BoP Lab / Buttonwillow Raceway Park

F6 vs SRF vs GT3 pace at Buttonwillow Raceway Park

Quickest here: SRF 1:44.060 Vince Balch, Super Tour Apr 2017 qualifying · GT3 1:40.093 Michael Lewis, Super Tour Apr 2018 race

F6SRFGT3solid race · dashed qualifying · slower is lower

	Event	F6			SRF				GT3
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs F6	Qual best	Race best	Trap	vs F6
	Super Tour Feb 2020 ST20FEB212020-02-21								1:50.937Michael Lewis · fastest of 10 · top 5 within 5.7s-0.936s (-0.84%)	1:51.160Michael Lewis · fastest of 11 · top 5 within 3.8s-3.520s (-3.07%)	139.3Taz Harvey+16.7 mph (+13.6%)
16 rule changes (SRF: 5, GT3: 11)4 cars added · 4 induction · 1 aero · 1 engine · 1 suspension & brakes · 1 tyres & wheels · 1 weight · 3 othershowhide 2020-02-01 GT3 Windshield Clips #27323other 2020-01-01 GT3 Request Factory Five Daytona coupe classification #26308cars added 2020-01-01 GT3 Request restrictor size change request #26958induction 2020-01-01 GT3 Request to Classify Alfa Romeo 4C #27322cars added 2020-01-01 GT3 Request for Mazda 2.5l MZR/L5-VE #27570induction -245 lbs 2020-01-01 GT3 GT3 turbo engines add Honda #28033induction 2020-01-01 GT3 GT3 wing end plate #28035aero 202-01-01 SRF SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes 2019-12-01 GT3 Request to Add SR16VE to GT-3 Spec Lines #27357cars added 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 GT3 Requesting Increase in Choke Diameter for Mazda 12A Bridgeport #27043induction 2019-07-01 SRF SRF Dash Windscreen Kit #27028other 2019-05-01 GT3 Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine 2019-05-01 GT3 Request to Classify Ligier JS2 R #26535cars added
	Super Tour Apr 2019 ST19APR262019-04-26								1:51.873Michael Lewis · fastest of 11 · top 5 within 6.2s+0.532s (+0.48%)	1:54.680Michael Lewis · fastest of 10 · top 5 within 2.9s+14.587s (+14.57%)	122.7Michael Lewis
5 rule changes (GT3: 5)2 weight · 1 cars added · 1 wording · 1 other · GT1 and GT2/3/Lite remove ride height ground clearance rules; cars may now touch ground when tires deflate. · GTX FIA GT3: Audi R8 now 40 mm restrictor and 2900 lbs; BMW Z4 now 70 mm restrictor and 2800 lbs; Ferrari 488 now 35 mm restrictor, TIR, and 3025 lbs.showhide 2019-04-01 GT3 26076 revised Spec line chart #26528weight 2019-04-01 GT3 Request Ride Height Clarification #26600wordingfasterGT1 and GT2/3/Lite remove ride height ground clearance rules; cars may now touch ground when tires deflate. 2019-03-01 GT3 Request clarification on bridge porting for rotary #26076weight 2019-03-01 GT3 Request to add 4G69 Mitsubishi #26154cars added 2019-01-01 GT3 GTX Homologation table update #26034otherunclearGTX FIA GT3: Audi R8 now 40 mm restrictor and 2900 lbs; BMW Z4 now 70 mm restrictor and 2800 lbs; Ferrari 488 now 35 mm restrictor, TIR, and 3025 lbs.
	Super Tour Apr 2018 BUTTRA182018-04-27								1:51.341Michael Lewis · fastest of 7 · top 5 within 6.9s+1.772s (+1.62%)	1:40.093Michael Lewis · fastest of 6 · top 5 within 16.8s-12.227s (-10.89%)
No rule changes on record between these events
	Super Tour Apr 2017 BUTTRA172017-04-28				1:44.060Vince Balch · fastest of 8 · top 5 within 18.6s	2:01.122Mike Miserendino · fastest of 7 · top 5 within 1.8s			1:49.569Collin Jackson · fastest of 5 · top 5 within 13.8s	1:52.320Collin Jackson · fastest of 5 · top 5 within 12.1s

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.