Brake Judder (Brake Vibration)

It is usually caused by uneven disc thickness, often called a warped disc. It often appears after hard braking or after the car is parked with hot brakes applied. It is usually more noticeable when braking from high speed. Measuring disc thickness at several points confirms the cause.

Variations in disc thickness make the pads grip unevenly as the disc turns, creating a pulsing force.

Replace discs and pads together on both sides of the axle. Clean rust from the hub face before fitting new discs to avoid runout.