Visual Characteristics Of Ceramic Brake Rotors

Identifications on the Ceramic Brake Rotor on the Brake Rotor Cup

Fig 1: Identifying Ceramic Brake Rotor Data

Courtesy of AUDI OF AMERICA, LLC

1. Running Direction
2. Brake Rotor Date of Manufacture
   • Example
3. Brake Rotor Minimum Thickness
   • Example
   • For the correct wear limit, refer to BRAKE ROTOR, WEIGHING .
4. Minimum Weight of the Brake Rotor and Cup
   • Example
5. Supplier
   • Example
6. On-Going Brake Rotor Production Number
   • Example
7. Audi-Part Number
   • Example

Fig 2: Identifying Ceramic Brake Disc

Courtesy of AUDI OF AMERICA, LLC

1. Cooling channels
2. Friction surface
3. Base material

The friction surface on a new brake rotor already has stress cracks made during the production process. These stress cracks are all different.

Fig 3: Identifying Stress Cracks In Ceramic Brake Disc

Courtesy of AUDI OF AMERICA, LLC

-- Checking threaded connectors on the brake rotor ring and brake disc cup, refer to CRACKS IN CERAMIC BRAKE ROTOR CONNECTION AREA .