BoP Lab / Classes / P2

P2 vs FA vs SM vs FE2 pace at every track

Lap times across years say as much about the weather as the class. % of P2 is each class's best lap as a share of P2's on the same day, so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)

ASB-SpecEPvsFA ×FCvsFE2 ×FFFPFVFXGT1GT2GTXHPPP2×vsSM ×SMXSRF3STLSTUT1T2T3T4Show 51 inactive classes

Series Runoffs Super Tour Both

Reference · what % is measured against

Tracks · untick to narrow Auto Club Speedway Barber Motorsports Park Blackhawk Farms Raceway Buttonwillow Raceway Park Circuit of St. Louis (formerly Gateway Motorsports Circuit of the Americas Daytona International Speedway Grattan Raceway Hallett Motor Racing Circuit Homestead-Miami Speedway Indianapolis Motor Speedway Laguna Seca Michelin Raceway Road Atlanta Mid-Ohio Sports Car Course New Jersey Motorsports Park NOLA Motorsports Park Pacific Raceways Pittsburgh International Race Complex Portland International Raceway Pueblo Motorsports Park Road America Sebring International Raceway Sonoma Raceway Summit Point Raceway Thunderhill Raceway Park Virginia International Raceway Watkins Glen International Willow Springs Raceway World Wide Technology Raceway

Closest to the field: P2 100.0% of P2 Jeff Shafer, Daytona International Speedway Runoffs 2015 race · FA 79.9% of P2 Alex Mayer, Virginia International Raceway Runoffs 2022 race · SM 102.4% of P2 Travis Wiley, Virginia International Raceway Runoffs 2022 race · FE2 97.2% of P2 Jason Conzo, Virginia International Raceway Runoffs 2022 race

% of P2Lap times

P2FASMFE2solid race · dashed qualifying · slower is lower

P2FASMFE2solid 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, less is quicker, so up the chart is quicker

	Event	P2			FA					SM					FE2
	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
	Road America Runoffs 20262026-09-28	2:10.606Greg Gyann · fastest of 11 · top 5 within 5.3s+3.201s (+2.51%)	2:09.441Mike Reupert · fastest of 11 · top 5 within 4.2s+1.119s (+0.87%)	155.0Matt Strand+2.4 mph (+1.6%)	2:02.513Dudley Fleck · fastest of 9 · top 5 within 6.9s+1.590s (+1.31%)	2:03.334James French · fastest of 10 · top 5 within 1.4s+0.680s (+0.55%)	158.6John McAleer+1.5 mph (+1.0%)	-6.107squal -8.093s	95.3%qual 93.8%	2:42.173Brett Kowalski · fastest of 34 · top 5 within 0.3s-0.938s (-0.58%)	2:42.725Francisco Barroso · fastest of 35 · top 5 within 0.2s-1.705s (-1.04%)	119.6Wyatt Couch+0.3 mph (+0.3%)	+33.284squal +31.567s	125.7%qual 124.2%	2:12.326Franklin Futrelle · fastest of 8 · top 5 within 1.9s-0.149s (-0.11%)	2:11.881Franklin Futrelle · fastest of 8 · top 5 within 1.6s-1.458s (-1.09%)	143.5Steve Whitston-5.5 mph (-3.7%)	+2.440squal +1.720s	101.9%qual 101.3%
10 rule changes (FA: 7, SM: 2, FE2: 1)3 induction · 2 engine · 1 weight · 1 wording · 3 othershowhide 2026-08-01 FA Update sealed engine teardown section #40621engine 2026-07-01 SM Rear Toe Link #40271other 2026-06-01 FA Motor Classification #40175weight 2026-04-01 SM Part Number Change Request #39914wording 2026-02-01 FA Pro Mazda Classification and Performance Enhancement Proposal #39411induction 2026-01-01 FA Alternate Intake Manifold for MZR #38223induction 2026-01-01 FA Engine Compression Rule Change Request #39302engine 2026-01-01 FA Change Formula 1000 allowances #39608induction 2025-11-01 FA Re-Consider USF Pro 2000 Car for Formula Atlantic Class #38783other 2025-10-01 FE2 FE & FE2 Bubble Tail #38978other
	Road America Runoffs 20252025-09-29				2:00.923Hans Peter · fastest of 12 · top 5 within 2.4s-0.637s (-0.52%)	2:02.654Hans Peter · fastest of 11 · top 5 within 3.1s+0.864s (+0.71%)	157.0Shane Kennett-3.0 mph (-1.9%)			2:43.111Bobby Gossett · fastest of 32 · top 5 within 0.3s+2.005s (+1.24%)	2:44.430Kyle Greenhill · fastest of 28 · top 5 within 0.3s+2.944s (+1.82%)	119.3Francisco Barroso-0.6 mph (-0.5%)			2:12.475Franklin Futrelle · fastest of 11 · top 5 within 1.4s+0.969s (+0.74%)	2:13.339Franklin Futrelle · fastest of 10 · top 5 within 0.6s+0.591s (+0.45%)	149.0Steve Whitston+3.7 mph (+2.6%)
9 rule changes (P2: 1, FA: 3, SM: 4, FE2: 1)3 tyres & wheels · 1 cars added · 1 weight · 1 wording · 3 othershowhide 2025-07-01 FA Ligier JS F3 Tire Choice #38434tyres & wheels 2025-06-01 SM SMX Data Submission - Penalties #38248other 2025-06-01 SM SMX Penaly Clarification updated language #38337wording 2025-05-01 SM Clarify Tire Marking Regs #38005tyres & wheels 2025-04-01 FE2 Driver Safety & Comfort #37965other 2025-03-01 FA Update Formula Renault 2.0 spec line notes #37853tyres & wheels 2025-02-01 FA Classify FR European Championship car as spec line car in Table 2 #37658cars added 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
	Road America Runoffs 20242024-10-01	2:07.405Bart Wolf · fastest of 14 · top 5 within 3.0s-1.109s (-0.86%)	2:08.322Bart Wolf · fastest of 13 · top 5 within 0.6s-1.471s (-1.13%)	152.5Lucian Pancea-0.6 mph (-0.4%)	2:01.560Hans Peter · fastest of 13 · top 5 within 2.0s-2.714s (-2.18%)	2:01.790Dudley Fleck · fastest of 12 · top 5 within 3.3s-2.956s (-2.37%)	160.0Brandon Schwarz+9.4 mph (+6.3%)	-6.532squal -5.845s	94.9%qual 95.4%	2:41.106Ethan Goulart · fastest of 49 · top 5 within 0.5s-1.103s (-0.68%)	2:41.486Brett Kowalski · fastest of 43 · top 5 within 0.3s-2.262s (-1.38%)	119.9Alex Bertagnoli-1.4 mph (-1.2%)	+33.164squal +33.701s	125.8%qual 126.5%	2:11.506Porter Aiken · fastest of 18 · top 5 within 0.5s-1.300s (-0.98%)	2:12.748Porter Aiken · fastest of 17 · top 5 within 2.0s-0.523s (-0.39%)	145.3Porter Aiken+1.9 mph (+1.3%)	+4.426squal +4.101s	103.4%qual 103.2%
9 rule changes (P2: 5, SM: 4)5 engine · 1 suspension & brakes · 1 tyres & wheels · 1 wording · 1 othershowhide 2024-09-01 SM SMX Camera Rule Correction #36496wording 2024-09-01 SM AIM ECU Protocol #36556engine 2024-09-01 SM OE versus OEM Definitons #36608other 2024-09-01 SM Shifter Bushing #36611suspension & brakes 2024-05-01 P2 CN Spec ECU #35835engine 2024-05-01 P2 E&O - Correct FIA Group CN spec line notes #35900tyres & wheels 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 2023-12-01 P2 Correct Table 1 for Engine Date Range Specifications #35182engine
	Virginia International Raceway Runoffs 20232023-09-23	1:48.590Greg Gyann · fastest of 12 · top 5 within 1.7s+1.024s (+0.95%)	1:48.829Lucian Pancea · fastest of 11 · top 5 within 0.9s-27.005s (-19.88%)	150.9Lucian Pancea-0.2 mph (-0.2%)						2:14.986Danny Steyn · fastest of 52 · top 5 within 0.1s+0.322s (+0.24%)	2:16.229Julian DaCosta · fastest of 46 · top 5 within 0.3s-2.878s (-2.07%)	120.3Jim Drago+1.1 mph (+0.9%)	+27.400squal +26.396s	125.2%qual 124.3%	1:50.665Charles Russell Turner · fastest of 26 · top 5 within 2.3s-0.188s (-0.17%)	1:51.098Franklin Futrelle · fastest of 19 · top 5 within 1.4s-20.947s (-15.86%)	141.3Franklin Futrelle-0.6 mph (-0.4%)	+2.269squal +2.075s	102.1%qual 101.9%
16 rule changes (P2: 8, FA: 7, SM: 1)5 weight · 3 engine · 3 tyres & wheels · 2 induction · 1 cars added · 1 wording · 1 othershowhide 2023-06-01 FA Simplify Pro Formula Mazda wheel allowance #34190tyres & wheels 2023-05-01 FA E&O - Correct Pro Formula Mazda spec line dimensional equivalent #34085tyres & wheels 2023-05-01 FA Add new spec line for MSR Formula Mazda FMzR to Table 2 #34139other 2023-05-01 P2 Clarify minimum side body height requirement #34143tyres & wheels 2023-05-01 P2 Clarify closed cockpit single seat car allowance #34144wording 2023-04-01 P2 Remove redundant effective date language and update engine table #34012engine 2023-04-01 P2 E&O - Correct dimensional equivalents #34038weight 2023-01-01 FA BDA Displacement #33431engine 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 2022-12-01 FA Reclassify 2010-2017 Formula Renault 2.0 as a spec line car in FA #33395weight 2022-12-01 FA Change Swift 016 2.3L restrictor size and minimum weight #33472induction -30 lbs 2022-10-01 FA Pro Formula Mazda Dimension E&O #33160induction
	Virginia International Raceway Runoffs 20222022-09-24	1:47.566Tim Day Jr · fastest of 12 · top 5 within 3.0s-1.545s (-1.42%)	2:15.834Greg Gyann · fastest of 12 · top 5 within 10.1s+25.576s (+23.20%)	151.1Robert Iversen+1.8 mph (+1.2%)	1:44.703Chip Romer · fastest of 7 · top 5 within 4.0s+3.158s (+3.11%)	1:48.507Alex Mayer · fastest of 4 · top 4 within 4.2s+5.400s (+5.24%)	154.6Austin Hill-1.4 mph (-0.9%)	-27.327squal -2.863s	79.9%qual 97.3%	2:14.664Danny Steyn · fastest of 60 · top 5 within 0.2s+0.112s (+0.08%)	2:19.107Travis Wiley · fastest of 58 · top 5 within 0.9s+2.648s (+1.94%)	119.2Jonathan Neudorf-0.6 mph (-0.5%)	+3.273squal +27.098s	102.4%qual 125.2%	1:50.853Charles Russell Turner · fastest of 25 · top 5 within 1.1s-0.209s (-0.19%)	2:12.045Jason Conzo · fastest of 22 · top 5 within 1.8s+19.891s (+17.74%)	141.9Eric Cruz-0.6 mph (-0.5%)	-3.789squal +3.287s	97.2%qual 103.1%
18 rule changes (P2: 10, FA: 7, SM: 1)5 engine · 4 tyres & wheels · 2 aero · 2 weight · 1 suspension & brakes · 1 wording · 3 othershowhide 2022-05-01 FA Update FR Americas rulebook requirement #32491engine 2022-05-01 FA Clarify verification of sealed engine compliance #32522engine 2022-05-01 FA Clarify Formula Lites and FR Americas sealed engine requirement #32523engine 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 FA E&O FA Transmission section #32251tyres & wheels 2022-04-01 FA E&O Swift 016 2.5 liter Aero column #32363aero 2022-04-01 P2 After Market to Aftermarket #32373other 2022-04-01 SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes 2022-03-01 FA Closing the Gap #31934other 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 FA Reorganize Tables 1 and 2 #31985weight 2022-02-01 P2 E&O Engine section #31969engine 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
	Indianapolis Motor Speedway Runoffs 20212021-09-25	1:33.235Tim Day Jr · fastest of 16 · top 5 within 3.3s+1.409s (+1.53%)	1:35.322Tim Day Jr · fastest of 10 · top 5 within 4.8s+2.841s (+3.07%)	150.3Robert Iversen	1:29.701James French · fastest of 18 · top 5 within 2.7s-0.256s (-0.28%)	1:30.650James French · fastest of 17 · top 5 within 6.1s-0.715s (-0.78%)	155.5James French	-4.672squal -3.534s	95.1%qual 96.2%	1:57.695Brian Henderson · fastest of 90 · top 5 within 0.5s-0.611s (-0.52%)	1:58.837Brian Henderson · fastest of 88 · top 5 within 0.3s-0.263s (-0.22%)	119.8Kyle Greenhill	+23.515squal +24.460s	124.7%qual 126.2%	1:36.395Max Grau · fastest of 28 · top 5 within 0.7s	1:36.655Max Grau · fastest of 28 · top 5 within 0.7s	146.2Gray Fowler	+1.333squal +3.160s	101.4%qual 103.4%
31 rule changes (P2: 8, FA: 22, SM: 1)9 engine · 6 weight · 3 induction · 2 removed · 2 tyres & wheels · 1 cars added · 1 wording · 7 othershowhide 2021-09-01 FA E&O Table 2 engine names #31085engine 2021-09-01 P2 P2 CN Engine Rebuild Clarification #31000engine 2021-08-01 FA Move Toyota 1800 to Table 2 #30822removed 2021-08-01 FA E&O Swift 016 wheel width reference #30939tyres & wheels 2021-08-01 P2 F5 P2 Conversion #30856other 2021-08-01 P2 Clarify minimum body width requirement #30859tyres & wheels 2021-07-01 FA Update FA rules package #30717engine 2021-07-01 FA Move Mazda MZR/Ford Duratec 2296cc and 2500cc to Table 2 #30718removed 2021-07-01 FA Clean up Table 2 Mazda MZR 2.0L and Honda Civic K20Z3 spec lines #30719other 2021-06-01 FA E&O Mazda MZR 2.0 and Honda Civic K20Z3 chassis eligibility #30632other 2021-05-01 FA Correct engine name in Swift 016 2.3 liter spec line #30447engine 2021-05-01 FA Correct engine name in Swift 016 2.5 liter spec line #30448engine 2021-05-01 FA Revise Table 1 Spec Lines and clarify application of Engine Notes #30456engine 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 FA Update Table 1 Weights for Spec Lines C, I, and K #30355weight -25 lbs 2021-04-01 FA Remove redundant reference in Table 2 spec line #30366weight 2021-04-01 FA Correct the name of the FR Americas car #30369wording 2021-04-01 FA Clean up Spec Line D in Table 1 #30372weight 2021-04-01 FA Table 2 Honda K20Z3 request #30386induction 2021-04-01 SM Updates - Obsolete Parts & BOP Parts #30438other 2021-03-01 FA E&O FA Intake Restrictors #30273induction 2021-03-01 FA Clean up Spec Lines A and B in Table 1 #30274weight 2021-03-01 FA Clean up Spec Line C in Table 1 #30275weight 2021-03-01 FA Clean up Spec Lines J and L in Table 1 #30276weight 2021-03-01 FA Move engine specifications to Pro Formula Mazda spec line notes #30278engine 2021-03-01 FA Update F3 Americas spec line #30280other 2021-03-01 P2 Add a new spec line for a 2-cycle, 3-cylinder engine up to 820cc #30272engine 2021-01-01 FA Request to classify Formula Lites Crawford FL15 #29702cars added 2020-12-01 P2 Balance of Performance adjustments effective 01-01-2021 #29822induction
	Road America Runoffs 20202020-10-02	2:08.514Robert Iversen · fastest of 12 · top 5 within 3.0s	2:09.793Robert Iversen · fastest of 12 · top 5 within 3.9s	153.1Robert Iversen	2:04.274Spencer Brockman · fastest of 11 · top 5 within 2.7s	2:04.746Spencer Brockman · fastest of 10 · top 5 within 2.4s	150.6Hans Peter	-5.047squal -4.240s	96.1%qual 96.7%	2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s	2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s	121.3Kyle Greenhill	+33.955squal +33.695s	126.2%qual 126.2%	2:12.806Scott Rettich · fastest of 25 · top 5 within 0.6s	2:13.271Owen McAllister · fastest of 23 · top 5 within 0.7s	143.4Owen McAllister	+3.478squal +4.292s	102.7%qual 103.3%
25 rule changes (P2: 6, FA: 15, SM: 2, FE2: 2)7 engine · 4 induction · 3 weight · 2 aero · 2 tyres & wheels · 1 cars added · 1 removed · 1 suspension & brakes · 1 wording · 3 othershowhide 2020-10-01 SM Radiator E&O Clarifications #29294engine 2020-09-01 FE2 FE/FE2 Oil Cooler #29293wording 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 FA Request to Adjust FB Weight for Stock Engines #29005weight 2020-06-01 FA E&O permitted engine modifications #28831engine 2020-06-01 FA E&O Transmissions #28832other 2020-06-01 FA Swift 016 Gurney flap wicker clarification #28884aero 2020-06-01 P2 Classify Elan NP01 in P2 Table 1 #28812cars added 2020-05-01 FA Remove redundant spec line in Table 1 #28720removed 2020-05-01 FA E&O general engine rules #28772engine 2020-05-01 P2 SCCA Enterprises ESR / P2 engine restrictor testing #28669induction 2020-04-01 FA Request higher compression ratio and prior weights for F1000 cars #28162engine 2020-04-01 FA Remove redundant wheel dimension provisions #28554tyres & wheels 2020-04-01 FA E&O Formula 3 spec line #28596induction 2020-04-01 P2 Add ESR inlet restrictor #27869induction 2020-03-01 FA FA weight correction/clarification #28430engine 2020-03-01 P2 Request for Fly by Wire Rule Wording Change #28247engine 2020-01-01 FA Request to merge FB into FA #25611weight 2020-01-01 FA Suggestions for FB/F1000 into FA #27319other 2020-01-01 FA Change Swift 016 - 2.3 liter Mazda Duratec restrictor size #27880induction 2020-01-01 P2 Request for addition of BMW Engine in P2 Engine Table #27821engine 2019-12-01 FA Move wheel dimensions from Bodywork subsection to #27493tyres & wheels 2019-12-01 FA Table 2 Mazda MZR 2.0 E&O #27640other 2019-12-01 FE2 FE / FE2 Update Rules #27624weight
	Virginia International Raceway Runoffs 20192019-10-05	1:49.111Robert Iversen · fastest of 14 · top 5 within 0.8s	1:50.258Greg Gyann · fastest of 13 · top 5 within 0.4s	149.4Robert Iversen	1:41.545Dario Cangialosi · fastest of 8 · top 5 within 2.8s	1:43.107Dario Cangialosi · fastest of 8 · top 5 within 1.8s	155.9Kent Vaccaro	-7.151squal -7.566s	93.5%qual 93.1%	2:14.552Todd Buras · fastest of 60 · top 5 within 0.2s	2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s	119.8Jim Drago	+26.201squal +25.441s	123.8%qual 123.3%	1:51.062Liam Snyder · fastest of 20 · top 5 within 1.3s	1:52.154Liam Snyder · fastest of 19 · top 5 within 0.7s	142.6Robert Vanman	+1.896squal +1.951s	101.7%qual 101.8%
20 rule changes (P2: 9, FA: 7, SM: 4)7 engine · 6 weight · 2 induction · 2 tyres & wheels · 1 removed · 1 wording · 1 othershowhide 2019-10-01 FA Follow up to Letter #27344 on Honda Powered FA Rules #27363removed 2019-10-01 P2 Update Engine Table Line E notes #27414engine 2019-08-31 FA Swift 014 Mazda MZR 2.0 E&O #27305weight 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 2019-06-01 P2 Request to restrict all cars #26246weight 2019-05-31 FA Adjust Line N restrictor size and minimum weight #26691weight +30 lbs 2019-05-01 FA Add data plate requirement #26707other 2019-03-01 FA Request to add FA engine spec lines #26183engine 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 FA FA MZR 2.0 Engine Specification #25814engine 2019-02-01 FA FA 016 weight increase #26063weight 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
	Sonoma Raceway Runoffs 20182018-10-10	1:28.784Tim Day Jr · fastest of 17 · top 5 within 5.0s	1:32.071Chuck Bona · fastest of 18 · top 5 within 0.9s	144.4Tim Day Jr	1:28.176Mirl Swan · fastest of 7 · top 5 within 4.0s	1:29.924Mirl Swan · fastest of 7 · top 5 within 2.6s	144.8Antony Opheim	-2.147squal -0.608s	97.7%qual 99.3%	1:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s	1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s	102.2Danny Steyn	+23.207squal +25.571s	125.2%qual 128.8%	1:35.040Flinn Lazier · fastest of 9 · top 5 within 1.5s	1:35.563Flinn Lazier · fastest of 9 · top 5 within 1.7s	126.8Scott Rettich	+3.492squal +6.256s	103.8%qual 107.0%
No rule changes on record between these events
	Indianapolis Motor Speedway Runoffs 20172017-09-25	1:31.826Jeff Shafer · fastest of 26 · top 5 within 4.9s	1:32.481Jeff Shafer · fastest of 24 · top 5 within 3.8s		1:29.957Sedat Yelkin · fastest of 12 · top 5 within 2.3s	1:31.365Keith Grant · fastest of 12 · top 5 within 1.0s		-1.116squal -1.869s	98.8%qual 98.0%	1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s	1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s		+26.619squal +26.480s	128.8%qual 128.8%
No rule changes on record between these events
	Mid-Ohio Sports Car Course Runoffs 20162016-09-19	1:20.188Jeff Shafer · fastest of 18 · top 5 within 4.0s	1:20.904Jeff Shafer · fastest of 16 · top 5 within 2.2s		1:14.920Ryan Norman · fastest of 5 · top 5 within 7.0s	1:19.009Ryan Norman · fastest of 5 · top 5 within 4.7s		-1.895squal -5.268s	97.7%qual 93.4%	1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s	1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s		+19.860squal +20.326s	124.5%qual 125.3%
No rule changes on record between these events
	Daytona International Speedway Runoffs 20152015-09-21	1:51.825Chris Farrell · fastest of 17 · top 5 within 3.6s	1:52.355Jeff Shafer · fastest of 17 · top 5 within 2.8s		1:47.758Tyler Hunter · fastest of 10 · top 5 within 3.7s	1:48.162Tyler Hunter · fastest of 8 · top 5 within 5.3s		-4.193squal -4.067s	96.3%qual 96.4%	2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s	2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s		+31.712squal +26.836s	128.2%qual 124.0%

By track

Track	Events	Typical % of P2	Best	Latest
Road America	4	100.0%3 of 4 with P2	100.0%Runoffs 2020	100.0%Runoffs 2026
Virginia International Raceway	3	100.0%	100.0%Runoffs 2019	100.0%Runoffs 2023
Indianapolis Motor Speedway	2	100.0%	100.0%Runoffs 2017	100.0%Runoffs 2021
Daytona International Speedway	1	100.0%	100.0%Runoffs 2015	100.0%Runoffs 2015
Mid-Ohio Sports Car Course	1	100.0%	100.0%Runoffs 2016	100.0%Runoffs 2016
Sonoma Raceway	1	100.0%	100.0%Runoffs 2018	100.0%Runoffs 2018

About this data

Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of P2's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.