F500 + SRF + FM + FE2 at Buttonwillow Raceway Park
This track has been raced on 4 configurations (Circuit, 2.57 mi; Classic 25 CCW, 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.
F500 has no laps in the events chosen. It ran at Super Tour Feb 2022: add that event.
SRF has no laps in the events chosen. It ran at Super Tour Apr 2017, Majors Apr 2016: add those events.
FM has no laps in the events chosen. It ran at Super Tour Apr 2019, Super Tour Apr 2018, Super Tour Apr 2017: add those events.
One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it.
Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.
Rule changes between these events
Super Tour Feb 2023 → Super Tour Feb 2024 2023-02-24 to 2024-02-23
faster · engineSRF removes 1985 Renault Alliance solid front rotor option; restrictor sizes decrease 1mm for newer Kawasaki and multi-brand engines; minimum weights increase to 1100 lbs.As printed in Fastrack
In SRF, GCR section 9.1.8.D.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall be used as delivered with no machining of any kind. Minimum thickness 12.20mm (0.481"). The 1985 Renault Alliance solid front rotor (Reference: Bendix PRT1318 or Centrix 121.11004) may be used on front, rear, or both axles, but each axle must be paired to the same type rotor. The Renault Alliance solid front rotors may not be used. Rubber caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185. Original caliper pistons may be replaced with vented caliper piston P/N 1196184; no other modification allowed. Wilwood caliper with bracket universal fit P/N 800038 may be used as delivered with no modification of any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as delivered with no modification of any kind; maximum of one spring per caliper." P2 Engine Table Spec Line Engine Series
A specification table follows in the original; it is not shown here.
tyres & wheelsSRF wet front tyre changes to Hoosier P/N 46100 P185/60R13 H20 or W2 with 2.5" ground clearance.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Wet: Front – Hoosier P/N 46100 P185/60R13 H20 or W2 Rear – Hoosier P/N 46105 P205/60R13 H20 or W2 Ground clearance is 2.5" with driver as raced when P185/60R13 (H20 or W2) tires are used."
addedSRF radiator options expanded: Enterprises P/N 480465 with baffle 480464, 480466, or Automotive 1R698 and CU698 allowed if cross-reference equivalent.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.V.j, change as follows: "Radiator - Enterprises new style P/N 480465 (requires baffle P/N 480464) or P/N 480466 can be used. P/N 480466, may can be replaced with Automotive P/N 1R698, CU698 or equivalent OEM manufacturer justified by one cross-reference chart equivalent, as long as the size, shape, and material are the same as the original P/N. The capacity, core thickness, etc., cannot be changed even if allowed under the above. The competitor is responsible for providing this documentation of the cross-reference P/N."
otherSRF rain/brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24; secondary filament must connect to rain light switch.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.W.l, change as follows: "A Super Bright LEDs Inc. rain / brake light comprised of a single standard trailer oval lamp, 2-1/4 inches x 6-1/2 inches, with incandescent or LED illumination, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the wiring harness. The secondary filament of the brake light assembly shall must be connected to a switch enabling its use as a rain light."
otherSRF brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24, with SCCA Enterprises P/N 180427A pigtail and strobing rain light kit.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.W.l, change as follows: "A Super Bright LEDs Inc. P/N PT-STRB-R24 (SCCA Enterprises P/N 180427A) rain / brake light, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the wiring harness. An SCCA Enterprises P/N 1190503 Strobing Brake Light Pigtail is required. The secondary filament of the brake light assembly must be connected to a switch enabling its use as a strobing rain light. A Strobing Brake Light Kit P/N 1168003 is available, which includes the brake light and pigtail."
In SRF, GCR section 9.1.8.D.1.H, add the following: "NO MODIFICATIONS ALLOWED. Front brake ducts are required, attached to the openings in the lower radiator baffles, any flexible 4" duct material allowed, installed length minimum 12" maximum 36" in length. Must be securely fastened, Bracket Part # P/N 800368 can be used. Shall Must serve no other purpose. An extension may be welded to the side of the throttle pedal to improve heel-and-toe braking. Master cylinder casting / location must be used as delivered on P/N 180110 Pedal Mounting support. Aeroquip style -3 braided stainless flex lines only, must attach to all brake components without modification. Brake pad "anti-rattle" clips must be removed." In SRF, GCR section 9.1.8.D.1.V, add the following: "ii. Rear SADEV shift cable aluminum two-piece style clamp may be used. The P/N WM302007A clamp must serve no other purpose." In SRF, GCR section 9.1.8.D.1.X.k, add the following: "Negative camber shall must not exceed 5.0 degrees absolute maximum front and rear." In SRF, GCR section 9.1.8.D.1.AA.b, add the following: "2. Height of the radiator opening vertical surface 3 1/2“ +/- 1/2"." P2 Engine Table B.1 2008 and older Stock Suzuki, Yamaha, Honda, BMW 38.5mm P2 Engine Table B.2 Not required P2 Engine Table B.3 38.5mm Modified Engine 950 lbs. 1005cc max P2 Engine Table B.1 2008 and older 37mm P2 Engine Table B.2 Not required P2 Engine Table B.3 39mm Stock Engine 1050 lbs.
Super Tour Feb 2024 → Super Tour Feb 2025 2024-02-23 to 2025-02-22
SRF Update Rain Tire Rule and Hoosier Decal Placement
tyres & wheelsSRF wet tyres: front P185/60R13 H20 or W2 and rear P205/60R13 H20 or W2 removed; front P185/65R13 W2 and rear P205/60R13 W2 now required. Hoosier decal placement specified.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Wet: Front – Hoosier P/N 46100 P185/60R13 H20 or W2 Rear – Hoosier P/N 46105 P205/60R13 H20 or W2 Ground clearance is 2.5” with driver as raced when P185/60R13 (H20 or W2) tires are used. OR Front – Hoosier P/N 46101 P185/65R13 W2 Rear – Hoosier P/N 46105 P205/60R13 W2 1. It is forbidden to regroove tires. 2. The use of tire warmers or cooling methods other than natural air convection or conduction is prohibited. The penalty for violation will be the loss of qualifying times and/or the disqualification of race results. 3. Hoosier SRF/SRF3 Decal Placement: Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including SCCA Enterprises."
wordingFE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure.As printed in Fastrack
In FE, GCR section 9.1.1.I.2.U.b.3, change as follows: "Protest Fee: Regional -$25.00, National -$50.00. See GCR section 8.3.1.D for fees and payment procedure." In SRF, GCR section 9.1.8.D.1.U.b.3, change as follows: "Protest Fee: Regional -$25.00, National -$50.00. See GCR section 8.3.1.D for fees and payment procedure. Item 1 will be done by the CSR or other shop that is equipped for this type of work and will be paid directly."
SRF Update to Letter 36619 with new Hoosier Contingency Decal Info
wordingSRF Hoosier contingency decal requirement reduced from four decals in specific locations to three decals with simplified placement.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.X.f.3, change as follows: "Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including SCCA Enterprises Per Hoosier's contingency program, three (3) decals are required to qualify for contingency awards. One (1) decal must be located on each side of the car and one (1) decal must be visible on the front."
suspension & brakesSRF Wilwood vented rotor minimum thickness increases to 13.25mm, 0.522 inches.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall must be used as delivered with no machining of any kind. Minimum thickness 12.20mm (0.481”) 13.25mm (0.522”)."
wordingSRF3 Hoosier decal placement changed from four logos on nose and tail to three logos on sides and center front.As printed in Fastrack
In SRF, GCR section 9.1.8.D.2.B, change as follows: "Mandatory identification: "SRF3" near the side car numbers. "Hoosier" logo (4) on both sides front lower outer corners of the nose and each side of the tail. Three (3) "Hoosier" logos, one (1) on each side of the car and one (1) on the center front of the car."
Super Tour Feb 2025 → Super Tour Feb 2026 2025-02-22 to 2026-02-21
addedFE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook.As printed in Fastrack
In FE2, GCR section 9.1.1.G.2.E, add the following: "g. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard configuration."
addedSRF drivers with disabilities may modify seat and controls for safety and comfort with SCCA approval, noted in logbook, for that driver only.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.D, add the following: "f. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard configuration."
added · engineSRF3 adds HD Oil Cooler P/N G1148500 option alongside standard P/N G480503, no fan permitted.As printed in Fastrack
In SRF, GCR section 9.1.8.D.1.V.ff, change as follows: "SRF3 Oil Cooler, P/N G480503 or HD Oil Cooler P/N G1148500 may be used as mounted per the GEN3 Assembly Manual. No fan permitted for SRF. HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual."
What the rules allowed changed as listed; this does not say what any particular car ran.
Sectors
S1 SF → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 mi
Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.