BoP Lab / Michelin Raceway Road Atlanta
STL vs SMX vs F6 vs SM pace at Michelin Raceway Road Atlanta
Quickest here: STL 1:35.212 Danny Steyn, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta race · SMX 1:24.667 Tyler Gonzales, Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta race · F6 1:30.014 Clint McMahan, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta qualifying · SM 1:41.798 Danny Steyn, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta qualifying
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| Qual best | Race best | Trap | Qual best | Race best | Trap | vs STL | % of STL | Qual best | Race best | Trap | vs STL | % of STL | Qual best | Race best | Trap | vs STL | % of STL | |||
| Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST26MAR062026-03-06 | 1:37.000Danny Steyn · fastest of 15 · top 5 within 1.6s+0.012s (+0.01%) | 1:36.825Danny Steyn · fastest of 14 · top 5 within 3.2s-0.382s (-0.39%) | 126.5Derek Ketchie+6.5 mph (+5.4%) | 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%) | -12.158squal +1.517s | 87.4%qual 101.6% | 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%) | -3.106squal -6.961s | 96.8%qual 92.8% | 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%) | +5.786squal +5.324s | 106.0%qual 105.5% | ||
10 rule changes (STL: 3, SMX: 4, SM: 3)2 weight · 8 wording · STL minimum weights increase across all classes, 1300 cc gains 195 lbs to 1950, up to 1850 cc at 2500. · STL/STU Lotus weight reduced: Evora GT4 to 2700 lbs, Elise Cup R to 2250 lbs, Elise/Exige SC to 2450-2550 lbs. · 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 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. · SM cars limited to one set of Hoosier SM 7.5 P205/50/ZR17 per Super Tour event weekend for dry sessions. · 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. · STL Mazda MX5 Challenge minimum weight now references GCR 9.1.7.1 instead of 2500 lbs; spec components removed, only alternative tires allowed.show
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| Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST25MAR072025-03-07 | 1:36.988Mike Taylor · fastest of 13 · top 5 within 2.0s+0.632s (+0.66%) | 1:37.207Mike Taylor · fastest of 11 · top 5 within 1.3s+0.354s (+0.37%) | 120.1Derek Ketchie+1.7 mph (+1.5%) | 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%) | +1.558squal +1.674s | 101.6%qual 101.7% | 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%) | +5.418squal +5.860s | 105.6%qual 106.0% | |||||||
11 rule changes (STL: 1, SMX: 5, SM: 5)11 wording · SMX allows OE instrument cluster relocation for aftermarket dash mounting, with wiring re-routed only; alternate gauges now permitted. · SMX allows OE instrument cluster relocation for aftermarket dash mounting, with wiring re-routed only; alternate gauges now permitted. · STL/STU: 90-05 Mazda Miata alternate front wheel hubs moved from General to specific part approval. · 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. · 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.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST24MAR082024-03-08 | 1:36.356Danny Steyn · fastest of 15 · top 5 within 3.3s-0.113s (-0.12%) | 1:36.853Danny Steyn · fastest of 17 · top 5 within 2.8s+1.641s (+1.72%) | 118.3Mike Taylor-8.8 mph (-6.9%) | 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 | +3.071squal +2.608s | 103.2%qual 102.7% | 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%) | -6.586squal -6.342s | 93.2%qual 93.4% | 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%) | +6.142squal +6.264s | 106.3%qual 106.5% | ||
5 rule changes (STL: 5)2 induction · 1 engine · 2 wording · STL and STU power steering rules clarified to permit electric-assisted and hydraulic-assisted steering systems. · STL Acura/Honda B-series and Mazda MZR restrictors reduced 2mm; minimum weights down 25–75 lbs for 1900–2000cc engines. · STL Mazda 12A must keep 5th and 6th intake port actuators and valves, no longer allowed removal or disabling. · STL Mazda RX-7 12A (79-85) now allows auto-type 2 bbl with 42mm choke(s) on dual-y manifold as alternate to stock Nikki 4 bbl. · STL ITA/ITS RX7 and 1985+ ITA/ITS/ITB/ITC vehicles clarified to conform to section 9.1.4.2 tire specifications.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST23MAR102023-03-10 | 1:36.469Danny Steyn · fastest of 16 · top 5 within 3.9s+0.493s (+0.51%) | 1:35.212Danny Steyn · fastest of 17 · top 5 within 3.8s-0.267s (-0.28%) | 127.1Mike Taylor+0.7 mph (+0.6%) | 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 | +0.035squal -0.678s | 100.0%qual 99.3% | 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%) | +7.341squal +6.150s | 107.7%qual 106.4% | |||||||
3 rule changes (STL: 1, SM: 2)1 weight · 2 wording · SM Mazda MX-5 Miata 01-05 weight increases to 2450 lbs, or 2465 with alternate bore. · STL Spec MX5 clutch, wheels, and tyres specified: ACT 0000-02-5004-G6, 17x8 wheels, Toyo RR and RA1 235-40-17. · SM Majors must run authorized Penske shock and mount; Regional competitors' requirement eligibility clarified.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST22MAR122022-03-12 | 1:35.976Danny Steyn · fastest of 18 · top 5 within 2.9s-0.449s (-0.47%) | 1:35.479Danny Steyn · fastest of 18 · top 5 within 3.2s-1.326s (-1.37%) | 126.3Trever Degioanni+2.5 mph (+2.1%) | 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%) | +6.385squal +6.838s | 106.7%qual 107.1% | ||||||||||||
12 rule changes (STL: 11, SM: 1)2 induction · 1 cars added · 1 engine · 1 tyres & wheels · 1 weight · 6 wording · STU normally aspirated engines: minimum weights reduced up to 310 lbs; single throttle body weight reduction removed. · STL and STU Improved Touring vehicles must conform to 9.1.4 Tires & Wheels requirements. · STL and STU piston engines clarified: intake manifold and cylinder head porting remains free. · STL Mazda Renesis flat plate restrictor increases from 55mm to 60mm. · STL Mazda RX-7 12A 79-85 clarifies carburetor, emissions, and water jacket modification rules. · STL Spec MX-5 removes redundant specification line; no performance change. · STL Volkswagen 2.0L TFSI 1984cc classified with turbocharger removal required, meeting all other STL specs. · STL Pontiac Solstice/Saturn Sky allowed 4" ride height. · STL Mazda B5 DOHC added to classification with standard STL regulations. · STL Honda B16A JDM restrictor reduced from 54mm to 53mm. · SM adds procedures for testing obsolete part replacements and BOP updates in sanctioned events with CRB approval. · ST oil coolers and filters now explicitly allowed to be added or substituted; wording clarifies existing permissions.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST21MAR192021-03-19 | 1:36.425Danny Steyn · fastest of 24 · top 5 within 3.0s | 1:36.805Danny Steyn · fastest of 22 · top 5 within 3.1s | 123.8Eric Diaz | 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 | +5.759squal +5.373s | 105.9%qual 105.6% | ||||||||||||
37 earlier rule changes on record, in force before Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta (from 2019)8 induction · 4 cars added · 3 weight · 2 aero · 1 engine · 1 suspension & brakes · 18 wording · STL GM Ecotec engines now permit any combination within the family, must use 55mm flat plate restrictor. · STL/STU 90-05 Mazda Miata gains approval for Mazda Motorsports Development alternate front wheel hubs. · ST cars may relocate ABS actuation hardware and wiring anywhere in engine compartment. · STL rear wing trailing edge, including end plates and gurney flap, maximum rearward mounting clarified to center of rearmost bodywork. · STL allows OEM gear sets from same manufacturer transmissions with input shaft modifications for fitment. · STL RWD strut suspension weight penalty cut to 0.5%, other RWD cut to 2.5%. · STL Honda F20C loses 2% weight penalty, minimum weight reduced by approximately 35 lbs. · STL Honda B16/B17/B18C1 restrictor tightened to 53mm; B18C variants and Mazda MZR to 52mm. · ST aero devices and reference areas now include end plates but exclude fasteners protruding over 1/2 inch. · SM aftermarket radiators must mount in original location, maintain core plane, require no body modifications, block openings, keep one OEM fan in stock location; 1990-1997 cars may install upper radiator seal NA75-50-OK7A. · SM rear brake calipers may use single bracket under upper retaining bolt to prevent pin failure. · STL and STU clarify weight adjustment calculation order: engine adjustments first, then chassis adjustments. · STL and STU rear wing rules clarify that wicker is a Gurney flap; no performance change. · GT3 and STU add Borg-Warner EFR6258 to approved turbocharger list. · STL adds 2016-2019 Mazda MX-5 Global Cup at 2000cc, 2450-2550 lbs minimum weight. · STL Mazda MX-5 Club Model 06-15 allows Mazda header part number 0000-06-5407-NC. · STL Honda/Acura B18 non-C gets 54mm restrictor; B18C variants drop B18C1, get 53mm restrictor. · STL Honda B18 restrictor reduced from 54mm to 53mm flat plate; B18C1 added with 54mm restrictor. · STU GM Ecotech LNF now allowed with turbo removed or with LE5 head and intake manifold, meeting STL specs. · STL Mazda MZR restrictor reduced from 54 mm to 53 mm. · STL Mazda MZR restrictor reduced from 55 mm to 53 mm. · STL Mazda Spec MX5 Challenge adds approved wheel part numbers 0000-04-5706-GM, 0000-04-5706-SL. · Mazda Spec MX-5 Challenge classified in STL with 2000cc displacement and 2500 lbs minimum weight. · STU alternate intake manifolds now allowed case-by-case instead of prohibited. · STL Acura/Honda B18 except C engine restrictor increases from 53mm to 54mm flat plate. · STL and STU ride height measurement clarified: without driver, at rocker panel lowest point, excluding pinch weld. · SM fuel pump and filter must be Mazda or OEM Equivalent part. · STL adds VW 1.8L R4 20VT 1781cc, 1 minimum weight, turbo removed permitted. · STL Mazda Renesis minimum weight reduced from 2800 to 2700 lbs. · STL Mazda MX-5 Cup brake pad compound changed to open. · STL adds Acura/Honda B18C1 GSR with 54mm flat plate restrictor and port matching limited to 1 inch. · STL Mazda 12 and 13B now permit port matching; previous ban removed. · SM 1999-2000 model year cars may use replacement Mazda ECU and injector harnesses, unmodified. · SM electrical rules reorganized and clarified; alternator external regulation now prohibited except via OEM ECU/kill switch. · SM removes tire tread protrusion beyond fender opening requirement from GCR 9.1.7.C.5. · STL B18C Type R variants get 54mm flat plate restrictor; B17 also gets 54mm restrictor. · STL Mazda Miata removes maximum displacement limit and adjusts minimum weight.show
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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 STL" is the class's best as a share of STL'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 STL'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.