Corner Lab

Your car, the corner, and what it's doing there — the setup changes worth trying, in order.

The main event

BMW M2 Racing (G87) at Lime Rock Park

7 corners on the Grand Prix layout, ranked for this car. Pick one, and say what the car's doing.

Car
Circuit
Corner 7 on this lap

• marks the corners that decide the lap.

What's it doing?
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The answer above is complete, but all four controls need JavaScript. Instead: the lap guide has every corner here, and BMW M2 Racing (G87) lists this car everywhere else.

BMW M2 Racing (G87) · Lime Rock Park · T1 Big Bend
Pushes at the apexUndersteer family
Fixed setup. The garage is shut for this car. The order below is unchanged — what would work still would — but anything you cannot reach is greyed where it stands.
T1 Big Bend — A long, fast right taken almost flat, and the front tyre is loaded for far longer than it feels.
Technique — One steering input and hold it. Correcting mid-corner scrubs the front and you pay for it all the way down No Name.
Steady-state, so this is a mechanical or aero grip split, not a damper problem. Dampers will not fix this.
Carried as a shut garage until iRacing's own material says otherwise: the ranking is technique, which is true whatever the garage turns out to allow; high speed, so aero is live here.
  1. 01
    Open the wheel and wait for it⅛ turntechnique

    Mid-corner push is a front tyre being asked for more angle than it has grip for. Less angle is more grip, and the car comes back to you.

    Requires trusting the car for about half a second. That is the hard part.

  2. 02
    Use the full width on entry1 car widthtechnique

    A wider entry makes the corner's radius larger, which is the only way to ask less of a front tyre without going slower.

    Needs the room to be there. Check your mirrors first.

  3. 03
    Hold one steady input1 inputtechnique

    Sawing at the wheel through a corner never lets the front tyre settle at a slip angle, so it spends the whole corner somewhere below its best.

    None. A quiet wheel is faster almost everywhere.

  4. 04
    Slow the entry, wait for the car5 km/htechnique

    Overdriving the entry saturates the front tyre into understeer you cannot unwind before the exit.

    None — costs nothing to test.

  5. 05
    Softer front anti-roll bar1 clickbar

    Lets the front axle roll and build slip angle, adding front grip as the car takes its set.

    Fixed-setup car — nothing in the garage is adjustable.

  6. 06
    Lower front tyre pressure0.5 psityre

    Bigger front contact patch. Verify against carcass temps rather than guessing.

    Fixed-setup car — nothing in the garage is adjustable.

  7. 07
    Stiffer rear anti-roll bar1 clickbar

    Takes rear grip away to shift balance toward rotation.

    Fixed-setup car — nothing in the garage is adjustable.

  8. 08
    More front negative camber0.1°geo

    Keeps the loaded front tyre flat at full roll. Only helps if the outer shoulder is running hot.

    Fixed-setup car — nothing in the garage is adjustable.

  9. 09
    More rake — raise the rear1–2 mmaero

    Shifts aero balance forward. Only meaningful where there's real speed.

    Fixed-setup car — nothing in the garage is adjustable.

  10. 10
    Softer front springsone stepspring

    Front grip, plus a lower nose under load which adds a little front downforce as a bonus.

    Fixed-setup car — nothing in the garage is adjustable.

The lap

Where the corners fall

Sequence and speed, left to right. Not a scale map. The lap guide takes each corner in turn.

StraightFast cornerMedium cornerSlow corner
Sideways

Where to go next

This car, other circuits
Autódromo José Carlos PaceGrand PrixAutodromo Nazionale MonzaGrand PrixCanadian Tire Motorsports ParkSingle configurationCharlotte Motor SpeedwayRoval 2025Circuit de LédenonFull CircuitCircuit de Spa-FrancorchampsGrand Prix PitsCircuit des 24 Heures du Mans24 HeuresCircuito de NavarraSpeed CircuitDaytona International SpeedwayRoad CourseFuji International SpeedwayNo ChicaneLime Rock ParkFull CourseMobility Resort MotegiGrand PrixMotorsport Arena OscherslebenGrand PrixOkayama International CircuitFull CourseOulton ParkInternationalOulton ParkFostersRoad AmericaFull CourseRoad AtlantaFull CourseSummit Point RacewaySingle configurationTsukuba Circuit2000 FullVirginia International RacewayFull CourseVirginia International RacewayNorth CourseWatkins Glen InternationalBootWinton Motor RacewayNational Circuit
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