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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> General, Technical Data (Brakes) (Cabriolet) >> 00 General, Technical Data >> Brakes Inspection >> Visual Characteristics Of Ceramic Brake Rotors

Visual Characteristics Of Ceramic Brake Rotors

NOTE:

Ceramic brakes only installed in the front

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