Cracks In Ceramic Brake Rotor Connection Area

Fig 1: Ceramic Brake Disc, Cracks Near Threaded Connectors

Courtesy of AUDI OF AMERICA, LLC

Checking threaded connectors on the brake rotor ring and brake rotor cup:

If the ceramic brake rotor has cracks near the threaded connectors on the cup leading to the friction surface on the brake rotor -arrows-, then the brake rotors must be replaced.

Fig 2: Identifying Cracks Near Threaded Connectors On Cup Leading To Friction Surface

Courtesy of AUDI OF AMERICA, LLC

Crack in the threaded connection area not permitted

Fig 3: Identifying Cracks In Threaded Connection Areas

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.