BoP Lab / Michelin Raceway Road Atlanta

FE2 vs SRF vs SM vs FX pace at Michelin Raceway Road Atlanta

Quickest here: FE2 1:22.855 Paul Schneider, Super Tour Mar 2022 race · SM 1:41.798 Danny Steyn, Super Tour Mar 2021 qualifying · FX 1:25.399 Trent Walko, Super Tour Mar 2022 race

Lap times% of FE2

FE2SRFSMFXsolid race · dashed qualifying · slower is lower

FE2SRFSMFXsolid race · dashed qualifying · each class's best lap as a share of FE2's at the same event (the reference class, changeable above); 100% is level, higher is quicker

	Event	FE2			SRF					SM					FX
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs FE2	% of FE2	Qual best	Race best	Trap	vs FE2	% of FE2	Qual best	Race best	Trap	vs FE2	% of FE2
	Super Tour Mar 2026 ST26MAR062026-03-06	1:24.639Paul Schneider · fastest of 7 · top 5 within 2.4s+1.503s (+1.81%)	1:24.978Paul Schneider · fastest of 7 · top 5 within 2.9s+1.478s (+1.77%)	138.5Paul Schneider+4.9 mph (+3.6%)						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%)	+17.633squal +17.685s	120.8%qual 120.9%
9 rule changes (FE2: 2, SRF: 4, SM: 3)1 cars added · 1 tyres & wheels · 1 wording · 6 other · FE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only. · FE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook.showhide 2026-03-01 SRF SRF3 Spark Plugs #39899other 2025-10-01 FE2 FE & FE2 Bubble Tail #38978cars addedaddedFE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only. 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 FE2 Driver Safety & Comfort #37965otheraddedFE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook. 2025-04-01 SRF Driver Safety & Comfort #37966other 2025-04-01 SRF Update SADEV transmission specs #37992other
	Super Tour Mar 2025 ST25MAR072025-03-07	1:23.136Franklin Futrelle · fastest of 8 · top 5 within 2.1s-0.076s (-0.09%)	1:23.500Franklin Futrelle · fastest of 8 · top 5 within 1.9s-0.914s (-1.08%)	133.6Eric Wisniewski+1.7 mph (+1.3%)						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%)	+19.125squal +19.712s	122.9%qual 123.7%
14 rule changes (SRF: 6, SM: 5, FX: 3)3 tyres & wheels · 2 suspension & brakes · 2 weight · 1 cars added · 1 engine · 2 wording · 3 other · FX Ligier JS F422 minimum weight reduces to 1360 lbs from 1375 lbs. · FE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure. · FX Ligier JS F4 1st Gen minimum weight drops 15 lbs to 1405; 2nd Gen rises 31 lbs to 1375. · FX adds Ligier JS F422 second generation classification, new car permitted.showhide 2024-12-01 FX Request to Change to Weight for Ligier JS F422 #37124weight -15 lbsfaster · weightFX Ligier JS F422 minimum weight reduces to 1360 lbs from 1375 lbs. 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 2024-07-01 FX Adjust minimum weights to align with pro F4 rules #36221weight -15 lbsfaster · weightFX Ligier JS F4 1st Gen minimum weight drops 15 lbs to 1405; 2nd Gen rises 31 lbs to 1375. 2024-04-01 FX Add Classification for 2nd Gen Ligier JS F422 #35844cars addedaddedFX adds Ligier JS F422 second generation classification, new car permitted.
	Super Tour Mar 2024 ST24MAR082024-03-08	1:23.212Franklin Futrelle · fastest of 14 · top 5 within 2.3s+0.084s (+0.10%)	1:24.414Charles Russell Turner · fastest of 13 · top 5 within 1.5s-0.040s (-0.05%)	131.9Jason Conzo-9.2 mph (-6.5%)						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%)	+18.581squal +19.408s	122.0%qual 123.3%	1:34.337Brad Yake · only car+5.991s (+6.78%)	1:36.351Brad Yake · only car+10.952s (+12.82%)	117.3Brad Yake-19.8 mph (-14.4%)	+11.937squal +11.125s	114.1%qual 113.4%
9 rule changes (SRF: 6, FX: 3)2 suspension & brakes · 2 tyres & wheels · 1 cars added · 1 weight · 1 wording · 2 other · FX Formula 4 removed reference to FIA Technical Regulations 2015 and subsequent safety requirements; tire choice remains unrestricted. · USF2000 Van Diemen with Mazda MZR LF-DE 2.0L added to FC as spec line car; removed from FX.showhide 2024-03-01 FX Clarify Formula 4 Rules in FX #35700wordingunclearFX Formula 4 removed reference to FIA Technical Regulations 2015 and subsequent safety requirements; tire choice remains unrestricted. 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 2023-11-01 FX FM Rules Update #34841other 2023-10-01 SRF SRF Radiator Rule Update #34805other 2023-06-01 FX USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC #34329cars addedaddedUSF2000 Van Diemen with Mazda MZR LF-DE 2.0L added to FC as spec line car; removed from FX. 2023-06-01 SRF Hoosier SRF Wet Front Tire Rule Update #34189tyres & wheels 2023-05-01 SRF Update SRF Front W2 Rain Tire Part Number #34118tyres & wheels
	Super Tour Mar 2023 ST23MAR102023-03-10	1:23.128Franklin Futrelle · fastest of 15 · top 5 within 2.5s+0.032s (+0.04%)	1:24.454Charles Russell Turner · fastest of 15 · top 5 within 1.2s+1.599s (+1.93%)	141.1Eric Cruz-3.0 mph (-2.1%)						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%)	+18.099squal +19.491s	121.4%qual 123.4%
12 rule changes (SRF: 3, SM: 2, FX: 7)3 suspension & brakes · 3 weight · 2 cars added · 1 engine · 1 induction · 1 tyres & wheels · 1 wording · FX: Remove FB and FM from combined-class preferences in GCR 1.4.2.D. · Formula Renault 2.0 (10-17) reclassified from FX to FA spec line; minimum weight reduced 1300 to 1280 lbs, restrictor removed. · Pro Formula F2000 tube frame transmission cut to 4 forward gears; sequential carries 25 lb. weight penalty. · FX Formula Mazda minimum weight set to 1270 lb. · FX Formula Mazda drops four-port Renesis engine option; weight minimum now per notes. · Formula Renault 2.0 (10-17) now requires 45mm Flat Plate Intake Restrictor; fairings before or after prohibited. · USF2000 Tube Frame adds Performance Electronics PE3-8400 ECU as alternative to Pectel T2.showhide 2023-03-01 SRF Update SRF Brake Rule #33469suspension & brakes 2023-02-01 FX E&O - Remove references to FB and FM in GCR section 1.4.2.D #33725wordingwordingFX: Remove FB and FM from combined-class preferences in GCR 1.4.2.D. 2023-01-01 SM BOP for NB1 and NB2 #32309weight 2022-12-01 FX Reclassify 2010-2017 Formula Renault 2.0 as a spec line car in FA #33395weightfaster · weightFormula Renault 2.0 (10-17) reclassified from FX to FA spec line; minimum weight reduced 1300 to 1280 lbs, restrictor removed. 2022-08-01 FX Pro Formula F2000/USF2000 Transmission E&O #32823engineslower · enginePro Formula F2000 tube frame transmission cut to 4 forward gears; sequential carries 25 lb. weight penalty. 2022-08-01 FX Formula Mazda Minimum Weight #33010weightslower · weightFX Formula Mazda minimum weight set to 1270 lb. 2022-08-01 FX Formula Mazda Spec Line E&O Corrections #33011cars addedremoved · cars addedFX Formula Mazda drops four-port Renesis engine option; weight minimum now per notes. 2022-07-01 FX Formula Renault 2.0 (10-17) Intake Restrictor #32745inductionslower · inductionFormula Renault 2.0 (10-17) now requires 45mm Flat Plate Intake Restrictor; fairings before or after prohibited. 2022-07-01 FX Allow Performance Electronics PE3-8400 for USF2000 MZR #32767cars addedaddedUSF2000 Tube Frame adds Performance Electronics PE3-8400 ECU as alternative to Pectel T2. 2022-06-01 SRF SRF Tire Rule Update #32614tyres & wheels 2022-06-01 SRF Brake, seal, and air filter clarifications #32670suspension & brakes 2022-04-01 SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
	Super Tour Mar 2022 ST22MAR122022-03-12	1:23.096Paul Schneider · fastest of 13 · top 5 within 2.8s-1.268s (-1.50%)	1:22.855Paul Schneider · fastest of 13 · top 5 within 2.5s-1.101s (-1.31%)	144.1Bailey Monette+5.2 mph (+3.8%)						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%)	+19.009squal +19.718s	122.9%qual 123.7%	1:28.346Trent Walko · fastest of 4 · top 4 within 6.6s+0.215s (+0.24%)	1:25.399Trent Walko · fastest of 4 · top 4 within 5.7s-2.391s (-2.72%)	137.1Trent Walko+2.7 mph (+2.0%)	+2.544squal +5.250s	103.1%qual 106.3%
13 rule changes (SRF: 5, SM: 1, FX: 7)5 tyres & wheels · 2 weight · 1 cars added · 1 engine · 1 wording · 3 other · Formula Mazda FX rule reference updated to current specifications document; tire marking no longer required. · FX Formula 4 tire choice unrestricted; must provide FIA certification rules upon request. · FX USF2000 Tube Frame front tyre changes from Hoosier radial 20.5 x 7.0 x 13 to any Hoosier 20.5 x 7.0 x 13. · FX Formula Renault 2.0 (00-09) and (10-17) tire choice unrestricted; no other component alterations except repairs. · FX USF2000 Tube Frame gains Hoosier radial tyre option, FC-compliant shocks, Wilwood brakes, and Bosch spark plugs. · FX USF2000 Tube Frame now allows any Hoosier radial tire 20.5×7.0×13 front, 22.5×8.0×13 rear. · Formula Renault 2.0 / Fran-Am 2000 added to FX class at 1250 lbs with 8-inch front, 10-inch rear wheels, sealed engine.showhide 2022-02-01 FX FM Rule Set Clarification #31881wordingwordingFormula Mazda FX rule reference updated to current specifications document; tire marking no longer required. 2022-02-01 FX E&O F4 Tires #31940tyres & wheelsadded · tyres & wheelsFX Formula 4 tire choice unrestricted; must provide FIA certification rules upon request. 2022-02-01 FX E&O USF2000 Tube Frame #31951tyres & wheelstyres & wheelsFX USF2000 Tube Frame front tyre changes from Hoosier radial 20.5 x 7.0 x 13 to any Hoosier 20.5 x 7.0 x 13. 2022-02-01 FX URGENT - FX- Formula Renault Tire #32058tyres & wheelsadded · tyres & wheelsFX Formula Renault 2.0 (00-09) and (10-17) tire choice unrestricted; no other component alterations except repairs. 2021-12-01 SRF Three Updates to SRF Rules #31523weight 2021-08-01 FX Rules Adjustment #30950otheraddedFX USF2000 Tube Frame gains Hoosier radial tyre option, FC-compliant shocks, Wilwood brakes, and Bosch spark plugs. 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 FX FX/FRP Tire Rule #30723tyres & wheelsadded · tyres & wheelsFX USF2000 Tube Frame now allows any Hoosier radial tire 20.5×7.0×13 front, 22.5×8.0×13 rear. 2021-06-01 SRF SRF3 Alternator Pulley #30684weight 2021-05-01 FX Classify the 2000-2009 Formula Renault 2.0 / Fran-Am 2000 #30460cars addedaddedFormula Renault 2.0 / Fran-Am 2000 added to FX class at 1250 lbs with 8-inch front, 10-inch rear wheels, sealed engine. 2021-04-01 SM Updates - Obsolete Parts & BOP Parts #30438other
	Super Tour Mar 2021 ST21MAR192021-03-19	1:24.364Bailey Monette · fastest of 18 · top 5 within 1.3s	1:23.956Bailey Monette · fastest of 18 · top 5 within 0.8s	138.9T Vanacore						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	+18.608squal +17.434s	122.2%qual 120.7%	1:28.131Austin Hill · fastest of 6 · top 5 within 3.8s	1:27.790Austin Hill · fastest of 6 · top 5 within 4.1s	134.4Austin Hill	+3.834squal +3.767s	104.6%qual 104.5%
24 earlier rule changes on record, in force before Super Tour Mar 2021 (from 2019)5 cars added · 4 suspension & brakes · 3 engine · 3 weight · 2 tyres & wheels · 5 wording · 2 other · FX adds 2010–2017 Formula Renault 2.0, must comply with Table 1 notes. · FX FormulaSPEED FS2.0 now references online specifications instead of requiring World Speed Inc. documentation by April 2020. · FE2 oil cooler rule clarified: Setrab 50-625-7612 or any cooler with max core 13 inches wide by 6.5 inches high allowed. · Formula Ireland/Formula FX cars pending specification submission for possible FX table addition. · Ex-Pro Formula Super Vee added to FX with 1600cc VW engine, 1190 lb minimum weight, 6-inch front and 8-inch rear wheels. · FormulaSPEED with 2.0L Mazda MZR engine, 8in front/10in rear wheels, adjustable dual rear planes, 1350 lbs moves from FA to FX. · FX Formula Mazda no longer requires tire marking; must comply with December 2019 GCR rules. · Pro Formula F 2000 and USF2000 Tube Frame engine and car rules simplified; FC rules and FRP MAZDA MZR F2000 specs now apply directly. · FE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited.showhide 2021-03-01 SRF Mandatory identification: #30223engine 2021-01-01 FX Request for Car Classification to Compete in Formula X #29933cars addedaddedFX adds 2010–2017 Formula Renault 2.0, must comply with Table 1 notes. 2020-12-01 FX Update specifications for FormulaSPEED cars #29674wordingwordingFX FormulaSPEED FS2.0 now references online specifications instead of requiring World Speed Inc. documentation by April 2020. 2020-12-01 SRF SRF Shocks, Springs and Ride Height. #29688suspension & brakes 2020-10-01 SM Radiator E&O Clarifications #29294engine 2020-09-01 FE2 FE/FE2 Oil Cooler #29293wordingwordingFE2 oil cooler rule clarified: Setrab 50-625-7612 or any cooler with max core 13 inches wide by 6.5 inches high allowed. 2020-09-01 FX Follow up to to Letter#28991 Request for FX classification #29281cars added 2020-08-01 SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes 2020-07-01 FX Request to be added to FX group #28991cars addedaddedFormula Ireland/Formula FX cars pending specification submission for possible FX table addition. 2020-05-01 SRF SRF Bump Stop Correction #27019suspension & brakes 2020-04-01 FX Request to classify FSV in FX #28057cars addedaddedEx-Pro Formula Super Vee added to FX with 1600cc VW engine, 1190 lb minimum weight, 6-inch front and 8-inch rear wheels. 2020-04-01 FX Classify FormulaSPEED in FX #28715cars addedaddedFormulaSPEED with 2.0L Mazda MZR engine, 8in front/10in rear wheels, adjustable dual rear planes, 1350 lbs moves from FA to FX. 2020-03-01 FX Request to remove tire marking language from FM #28415wordingwordingFX Formula Mazda no longer requires tire marking; must comply with December 2019 GCR rules. 2020-02-01 FX Change to FX Table 1 #28322wordingunclearPro Formula F 2000 and USF2000 Tube Frame engine and car rules simplified; FC rules and FRP MAZDA MZR F2000 specs now apply directly. 202-01-01 SRF SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes 2019-12-01 FE2 FE / FE2 Update Rules #27624weightslower · weightFE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited. 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 2019-07-01 SRF SRF Dash Windscreen Kit #27028other 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

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 FE2" is the class's best as a share of FE2'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 FE2'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.