BoP Lab / Michelin Raceway Road Atlanta

F5 vs F6 vs SMX vs FE pace at Michelin Raceway Road Atlanta

Quickest here: F5 1:30.019 Ryan Mayfield, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta qualifying · F6 1:30.014 Clint McMahan, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta qualifying · SMX 1:24.667 Tyler Gonzales, Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta race

Lap times% of F5

F5F6SMXFEsolid race · dashed qualifying · slower is lower

F5F6SMXFEsolid race · dashed qualifying · each class's best lap as a share of F5's at the same event (the reference class, changeable above); 100% is level, higher is quicker

	Event	F5			F6					SMX					FE
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs F5	% of F5	Qual best	Race best	Trap	vs F5	% of F5	Qual best	Race best	Trap	vs F5	% of F5
	Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST26MAR062026-03-06				1:30.039Calvin Stewart · fastest of 4 · top 4 within 13.3s+0.025s (+0.03%)	1:33.719H Cory Mcleod · fastest of 3 · top 3 within 14.2s+3.452s (+3.82%)	137.8Calvin Stewart+5.7 mph (+4.3%)			1:38.517Jarrett Jones · fastest of 20 · top 5 within 0.7s-0.145s (-0.15%)	1:24.667Tyler Gonzales · fastest of 21 · top 5 within 15.4s-14.098s (-14.27%)	120.7Elivan Goulart+3.7 mph (+3.2%)
7 rule changes (SMX: 4, FE: 3)7 wording · FE adds engine management testing requirements, refusal penalties, and drivetrain violation procedures with post-event assessment. · FE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. · FE2 Mazda MZR engine mandatory spec components clarified with part number updates; intake manifold, ECU, harness, PCV, spark plug, muffler, sensors specified; wording standardized. · SMX drivers must submit data acquisition files on time or face suspension and $250 fine. · SMX penalty language clarified: level 1 and 3 infractions may carry $1,000 fine; level 2 and 4 may carry $500 fine. · SMX Toyo RR P235/40/ZR17 tire rules clarified: one set per weekend, marking after first session, damage replacement procedures revised. · SMX data submission deadline extended from 30 to 60 minutes after each timed session.showhide 2026-01-01 FE FE & FE2 Rule Updates #39484wordingwordingFE adds engine management testing requirements, refusal penalties, and drivetrain violation procedures with post-event assessment. 2025-10-01 FE FE & FE2 Bubble Tail #38978wordingwordingFE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. 2025-09-01 FE FE & FE2 Rule Updates #38901wordingwordingFE2 Mazda MZR engine mandatory spec components clarified with part number updates; intake manifold, ECU, harness, PCV, spark plug, muffler, sensors specified; wording standardized. 2025-06-01 SMX SMX Data Submission - Penalties #38248wordingwordingSMX drivers must submit data acquisition files on time or face suspension and $250 fine. 2025-06-01 SMX Committee) SMX Penaly Clarification updated language #38337wordingwordingSMX penalty language clarified: level 1 and 3 infractions may carry $1,000 fine; level 2 and 4 may carry $500 fine. 2025-05-01 SMX Clarify Tire Marking Regs #38004wordingwordingSMX Toyo RR P235/40/ZR17 tire rules clarified: one set per weekend, marking after first session, damage replacement procedures revised. 2025-05-01 SMX SMX Data Submission Timeframe #38039wordingwordingSMX data submission deadline extended from 30 to 60 minutes after each timed session.
	Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST25MAR072025-03-07									1:38.662Camden Gruber · fastest of 30 · top 5 within 0.2s-0.302s (-0.31%)	1:38.765Skyler Cottrell · fastest of 30 · top 5 within 0.5s-1.159s (-1.16%)	117.0Cam Ebben+1.0 mph (+0.9%)
9 rule changes (SMX: 5, FE: 4)9 wording · FE must use SCCA Enterprises Part # WM803010 brake line to control arm covers as delivered, secured with zip ties or tape. · SMX allows OE instrument cluster relocation for aftermarket dash mounting, with wiring re-routed only; alternate gauges now permitted. · FE and SRF protest fee structure removed, now references GCR section 8.3.1.D for fees and payment procedure. · FE Hoosier contingency decal requirement reduced from five to three decals with simplified placement rules. · SMX Spec MX-5 camera requirement wording changed; non-functioning recorder now grounds for penalty or disqualification. · SMX Spec MX-5 must run latest AIM Data Logger Spec MX-5 ECU Protocol; wording clarification for technical compliance. · SMX Mazda Miata OE versus OEM definitions clarified in GCR Section 9.1.7.1. · SM and SMX shifter bushing rules clarified: alternate bushing at shift lever bottom now allowed. · FE requires five Hoosier decals in specified locations: one small on nose or front shock cover, two 12" on front wing plates, two 12" on lower floor panels.showhide 2024-12-01 FE Brake Line to A-Arm Covers #37110wordingwordingFE must use SCCA Enterprises Part # WM803010 brake line to control arm covers as delivered, secured with zip ties or tape. 2024-12-01 SMX E&O SMX Regs 9.1.7.1.D.5.u-.w #37070wordingwordingSMX allows OE instrument cluster relocation for aftermarket dash mounting, with wiring re-routed only; alternate gauges now permitted. 2024-09-01 FE Protest Fee Clarification #36540wordingwordingFE and SRF protest fee structure removed, now references GCR section 8.3.1.D for fees and payment procedure. 2024-09-01 FE Update on Letter 36620 with new Hoosier Contingency Decal Info #36625wordingwordingFE Hoosier contingency decal requirement reduced from five to three decals with simplified placement rules. 2024-09-01 SMX SMX Camera Rule Correction #36496wordingwordingSMX Spec MX-5 camera requirement wording changed; non-functioning recorder now grounds for penalty or disqualification. 2024-09-01 SMX Committee) AIM ECU Protocol #36556wordingwordingSMX Spec MX-5 must run latest AIM Data Logger Spec MX-5 ECU Protocol; wording clarification for technical compliance. 2024-09-01 SMX Committee) OE versus OEM Definitons #36608wordingwordingSMX Mazda Miata OE versus OEM definitions clarified in GCR Section 9.1.7.1. 2024-09-01 SMX Committee) Shifter Bushing #36611wordingwordingSM and SMX shifter bushing rules clarified: alternate bushing at shift lever bottom now allowed. 2024-08-01 FE Hoosier Tire Decal Placement #36435wordingwordingFE requires five Hoosier decals in specified locations: one small on nose or front shock cover, two 12" on front wing plates, two 12" on lower floor panels.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST24MAR082024-03-08				1:30.014Clint McMahan · fastest of 8 · top 5 within 4.6s-5.777s (-6.03%)	1:30.267Clint McMahan · fastest of 8 · top 5 within 4.8s-4.980s (-5.23%)	132.1Calvin Stewart-3.7 mph (-2.7%)			1:38.964Michael Tinis · fastest of 33 · top 5 within 0.5s	1:39.924Will Robusto · fastest of 33 · top 5 within 1.1s	116.0Jack Murchison
3 rule changes (FE: 3)3 wording · FE rain light must meet FIA Standard 8874-2019, Technical List No. 76, effective 1/1/2024. · FE allows racer's tape for crash damage and fastener securing, prohibits body seam taping, permits heat exchanger taping only. · FE SADEV transmission ratios removed from review notice prior to sealing date.showhide 2024-01-01 FE Update FE Rain Light Rule #34707wordingwordingFE rain light must meet FIA Standard 8874-2019, Technical List No. 76, effective 1/1/2024. 2024-01-01 FE FE/FE2 rule update #35269wordingwordingFE allows racer's tape for crash damage and fastener securing, prohibits body seam taping, permits heat exchanger taping only. 2023-04-01 FE Update FE SADEV Transmission Rule #33883wordingwordingFE SADEV transmission ratios removed from review notice prior to sealing date.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST23MAR102023-03-10				1:35.791George Bugg · fastest of 5 · top 5 within 8.8s	1:35.247H Cory McLeod · fastest of 5 · top 5 within 9.3s	135.8Jack Walbran
9 rule changes (F5: 4, FE: 5)1 induction · 1 tyres & wheels · 7 wording · FE drivers may now adjust manual brake bias during racing. · FE front and rear wing assembly mounting and adjustment rules clarified; Gurney flap specifications and attachment methods detailed. · F500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 option for non-HO, corrected BPP part numbers. · FE engine heat shield and insulation material now permitted to protect fuel cell, filter, rail, and lines. · F500 Rotax engines now permitted to use Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU. · F500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 stepped diameter exhaust headers prohibited. · F500 adds optional intake resonator removal for 593 engines with mandatory plugging; clarifies approved 38mm intake boots; permits stock oil injection pump removal. · FE tires must be run as delivered in sets of 4. · FE master cylinder specifications clarified: Girling front .700" piston WM802005, rear .750" WM802006.showhide 2022-10-01 FE Brake bias adjuster clarification #33084wordingwordingFE drivers may now adjust manual brake bias during racing. 2022-10-01 FE FE Front and Rear Wing Update & Clarification #33089wordingwordingFE front and rear wing assembly mounting and adjustment rules clarified; Gurney flap specifications and attachment methods detailed. 2022-09-01 F5 Intake Boots Correction #33028inductionslowerF500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 option for non-HO, corrected BPP part numbers. 2022-09-01 FE Engine Heat Shield & Insulation #33019wordingwordingFE engine heat shield and insulation material now permitted to protect fuel cell, filter, rail, and lines. 2022-08-01 F5 Ensure availability of ECU for Rotax engines #32695wordingwordingF500 Rotax engines now permitted to use Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU. 2022-07-01 F5 Clarify stepped exhaust header references #32743wordingwordingF500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 stepped diameter exhaust headers prohibited. 2022-06-01 F5 593 carb boot availability and oil pump clarification #32527wordingwordingF500 adds optional intake resonator removal for 593 engines with mandatory plugging; clarifies approved 38mm intake boots; permits stock oil injection pump removal. 2022-06-01 FE Update FE/FE2 Tire Rule #32613tyres & wheelstyres & wheelsFE tires must be run as delivered in sets of 4. 2022-06-01 FE Master cylinder clarification #32669wordingwordingFE master cylinder specifications clarified: Girling front .700" piston WM802005, rear .750" WM802006.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST22MAR122022-03-12	1:30.355Wiley McMahan · fastest of 11 · top 5 within 5.0s+0.336s (+0.37%)	1:31.333Wiley McMahan · fastest of 11 · top 5 within 5.4s+0.934s (+1.03%)	138.2Wiley McMahan-3.4 mph (-2.4%)
9 rule changes (F5: 5, FE: 4)1 cars added · 1 tyres & wheels · 6 wording · 1 other · F500 must install AIM part #X47KPFSOLO2R0 data box mount for Majors Races and Runoffs. · F5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors Races and Runoffs. · FE2 Enterprise windscreen restricted to P/N WM137000; racer's tape allowed for crash damage repair, body panel securing, but not taping of body seams. · F5 clarifies assisted shifting: mechanical only, no solenoids or air-shifters; throttle/ignition devices allowed if driver controls initiation. · F5 single-seat open-wheel cars: rigid suspension terminology changed to limited suspension. · FE removes tire marking and qualifying session requirements for wet race starts; rain tire rules simplified. · FE radiator screens clarified: may not protrude more than ¼ inch in front of sidepods. · F500 Rotax 593 HO engine added at 875 lbs with MA0242SP1020A or MA0242SP1063A restrictor. · FE radiator screens allowed and recommended, positioned no more than ¼ inch from sidepod front vertical plane.showhide 2022-03-01 F5 E&O class name #32194wordingwordingF500 must install AIM part #X47KPFSOLO2R0 data box mount for Majors Races and Runoffs. 2022-01-01 F5 Data Box Mounting Plate #31638otherotherF5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors Races and Runoffs. 2021-12-01 FE Two FE2 Rule Updates #31524wordingwordingFE2 Enterprise windscreen restricted to P/N WM137000; racer's tape allowed for crash damage repair, body panel securing, but not taping of body seams. 2021-08-01 F5 Clarify allowable assisted shifting systems #30871wordingwordingF5 clarifies assisted shifting: mechanical only, no solenoids or air-shifters; throttle/ignition devices allowed if driver controls initiation. 2021-08-01 F5 Request to correct terminology #30976wordingwordingF5 single-seat open-wheel cars: rigid suspension terminology changed to limited suspension. 2021-07-01 FE FE Tire Rule Changes #30754tyres & wheelstyres & wheelsFE removes tire marking and qualifying session requirements for wet race starts; rain tire rules simplified. 2021-07-01 FE Radiator Screens Clarification #30792wordingwordingFE radiator screens clarified: may not protrude more than ¼ inch in front of sidepods. 2021-06-01 F5 Request to Allow Rotax 593 HO Engine #30712cars addedcars addedF500 Rotax 593 HO engine added at 875 lbs with MA0242SP1020A or MA0242SP1063A restrictor. 2021-06-01 FE FE Radiator Screens #30575wordingwordingFE radiator screens allowed and recommended, positioned no more than ¼ inch from sidepod front vertical plane.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST21MAR192021-03-19	1:30.019Ryan Mayfield · fastest of 11 · top 5 within 7.0s	1:30.399Calvin Stewart · fastest of 11 · top 5 within 5.2s	141.6Ryan Mayfield
18 earlier rule changes on record, in force before Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta (from 2019)2 cars added · 2 tyres & wheels · 2 weight · 1 engine · 1 induction · 1 suspension & brakes · 8 wording · 1 other · FE front springs increase to 800 lbs ±25 lbs, rear springs decrease to 900 lbs ±25 lbs, Hypercoil parts required. · F500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019. · FE Gurney flap specs clarified: front wing secondary elements limited to .500" ± .030", wing elements to .250" ± .030". · F5 request to adjust external jetting devices cockpit control denied by Club Racing Board. · Unable to summarize: letter references response in separate Fastrack document not provided. · FE Gurney flap wording clarified: permitted on front wing secondary elements only, not main plane. · FE spring rule update effective date moved from June 1 to November 1, 2020. · F500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced from 29mm to 28mm Flat Plate Intake. · FE2 class created for 2.0L MZR engine at 1250 lbs minimum; FE 2.3L becomes Regional only through 2019 Runoffs. · FE and FE2 minimum weight increased to 1270 lbs including driver; spring options and tire warmer ban added. · FE wet tire rear width increases from 7.5 to 8.0 inches, Hoosier 44196 W3. · F500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 (03-13) minimum weight increases from 875 to 900 lbs. · FE removes American Racer tires, mandates Hoosier dry 22.0 x 8.0-13 FE front and 22.0 x 10.0-13 FE rear. · FE anti-roll bars may run disconnected; one link removable front, rear, or both for safety. · FE and FE2 Enterprise bubble tail P/N WM138014 newly allowed for both classes. · FE wet tires updated: front Hoosier 44195 W3 and rear 44217 W3, WET designation removed.showhide 2020-12-01 FE FE / FE2 Spring Updates #29689suspension & brakessuspension & brakesFE front springs increase to 800 lbs ±25 lbs, rear springs decrease to 900 lbs ±25 lbs, Hypercoil parts required. 2020-10-01 F5 Request to Update Suzuki Engine Years for F500 #29453wordingwordingF500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019. 2020-10-01 FE FE Gurney Flap Spec Update #29445wordingwordingFE Gurney flap specs clarified: front wing secondary elements limited to .500" ± .030", wing elements to .250" ± .030". 2020-07-01 F5 Request for Cockpit Adjustment of External Jetting Devices #28359wordingwordingF5 request to adjust external jetting devices cockpit control denied by Club Racing Board. 2020-07-01 F5 Two Stroke Motors (reply to #28359 WDYT) #28816engine 2020-07-01 F5 Re letter requesting driver adjustable carb mixture #28840other 2020-07-01 F5 #28359 WDYT Request for Cockpit Adjustment #28875wordingunclearUnable to summarize: letter references response in separate Fastrack document not provided. 2020-06-01 FE FE Gurney flap wicker clarification #28885wordingwordingFE Gurney flap wording clarified: permitted on front wing secondary elements only, not main plane. 2020-05-01 FE FE spring rule update changed to November 1, 2020 #28814wordingwordingFE spring rule update effective date moved from June 1 to November 1, 2020. 2020-01-01 F5 Change 600cc restrictor size #27883inductionslowerF500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced from 29mm to 28mm Flat Plate Intake. 2020-01-01 FE Request for FE / FE2 preparation rules update #27722cars addedcars addedFE2 class created for 2.0L MZR engine at 1250 lbs minimum; FE 2.3L becomes Regional only through 2019 Runoffs. 2019-12-01 FE FE / FE2 Update Rules #27624weightslowerFE and FE2 minimum weight increased to 1270 lbs including driver; spring options and tire warmer ban added. 2019-10-01 FE FE Wet Tire E&O #27365tyres & wheelsfasterFE wet tire rear width increases from 7.5 to 8.0 inches, Hoosier 44196 W3. 2019-08-31 F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbsslowerF500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 (03-13) minimum weight increases from 875 to 900 lbs. 2019-07-01 FE FE Tire Update #27029tyres & wheelsunclearFE removes American Racer tires, mandates Hoosier dry 22.0 x 8.0-13 FE front and 22.0 x 10.0-13 FE rear. 2019-05-31 FE FE Anti-Roll Bar Clarification #26912wordingwordingFE anti-roll bars may run disconnected; one link removable front, rear, or both for safety. 2019-05-31 FE FE / FE2 Updated Bubble Tail Rule #26913cars addedcars addedFE and FE2 Enterprise bubble tail P/N WM138014 newly allowed for both classes. 2019-03-01 FE Request to Update Hoosier Rain Tire Part Number for the FE cars #26235wordingwordingFE wet tires updated: front Hoosier 44195 W3 and rear 44217 W3, WET designation removed.

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 F5" is the class's best as a share of F5'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 F5'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.