BoP Lab / Michelin Raceway Road Atlanta

P2 vs SRF vs SM vs F5 pace at Michelin Raceway Road Atlanta

Quickest here: P2 1:22.533 Lucian Pancea, Super Tour Mar 2023 qualifying · SM 1:41.798 Danny Steyn, Super Tour Mar 2021 qualifying · F5 1:30.019 Ryan Mayfield, Super Tour Mar 2021 qualifying

Lap times% of P2

P2SRFSMF5solid race · dashed qualifying · slower is lower

P2SRFSMF5solid race · dashed qualifying · each class's best lap as a share of P2's at the same event (the reference class, changeable above); 100% is level, higher is quicker

	Event	P2			SRF					SM					F5
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs P2	% of P2	Qual best	Race best	Trap	vs P2	% of P2	Qual best	Race best	Trap	vs P2	% of P2
	Super Tour Mar 2026 ST26MAR062026-03-06									1:42.324Skyler Cottrell · fastest of 52 · top 5 within 0.4s-0.524s (-0.51%)	1:42.611Charles Mactutus · fastest of 51 · top 5 within 0.2s-0.014s (-0.01%)	112.2James Newell+5.2 mph (+4.9%)
7 rule changes (SRF: 4, SM: 3)1 tyres & wheels · 1 wording · 5 othershowhide 2026-03-01 SRF SRF3 Spark Plugs #39899other 2025-10-01 SRF Add HD Oil Cooler #38979other 2025-06-01 SM SMX Data Submission - Penalties #38248other 2025-06-01 SM Committee) SMX Penaly Clarification updated language #38337wording 2025-05-01 SM Clarify Tire Marking Regs #38005tyres & wheels 2025-04-01 SRF Driver Safety & Comfort #37966other 2025-04-01 SRF Update SADEV transmission specs #37992other
	Super Tour Mar 2025 ST25MAR072025-03-07									1:42.848Sean Noonan · fastest of 35 · top 5 within 0.2s+0.228s (+0.22%)	1:42.625Sean Noonan · fastest of 33 · top 5 within 0.6s-0.370s (-0.36%)	107.0Sean Noonan+1.8 mph (+1.7%)
14 rule changes (P2: 3, SRF: 6, SM: 5)4 tyres & wheels · 2 engine · 2 suspension & brakes · 1 weight · 2 wording · 3 other · FE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure.showhide 2024-12-01 P2 2000 cc Pinto Engine Car Weight #37187weight 2024-12-01 SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other 2024-10-01 SRF Update SRF3 Air Filter Rule #36681other 2024-10-01 SRF Update SRF Brake Rotor Thickness #36687suspension & brakes 2024-10-01 SRF Hoosier Tire Decal Placement #36739tyres & wheels 2024-09-01 SM SMX Camera Rule Correction #36496wording 2024-09-01 SM Committee) AIM ECU Protocol #36556engine 2024-09-01 SM Committee) OE versus OEM Definitons #36608other 2024-09-01 SM Committee) Shifter Bushing #36611suspension & brakes 2024-09-01 SRF Protest Fee Clarification #36540wordingwordingFE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure. 2024-09-01 SRF Update to Letter 36619 with new Hoosier Contingency Decal Info #36624tyres & wheels 2024-08-01 SRF Update Rain Tire Rule and Hoosier Decal Placement #36436tyres & wheels 2024-05-01 P2 CN Spec ECU #35835engine 2024-05-01 P2 E&O - Correct FIA Group CN spec line notes #35900tyres & wheels
	Super Tour Mar 2024 ST24MAR082024-03-08	1:24.228Lucian Pancea · fastest of 4 · top 4 within 5.2s+1.695s (+2.05%)	1:26.233Sherman Chao · fastest of 4 · top 4 within 17.9s+2.429s (+2.90%)	134.0Lucian Pancea-12.5 mph (-8.5%)						1:42.620Danny Steyn · fastest of 47 · top 5 within 0.4s+0.001s (+0.00%)	1:42.995Charles Mactutus · fastest of 46 · top 5 within 0.1s+0.442s (+0.43%)	105.2Tyler Brown-6.9 mph (-6.2%)	+16.762squal +18.392s	119.4%qual 121.8%
13 rule changes (P2: 7, SRF: 6)4 engine · 3 tyres & wheels · 2 suspension & brakes · 2 weight · 1 wording · 1 othershowhide 2024-01-01 P2 E&O - Clarify B.1 modified engine range in AMAC spec lines #35225engine 2024-01-01 P2 Replacement Engine Crankcase for 07/08 Suzuki GSX-R1000 Engines #35340engine 2024-01-01 SRF Update SRF Rain / Brake Rule #34706suspension & brakes 2024-01-01 SRF Update SRF Brake Light Rule v1 #34853suspension & brakes 2024-01-01 SRF SRF / SRF3 Rule Updates #35268weight 2023-12-01 P2 Correct Table 1 for Engine Date Range Specifications #35182engine 2023-10-01 SRF SRF Radiator Rule Update #34805other 2023-06-01 SRF Hoosier SRF Wet Front Tire Rule Update #34189tyres & wheels 2023-05-01 P2 Clarify minimum side body height requirement #34143tyres & wheels 2023-05-01 P2 Clarify closed cockpit single seat car allowance #34144wording 2023-05-01 SRF Update SRF Front W2 Rain Tire Part Number #34118tyres & wheels 2023-04-01 P2 Remove redundant effective date language and update engine table #34012engine 2023-04-01 P2 E&O - Correct dimensional equivalents #34038weight
	Super Tour Mar 2023 ST23MAR102023-03-10	1:22.533Lucian Pancea · fastest of 4 · top 4 within 4.2s-1.480s (-1.76%)	1:23.804Lucian Pancea · fastest of 4 · top 4 within 4.6s+0.733s (+0.88%)	146.5Lucian Pancea-3.5 mph (-2.4%)						1:42.619Charles Mactutus · fastest of 48 · top 5 within 0.7s-0.195s (-0.19%)	1:42.553Charles Mactutus · fastest of 47 · top 5 within 0.4s+0.689s (+0.68%)	112.2Jonathan Neudorf-1.3 mph (-1.2%)	+18.749squal +20.086s	122.4%qual 124.3%
16 rule changes (P2: 7, SRF: 3, SM: 2, F5: 4)3 suspension & brakes · 3 weight · 2 engine · 2 tyres & wheels · 1 cars added · 4 wording · 1 other · F500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 from 493/593 non-HO allowance, added Moto Tassinari V3120-794A-2 option for non-HO. · F500 Rotax engines now permit Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU. · F500 clarifies stepped diameter exhaust headers prohibited except at cylinder head flange area. · F500 Rotax 593 intake boot options clarified; oil injection pump removal now permitted.showhide 2023-03-01 SRF Update SRF Brake Rule #33469suspension & brakes 2023-01-01 P2 Request to Classify Sebeco NP01 #33378cars added 2023-01-01 P2 Radical spec line clarifications #33485weight 2023-01-01 P2 E&O original class intent #33519weight 2023-01-01 P2 Update Engine Table Spec Line B.1 #33608engine 2023-01-01 SM BOP for NB1 and NB2 #32309weight 2022-09-01 F5 Intake Boots Correction #33028wordingwordingF500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 from 493/593 non-HO allowance, added Moto Tassinari V3120-794A-2 option for non-HO. 2022-08-01 F5 Ensure availability of ECU for Rotax engines #32695engineadded · engineF500 Rotax engines now permit Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU. 2022-07-01 F5 Clarify stepped exhaust header references #32743wordingwordingF500 clarifies stepped diameter exhaust headers prohibited except at cylinder head flange area. 2022-06-01 F5 593 carb boot availability and oil pump clarification #32527wordingwordingF500 Rotax 593 intake boot options clarified; oil injection pump removal now permitted. 2022-06-01 SRF SRF Tire Rule Update #32614tyres & wheels 2022-06-01 SRF Brake, seal, and air filter clarifications #32670suspension & brakes 2022-05-01 P2 E&O Clarification of Chassis Construction Requirements #32469tyres & wheels 2022-05-01 P2 Clean up P2 wording #32525wording 2022-04-01 P2 After Market to Aftermarket #32373other 2022-04-01 SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
	Super Tour Mar 2022 ST22MAR122022-03-12	1:24.013Robert Iversen · fastest of 6 · top 5 within 3.1s-3.393s (-3.88%)	1:23.071Robert Iversen · fastest of 6 · top 5 within 4.0s-3.049s (-3.54%)	150.1Robert Iversen+13.2 mph (+9.6%)						1:42.814Connor Zilisch · fastest of 60 · top 5 within 0.3s+1.016s (+1.00%)	1:41.864Travis Wiley · fastest of 60 · top 5 within 0.7s-0.700s (-0.68%)	113.5Junior Brock-0.1 mph (-0.1%)	+18.793squal +18.801s	122.6%qual 122.4%	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%)	+8.262squal +6.342s	109.9%qual 107.5%
24 rule changes (P2: 13, SRF: 5, SM: 1, F5: 5)5 engine · 4 tyres & wheels · 3 weight · 1 aero · 1 cars added · 2 wording · 8 other · F500 Majors and Runoffs cars must install AIM part #X47KPFSOLO2R0 data box mount for Solo or Solo 2. · F5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors and Runoffs. · F5 clarifies mechanical shifting only; throttle-cut and flat-shifter devices permitted if driver retains full control. · F5 single-seat open-wheel cars: rigid suspension becomes limited suspension in class definition. · F500 Rotax 593 HO engine now permitted; 875 lbs minimum weight, MA0242SP1020A or MA0242SP1063A restrictor, specific intake boots and piston required.showhide 2022-03-01 F5 E&O class name #32194otheraddedF500 Majors and Runoffs cars must install AIM part #X47KPFSOLO2R0 data box mount for Solo or Solo 2. 2022-03-01 P2 Add spec line for Beasley B2 #32147weight 2022-03-01 P2 E&O Table 1 spec line wing terminology #32148aero 2022-03-01 P2 E&O class name #32196other 2022-02-01 P2 E&O Engine section #31969engine 2022-01-01 F5 Data Box Mounting Plate #31638otheraddedF5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors and Runoffs. 2022-01-01 P2 E&O letter #31539 – Control Area definition #31783tyres & wheels 2021-12-01 P2 BoP adjustment effective 1-1-22 #31538engine 2021-12-01 P2 E&O clarification of "Control Area" definition #31539tyres & wheels 2021-12-01 SRF Three Updates to SRF Rules #31523weight 2021-09-01 P2 P2 CN Engine Rebuild Clarification #31000engine 2021-08-01 F5 Clarify allowable assisted shifting systems #30871wordingwordingF5 clarifies mechanical shifting only; throttle-cut and flat-shifter devices permitted if driver retains full control. 2021-08-01 F5 Request to correct terminology #30976wordingwordingF5 single-seat open-wheel cars: rigid suspension becomes limited suspension in class definition. 2021-08-01 P2 F5 P2 Conversion #30856other 2021-08-01 P2 Clarify minimum body width requirement #30859tyres & wheels 2021-08-01 SRF SRF Wet Tires #30849tyres & wheels 2021-08-01 SRF SADEV-SRF3 Transmission #30926other 2021-08-01 SRF SRF Update Maintenance, Repairs and Seals #30961engine 2021-06-01 F5 Request to Allow Rotax 593 HO Engine #30712cars addedaddedF500 Rotax 593 HO engine now permitted; 875 lbs minimum weight, MA0242SP1020A or MA0242SP1063A restrictor, specific intake boots and piston required. 2021-06-01 SRF SRF3 Alternator Pulley #30684weight 2021-05-01 P2 E&O tonneau cover provision in cockpit opening section #30459other 2021-05-01 P2 Remove effective dates in Table 1 #30468other 2021-05-01 P2 E&O Maximum Valves Per Cylinder #30560engine 2021-04-01 SM Updates - Obsolete Parts & BOP Parts #30438other
	Super Tour Mar 2021 ST21MAR192021-03-19	1:27.406Lucas Mann · fastest of 4 · top 4 within 5.9s	1:26.120Lucian Pancea · fastest of 3 · top 3 within 3.8s	136.9Lucian Pancea						1:41.798Danny Steyn · fastest of 68 · top 5 within 0.7s	1:42.564Preston Pardus · fastest of 67 · top 5 within 0.2s	113.6Marc Cefalo	+16.444squal +14.392s	119.1%qual 116.5%	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	+4.279squal +2.613s	105.0%qual 103.0%
38 earlier rule changes on record, in force before Super Tour Mar 2021 (from 2019)12 engine · 6 induction · 5 weight · 4 suspension & brakes · 3 tyres & wheels · 1 aero · 1 cars added · 4 wording · 2 other · F500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019. · F5 request to adjust external jetting device cockpit control denied; no rule change made. · F5 driver adjustable carburettor mixture: refer to separate Fastrack letter #28359 for ruling. · F5 cockpit adjustment request response published in Fastrack letter 28359. · F500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced to 28mm from 29mm. · F500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 minimum weights increase to 900 lbs.showhide 2021-03-01 P2 Add a new spec line for a 2-cycle, 3-cylinder engine up to 820cc #30272engine 2021-03-01 SRF Mandatory identification: #30223engine 2020-12-01 P2 Balance of Performance adjustments effective 01-01-2021 #29822induction 2020-12-01 SRF SRF Shocks, Springs and Ride Height. #29688suspension & brakes 2020-10-01 F5 Request to Update Suzuki Engine Years for F500 #29453engineadded · engineF500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019. 2020-10-01 SM Radiator E&O Clarifications #29294engine 2020-09-01 P2 E&O clarification of P2 rear wing requirements #29205aero 2020-08-01 SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes 2020-07-01 F5 Request for Cockpit Adjustment of External Jetting Devices #28359wordingunclearF5 request to adjust external jetting device cockpit control denied; no rule change made. 2020-07-01 F5 Two Stroke Motors (reply to #28359 WDYT) #28816engine 2020-07-01 F5 Re letter requesting driver adjustable carb mixture #28840wordingunclearF5 driver adjustable carburettor mixture: refer to separate Fastrack letter #28359 for ruling. 2020-07-01 F5 #28359 WDYT Request for Cockpit Adjustment #28875wordingunclearF5 cockpit adjustment request response published in Fastrack letter 28359. 2020-06-01 P2 Classify Elan NP01 in P2 Table 1 #28812cars added 2020-05-01 P2 SCCA Enterprises ESR / P2 engine restrictor testing #28669induction 2020-05-01 SRF SRF Bump Stop Correction #27019suspension & brakes 2020-04-01 P2 Add ESR inlet restrictor #27869induction 2020-03-01 P2 Request for Fly by Wire Rule Wording Change #28247engine 2020-01-01 F5 Change 600cc restrictor size #27883inductionslower · inductionF500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced to 28mm from 29mm. 2020-01-01 P2 Request for addition of BMW Engine in P2 Engine Table #27821engine 202-01-01 SRF SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes 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 2019-10-01 P2 Update Engine Table Line E notes #27414engine 2019-08-31 F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbsslower · weightF500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 minimum weights increase to 900 lbs. 2019-08-31 P2 Update P2 Engine Table spec lines to reflect 3/1/2019 #27254engine 2019-07-01 P2 E&O Transmissions #27006tyres & wheels 2019-07-01 SRF SRF Dash Windscreen Kit #27028other 2019-06-01 P2 Request to restrict all cars #26246weight 2019-03-01 P2 Change Engine Table Lines B.1 & B.5 #25777engine 2019-03-01 P2 Change Line A.1 restrictor size #26429induction 2019-03-01 SM Request to allow aftermarket fuel filters. #26370wording 2019-02-01 SM Request 99-00 replacement Wire harnesses #25602engine 2019-02-01 SM Organize and Clarify 9.1.7.C.1.o. #25913weight 2019-02-01 SM Strike Tire Tread Language #26123tyres & wheels 2019-01-01 P2 Request to Allow 1345cc Hayabusa Engines for Spec Line P2 Cars #25595engine 2019-01-01 P2 Change CN inlet restrictor implementation date #25816induction 2019-01-01 P2 Clarify Honda K20A-FD2 parts requirement #25950weight

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 P2" is the class's best as a share of P2'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 P2'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.