Brake Disc Skimming

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Brake disc skimming  will…

Stop brake pedal pulsation, juddering, squeaks and squeals.

Brake disc skimming on the vehicle trues the disc to the hub, which can stop annoying pedal pulsations, juddering and brake squeal.

High performance vehicles have expensive brake discs  (sometimes called rotors), during hard driving conditions such as trackdays the discs expierence greater thermal stress.  The repeated heat cycles of track use can lead to the discs distorting. Commonly known as ‘warping’.

Warped discs are only one cause of pedal pulsation and brake judder.

We can eliminate pedal pulsation, brake judder and improve braking performance of your vehicle –  whilst saving you money.

As long as the discs are above the manufactuers minimum thickness we can skim them on the vehicle instead of replacing the discs saving you £££’s.

Why we will nor skim  a brake disc below the minimum thickness
A brake disc is subjected to both compressive and centrifugal forces,

The strength of a disc decreases as it wears. If the forces exerted on the disc exceed the material’s resilient limit, it will lead to deformation, cracks appearing and warping. Therefore it is crucial to replace brake discs  below the minimum thickness.

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Some More Important Facts…

The brake disc skimming process works on all types of metal discs. Including solid, vented, drilled, grooved, front and rear,

Gotboost can skim the discs on vehicles up to 3.5 tonnes.

Brake pedal pulsation can also be as a result of uneven wear of brake discs. This is caused by very slight mis-alignment of the discs and/or the vehicle hubs, known technically as “run-out”. The Pro-Cut lathe overcomes this problem by machining the disc directly on the vehicle.

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Poor fitting  & Hub Run-Out

Installation issues or hub run-out cause what is known as DTV.  (Disc thickness variation). DTV develops in a car 1000-4000 miles after new discs are fitted. Caused by runout built in to the hub assembly or due to incorrect alignment of the disc during install.

 You can replace the brake disc as many times as you like trying to solve the vibration and yes, the problem will go away for a few thousand miles only to return.

DTV occurs when the disc has worn unevenly, causing the two friction surfaces of the disc to no longer be parallel with each other. This is often confused with disc warping. Warping is defined as distortion, where the disc is a uniform thickness in width.

Correct diagnosis is vital to prevent the condition returning after 1000-4000 miles.

On vehicle brake skimming of the rotor surface will  result in more effective brakes and ZERO vibration. Gotboost recomends that you have all four brakes skimmed  on the vehicle when fitting new rotors especially on high performance or track day vehicles.