BoP Lab / Buttonwillow Raceway Park
FE vs FM vs F500 vs FB 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 · F500 1:58.561 Lance Spiering, Super Tour Feb 2022 race · FB 1:38.870 Gary Hickman, Super Tour Apr 2018 race
| Event | FE | FM | F500 | FB | ||||||||||||||||
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| 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 2022 CALCL222022-02-17 | 2:03.309Lance Spiering · only car | 1:58.561Lance Spiering · only car | 111.9Lance Spiering | |||||||||||||||||
14 rule changes (FE: 14)3 aero · 2 suspension & brakes · 2 tyres & wheels · 1 cars added · 1 weight · 4 wording · 1 other · FE removes qualifying tire marking requirements and rain tire set rules; renumbers tire warmer prohibition. · FE radiator screens may not protrude more than ¼ inch in front of the outside vertical plane of the sidepods. · FE radiator screens now allowed, maximum ¼ inch from sidepod front vertical plane. · FE front springs change to 800 lbs Hypercoil WM203013 Silver; rear to 900 lbs Hypercoil WM203014 Silver. · FE Gurney flaps clarified: front wing secondary only at 0.500" ±0.030", rear wing at 0.250" ±0.030". · FE Gurney flap wicker bill clarified: permitted on front wing secondary elements only, not main plane. · FE2 and FE spring part numbers WM203013 front and WM203014 rear required date moved to November 1, 2020. · FE2 Mazda 2.0L MZR engine now permitted in all SCCA events at 1250 lbs minimum; FE 2.3L becomes Regional Only through 2019 Runoffs. · FE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited. · FE Hoosier wet rear tire width increases from 7.5 to 8.0 inches, part number 44196 W3. · FE removes American Racer tires, mandates Hoosier dry tires 22.0 X 8.0-13 and 22.0 X 10.0-13, wet tires 22.0 X 7.5-13 and 22.0 X 9.0-13. · FE anti-roll bar links may be removed one per end for safety, but bars must stay connected. · FE and FE2 Enterprise bubble tail P/N WM138014 newly allowed for both classes.show
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| 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 rule change (FE: 1)1 tyres & wheels · FE Hoosier rain tyre part numbers updated: front 44195 W3, rear 44217 W3.show
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| 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% | 1:39.142Gary Hickman · fastest of 2-3.130s (-3.06%) | 1:38.870Gary Hickman · fastest of 2-1.241s (-1.24%) | -8.170squal -8.454s | 92.4%qual 92.1% | ||||||||||
| 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% | 1:42.272John LaBrie · fastest of 2 | 1:40.111Gary Hickman · fastest of 2 | -8.088squal -6.478s | 92.5%qual 94.0% | ||||||||||
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 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.