26081induction 2019-03-01 GTL Request to Classify Mustang 2 Body in GTL #26222cars added 2019-01-01 GTL Request for GTL Mini Adjustments #25754weight 2019-01-01 GTL BMC thru Rover Group remove long inactive mini #25771weight 2019-01-01 GTL GTX Homologation table update #26034cars added
	Super Tour Apr 2018 BUTTRA182018-04-27	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%)												1:58.819Joe Huffaker · fastest of 4 · top 4 within 11.5s-6.719s (-5.35%)	1:58.359Joe Huffaker · fastest of 5 · top 5 within 10.8s-7.836s (-6.21%)		+12.405squal +12.496s	111.7%qual 111.8%
No rule changes on record between these events
	Super Tour Apr 2017 BUTTRA172017-04-28	1:45.956Mike Anderson · fastest of 8 · top 5 within 2.0s	1:46.271Mike Anderson · fastest of 10 · top 5 within 2.1s							1:44.060Vince Balch · fastest of 8 · top 5 within 18.6s	2:01.122Mike Miserendino · fastest of 7 · top 5 within 1.8s		+14.851squal -1.896s	114.0%qual 98.2%	2:05.538John Bower · fastest of 4 · top 4 within 7.0s	2:06.195Bill Okell · fastest of 4 · top 4 within 6.1s		+19.924squal +19.582s	118.7%qual 118.5%

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