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 Circuit de Lédenon

5 corners on the Full Circuit layout, ranked for this car. Pick one, and say what the car's doing.

Car
Circuit
Corner 5 on this lap

marks the corners that decide the lap.

What's it doing?
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BMW M2 Racing (G87) · Circuit de Lédenon · T2 The Drop
Rear steps out on entryOversteer 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.
T2 The Drop — The road falls away sharply as you commit, and you cannot see where it goes.
Technique — Brake before the descent, not in it. The rear goes light exactly where you would want to be slowing.
The rear is unloading faster than it can hold — bias too far back, a diff too free on coast, or too much rake making the nose bite while the rear is light.
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; braking-limited, so brake tools move up; platform-limited, so ride height and heave move up.
  1. 01
    Get the braking done in a straight line½ the zonetechnique

    Braking and turning at once asks the rear for both jobs at the limit of one. Separating them gives the rear only one thing to do.

    Slower in theory, faster in practice for most drivers in a low-grip car.

  2. 02
    Release the brake more graduallyover ½ secondtechnique

    Coming off the brake abruptly throws load rearward and the rear steps before you have finished turning.

    None — a smoother release is never the slower option.

  3. 03
    Slow the turn-in itselfhalf the speedtechnique

    A fast hand movement is a fast weight transfer. The rear steps because it was asked to change direction quicker than it could load.

    None. A slower input almost never costs time on entry.

  4. 04
    Brake bias forward0.5%brake

    Keeps load on the front under braking and stops the rear going light while you're still slowing.

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

  5. 05
    More coast diff lock5–10%diff

    Ties the rear wheels together off-throttle so the car resists rotating past what you asked for.

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

  6. 06
    Less engine braking1 stepdiff · adv

    Reduces drag on the rear axle when you lift — often the tidiest fix for a car that rotates on the overrun.

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

  7. 07
    More diff preload1–2 stepsdiff

    Steadies the rear at low torque — the transition from brake to throttle.

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

  8. 08
    Softer rear anti-roll bar1 clickbar

    Rear rolls and builds slip angle rather than snapping. Also keeps load on the inside rear on exit.

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

  9. 09
    Stiffer rear slow rebound1–2 clicksdamper

    Holds the rear loaded as you come off the brakes — steadier entry.

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

  10. 10
    More rear toe-in0.05–0.1°geo

    Straight-line and entry stability for very little else — the standard band-aid for a nervous rear.

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

  11. 11
    Less rake — lower the rear or raise the front1–2 mmaero

    Moves aero balance rearward and calms the car in the quick stuff.

    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.

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Sideways

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