BoP Lab / Michelin Raceway Road Atlanta

ITB vs SMX vs ITA pace at Michelin Raceway Road Atlanta

Quickest here: SMX 1:24.667 Tyler Gonzales, Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta race

ITBSMXITAsolid race · dashed qualifying · slower is lower

	Event	ITB			SMX				ITA
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs ITB	Qual best	Race best	Trap	vs ITB
	Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST26MAR062026-03-06				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%)
9 rule changes (ITB: 1, SMX: 4, ITA: 4)1 cars added · 1 suspension & brakes · 7 wording · Turbocharged and supercharged cars ineligible for IT classes unless explicitly listed. · Turbocharged and supercharged cars ineligible for IT classes unless explicitly listed. · ITA 90-93 Miata differential housing reinforcement clarified; 94-05 differential conversion and NB rear uprights now explicitly permitted. · ITA Mazda MX-5 NA 90-97 may now use OEM NB 99-05 rear uprights instead of original 90-93 units. · 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. · ITA Honda Accord LX/EX 98-02 2254cc classified at 2700 lbs minimum weight. · 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 2026-02-01 ITA E&O: Turbo Cars in IT #39691wordingwordingTurbocharged and supercharged cars ineligible for IT classes unless explicitly listed. 2026-02-01 ITB E&O: Turbo Cars in IT #39691wordingwordingTurbocharged and supercharged cars ineligible for IT classes unless explicitly listed. 2025-10-01 ITA Change 90-93 Miata Diff Housing Upgrade Wording in Notes #38965wordingwordingITA 90-93 Miata differential housing reinforcement clarified; 94-05 differential conversion and NB rear uprights now explicitly permitted. 2025-08-01 ITA Allow NA Miata to Upgrade to NB Miata Rear Suspension Uprights #38478suspension & brakesfasterITA Mazda MX-5 NA 90-97 may now use OEM NB 99-05 rear uprights instead of original 90-93 units. 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 ITA 1998-2002 Honda Accord 2.3L #38075cars addedcars addedITA Honda Accord LX/EX 98-02 2254cc classified at 2700 lbs minimum weight. 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%)
8 rule changes (ITB: 1, SMX: 5, ITA: 2)8 wording · SMX allows OE instrument cluster relocation for aftermarket dash mounting, with wiring re-routed only; alternate gauges now permitted. · 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. · ITA 90-93 Miata may now use 94-05 differential assembly, driveshaft, and half-shafts with any permitted final drive ratio. · IT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed. · IT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed.showhide 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 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. 2024-06-01 ITA 90-93 Miatas to use 94-97 Differential Allowance In #35989wordingwordingITA 90-93 Miata may now use 94-05 differential assembly, driveshaft, and half-shafts with any permitted final drive ratio. 2024-04-01 ITA Battery Change #35854wordingwordingIT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed. 2024-04-01 ITB Battery Change #35854wordingwordingIT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST24MAR082024-03-08				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
19 earlier rule changes on record, in force before Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta (from 2019)11 cars added · 2 weight · 1 engine · 5 wording · Chevrolet Beretta 88–90 added to ITA classification with engine and weight specs. · Honda Fit MT and CVT 2015-2019 added to ITB at 2525 lbs, may run B-Spec or IT spec. · Porsche 944 (2V) (83-88) added to ITA at 2865 lbs; removed from ITS. · Porsche 924S (86-88) classified ITA at 2865 lbs; Porsche 944 (2V) (83-88) classified ITS at 2865 lbs. · Porsche 944 2V 83-88 reclassified from ITS to ITA effective 2021-08-01. · Toyota Camry 1987-91 4 Cyl DOHC 1998cc added to ITA at 2255 lbs minimum weight. · Toyota Camry 1987-91 4 Cyl DOHC 1998cc added to ITA at 2255 lbs minimum weight. · ITB now allows B-Spec prepared vehicles to compete if compliant with current B-Spec rules for that vehicle. · ITA 92-95 Civic EX drops VTEC designation; both EX and Si specify D16Z6 engine. · ITR Honda Accord V6 Coupe 03-05 and 06-07 newly classified at 3175 lbs minimum weight. · ITR Honda Accord V6 Coupe 03-05 and 06-07 newly classified at 3175 lbs minimum weight. · Improved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. · Improved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. · ITA Ford Escort ZX2 year range extended to 2003, minimum weight reduced to 2355 lbs. · ITA Ford Escort ZX2 year range extended to 2003, minimum weight reduced to 2355 lbs. · ITB Mini Cooper extended to 2013 model year, allowed in B-Spec or IT specification with respective weights. · IT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions. · IT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions. · ITB dual-classifies Honda Fit 09-13 at 2270 lbs and 14-15 at 2705 lbs, plus seven other B-Spec cars into ITC.showhide 2024-03-01 ITA Request to Classify Chevrolet Beretta #35163cars addedcars addedChevrolet Beretta 88–90 added to ITA classification with engine and weight specs. 2024-03-01 ITB Honda Fit 2016 - 2020 Request #34907cars addedcars addedHonda Fit MT and CVT 2015-2019 added to ITB at 2525 lbs, may run B-Spec or IT spec. 2022-10-01 ITA Spec LIne Error #33130cars addedcars addedPorsche 944 (2V) (83-88) added to ITA at 2865 lbs; removed from ITS. 2022-07-01 ITA Request for Porsche 924S Reclassification to ITA #32441cars addedcars addedPorsche 924S (86-88) classified ITA at 2865 lbs; Porsche 944 (2V) (83-88) classified ITS at 2865 lbs. 2021-08-01 ITA Request to Move 83-88 Porsche 944 to ITA #30376cars addedcars addedPorsche 944 2V 83-88 reclassified from ITS to ITA effective 2021-08-01. 2021-03-01 ITA Request 2nd Generation Camry to ITB #30007cars addedcars addedToyota Camry 1987-91 4 Cyl DOHC 1998cc added to ITA at 2255 lbs minimum weight. 2021-03-01 ITB Request 2nd Generation Camry to ITB #30007cars addedcars addedToyota Camry 1987-91 4 Cyl DOHC 1998cc added to ITA at 2255 lbs minimum weight. 2021-03-01 ITB Request for Car Eligibility #30070wordingwordingITB now allows B-Spec prepared vehicles to compete if compliant with current B-Spec rules for that vehicle. 2020-12-01 ITA Request to clarify ITA Civic Si 92-95 #28868engineslowerITA 92-95 Civic EX drops VTEC designation; both EX and Si specify D16Z6 engine. 2020-12-01 ITA Request to classify a 2003 Honda Accord #28898cars addedcars addedITR Honda Accord V6 Coupe 03-05 and 06-07 newly classified at 3175 lbs minimum weight. 2020-12-01 ITB Request to classify a 2003 Honda Accord #28898cars addedcars addedITR Honda Accord V6 Coupe 03-05 and 06-07 newly classified at 3175 lbs minimum weight. 2020-05-01 ITA Cleanup 4.f Traction control #28609wordingwordingImproved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. 2020-05-01 ITB Cleanup 4.f Traction control #28609wordingwordingImproved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. 2019-08-31 ITA Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbsfasterITA Ford Escort ZX2 year range extended to 2003, minimum weight reduced to 2355 lbs. 2019-08-31 ITB Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbsfasterITA Ford Escort ZX2 year range extended to 2003, minimum weight reduced to 2355 lbs. 2019-08-31 ITB Request to allow 07-11 Mini in ITB as BPSEC configuration #26997cars addedcars addedITB Mini Cooper extended to 2013 model year, allowed in B-Spec or IT specification with respective weights. 2019-05-01 ITA Request clarification on 9.1.3 D1.A.2 #26237wordingwordingIT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions. 2019-05-01 ITB Request clarification on 9.1.3 D1.A.2 #26237wordingwordingIT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions. 2019-01-01 ITB Request to Dual-Class Honda Fit and B-Spec Cars Into ITC and #25347cars addedcars addedITB dual-classifies Honda Fit 09-13 at 2270 lbs and 14-15 at 2705 lbs, plus seven other B-Spec cars into ITC.

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. 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.