Why do my brakes shudder?

Hot brakes! Boil a kettle in 2 secs.!

What help would you like?

 It can be caused through worn suspension, loose wheel bearings or a bent axle but the most common reason is an uneven surface on the disc rotors. This is the rotating item (about the size of a dinner plate, visible through the spokes of the wheel) that is squeezed by the brake pads when the vehicle is braking. There is a lot of heat generated and if the rotor is worn unevenly parts of the surface heat up more than others, causing high spots (localised metalurgical changes). Consequently, the brake pads start vibrating and that motion is transferred to the whole front end. The shaking can be quite violent when going down a long steep hill under brakes and will eventually cause wear in steering and suspension components.

When the rotors become too thin they become permanently distorted so that even when braking gently the driver will feel a pulsation through the brake pedal to his foot.

If you are experiencing these symptoms you will need to visit your favourite Repairer. He will measure the thickness of the rotors and, if they are still above the allowable minimum, he will machine them straight again. If they are too thin, he will replace them. He will also take this opportunity to inspect the brake caliper, pad and fluid condition to ensure your safety.

 Happy motoring.

Like more help? …….. visit www.jackmans.com.au

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