BoP Lab / Michelin Raceway Road Atlanta

ITB vs P pace at Michelin Raceway Road Atlanta

Quickest here: P 1:18.214 Todd Vanacore, Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta qualifying

ITBPsolid race · dashed qualifying · slower is lower

	Event	ITB			P
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs ITB
	Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST26MAR062026-03-06				1:18.214Todd Vanacore · fastest of 2-9.134s (-10.46%)	1:19.339Todd Vanacore · fastest of 2-7.328s (-8.46%)	148.2Todd Vanacore+12.8 mph (+9.5%)
7 rule changes (ITB: 1, P: 6)1 cars added · 1 engine · 1 induction · 1 suspension & brakes · 3 wording · Turbocharged and supercharged cars ineligible for IT classes unless explicitly listed. · Prototype carbon-carbon and carbon-ceramic brake rotors now permitted instead of prohibited. · P class 13B rotary engine restrictor changes to 40mm SIR fuel injection or 41.5mm venturi carburetor. · Prototype class adds Radical SR3 spec line to Table 1 effective 9/1/25. · Prototype P2 cars may now run P2 spec or modified Prototype spec in Prototype class; clarified language and added Radical Cup series table. · Prototype Engine Table A 2-cycle restrictor reduces from 40mm to 38mm venturi size. · Class P adds clarification notes on restrictor requirements, throttle bodies, Mazda 12A engine spec, and P2 auto-based engine rules.showhide 2026-02-01 ITB E&O: Turbo Cars in IT #39691wordingwordingTurbocharged and supercharged cars ineligible for IT classes unless explicitly listed. 2026-01-01 P Request to Continue to Allow Carbon Brakes #39476suspension & brakessuspension & brakesPrototype carbon-carbon and carbon-ceramic brake rotors now permitted instead of prohibited. 2025-09-01 P 13B Rotary Engine Rules Change Request #38856engineunclearP class 13B rotary engine restrictor changes to 40mm SIR fuel injection or 41.5mm venturi carburetor. 2025-09-01 P Add Radical Cup series Radical SR3 spec line to Table 1 #38916cars addedcars addedPrototype class adds Radical SR3 spec line to Table 1 effective 9/1/25. 2025-09-01 P Clarify spec line cars language #38943wordingwordingPrototype P2 cars may now run P2 spec or modified Prototype spec in Prototype class; clarified language and added Radical Cup series table. 2025-08-01 P RM 25-05 - Prototype Engine Table A, 2 Cycle Restrictor Change #38929inductionslowerPrototype Engine Table A 2-cycle restrictor reduces from 40mm to 38mm venturi size. 2025-05-01 P Add missing punctuation marks #38150wordingwordingClass P adds clarification notes on restrictor requirements, throttle bodies, Mazda 12A engine spec, and P2 auto-based engine rules.
	Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST25MAR072025-03-07				1:27.348Gary Crook · fastest of 3 · top 3 within 2.9s	1:26.667Gary Crook · fastest of 3 · top 3 within 4.5s	135.4Gary Crook
12 earlier rule changes on record, in force before Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta (from 2019)5 cars added · 1 weight · 6 wording · Prototype Staudacher and unrestricted engine notes corrected for minimum weight wording. · Prototype class renamed from P1 to P, affecting designation throughout rules with no performance changes. · IT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed. · Honda Fit MT and CVT 2015-2019 added to ITB at 2525 lbs, may run B-Spec or IT spec. · 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. · 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. · 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. · 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 2025-02-01 P Correct text in engine table notes #37606wordingwordingPrototype Staudacher and unrestricted engine notes corrected for minimum weight wording. 2025-02-01 P Update Prototype class designation #37653wordingwordingPrototype class renamed from P1 to P, affecting designation throughout rules with no performance changes. 2024-04-01 ITB Battery Change #35854wordingwordingIT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed. 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. 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 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 ITB Cleanup 4.f Traction control #28609wordingwordingImproved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. 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 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.