Visual Characteristics Of Ceramic Brake Rotors

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Ceramic brakes only installed in the front

Fig 1: Identifying Ceramic Brake Disc

Courtesy of AUDI OF AMERICA, LLC

Cooling Channels
Friction Surface
Base Material

Checking threaded connectors 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 connector on the brake rotor cup.

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

Fig 2: Identifying Stress Cracks In Ceramic Brake Disc

Courtesy 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.