Brake Disc Skimming

Brake disc skimming will stop brake pedal juddering, squeaks, and squeals as it trues the brake disc to the hub.

High-performance vehicles have expensive brake discs (sometimes called rotors), during hard driving conditions such as track days, the discs experience 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.

At GotBoost Racing we can eliminate brake judder and improve the braking performance of your vehicle – whilst saving you money. As long as the discs are above the manufacturer’s minimum thickness, we can skim them on the vehicle instead of replacing the discs. We won’t skim a brake disc below the minimum thickness

A brake disc is subjected to both compressive and centrifugal forces and 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 when they’re below the minimum thickness.

Some more important facts about brake disc skimming at GotBoost Racing;

• The brake disc skimming process works on all types of metal discs. Including solid, vented, drilled, grooved, front and rear
• GotBoost Racing can skim the discs on vehicles up to 3.5 tonnes
• Brake pedal pulsation can also be a result of uneven wear of brake discs. This is caused by a very slight misalignment 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.

Poor-fitting & Hub Run-Out

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

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 from returning after 1000-4000 miles.

On-vehicle brake skimming of the rotor surface will result in more effective brakes and zero vibration. GotBoost Racing recommends that you have all four brakes skimmed on the vehicle when fitting new rotors, especially on high-performance or track day vehicles.

GotBoost Racing is a member of the IMI (Institute of the Motor Industry), and the only Revo supplier in South Wales. Our workshop on Village Farm Industrial Estate, in Pyle, Bridgend, is kitted out to the highest standards with state-of-the-art equipment and specialist tools.

To find out more about Brake Disc Skimming in Pyle, Bridgend, contact us online or call us directly on 01656 670741

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