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Left foot braking

Left foot braking is a technique used frequently in rallying, but can be equally useful on the road or track for the following:

  • Reducing understeer into a corner
  • Reducing drive loss through spinning wheels
  • Removing the pedal transfer time between accelerator and brake
Left foot braking

Left foot braking

Reducing understeer into a corner

The theory here is that you can feather the brakes into a corner (trail braking), while transitioning to progressive throttle at the apex. This can lead to a very smooth transition between braking and acceleration and is less likely to unsettle the car through unwanted weight transfer. It also keeps the weight at the front of the vehicle for as long as possible, thus providing more grip, a better turn in and reduces the possibility of understeer.

Reducing drive loss through spinning wheels

This technique is particularly useful for a front wheel drive car without a limited slip differential. On the exit of the corner, it is a common symptom for one the unladen front wheel to spin while applying throttle. This spinning wheel is preventing all of the power from transferring to the road and thus slowing the exit speed. By feathering the brake with the left foot, this can prevent or reduce this wheelspin, and get a better exit.

Removing pedal transfer time

Using the left foot to brake removes the pedal transition time from brake to accelerator and vice versa. This can shave fractions of a second off a lap time when done well, but cannot be used when it is necessary to change down a gear (unless you decide not to use the clutch!)

Common mistake

Left foot braking is an advanced technique, and should only be attempted after lots of practice. When learning to left foot brake, you’ll initially press the pedal far too hard as you’ll be used to the action of pressing a clutch all the way to the floor. It takes time to re-programme the ‘muscle memory’ of your foot and leg, and a bit of empty tarmac is highly recommended.

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2 thoughts on “Left foot braking

  • I think you should talk about this particular aspect of left foot braking below.

    I tend to use left foot braking on corner entry to change the brake bias working the throttle against brakes on the drive wheels.
    eg: If I’m in a front wheel drive the front brakes will be resisted by the drive wheels thus moving the brake bias rearward and reduces under steer and in a rear wheel drive sometimes I’ll use this to move the bias forwards if I need a more stable entry.

    note: I only use neutral throttle just enough to resist the brakes on the driving wheels but not so much that it would accelerate just the right amount.

    • Interesting point, but we think the weight transfer would be the dominant force in this situation and changing the brake bias would have less of an impact on the behaviour of the car

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