Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Audi >> 2021 >> TT Quattro S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 43 (General, Technical Data (Brake System) [Roadster]) >> 00 General, Technical Data >> Ceramic Brake Rotor, Checking >> Ceramic Brake Rotors, Visual Characteristics

Ceramic Brake Rotors, Visual Characteristics

WARNING: This page is about a different variant/trim than selected.
NOTE:

On this model ceramic brakes are only installed in the front.

Fig 1: Identifying Ceramic Brake Disc
GWWA00-10355Courtesy of AUDI OF AMERICA, LLC
  1. Cooling Duct
  2. Friction Surface
  3. Base Material

Checking the Connection Area on the Brake Rotor Ring and Brake Rotor Cup:

WARNING:

The brake rotor ring and the brake rotor cup are attached to each other and must never be separated. Never loosen the threaded connection on the brake rotor cup.

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

Fig 2: Identifying Stress Cracks In Ceramic Brake Disc
GWWA00-10354Courtesy of AUDI OF AMERICA, LLC
NOTE:

Stress cracks do not mean the ceramic brake rotor is faulty.

The stress cracks are somewhat visible and can be different from each other in strength.