Nicks On Ceramic Brake Rotor

If the ceramic brake rotor starts to show material break down on the friction surface greater than 1cm² , -arrow- then the ceramic brake rotors must be replaced.

Fig 1: Identifying Nicks Or Material Break Down On Friction Surface

Courtesy of AUDI OF AMERICA, LLC

Replace The Brake Rotors On Both Sides Of The Axle When: 

• the brake rotors must be replaced because they are worn,
• the replacement brake rotor has been technically modified, which can be determined by the revised part number.

Brake pads likewise must always be replaced on both sides of the axle.