Basic Information

Checking involves the following: 

1. Visual inspection for surface changes in the brake disc friction surfaces and wear indicators. Indication of wear: Connected surface fracture > 1 cm²-arrow-  , without adding up smaller fractures

   > 465402 Checking rear PCCB brake disc (wear assessment) - section on "CHECKING "

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Connected surface fracture

2. Check surface roughness (Rk) of brake discs (max. 80 μm permitted) since this affects braking comfort (noises), braking behavior/pedal pressure and brake-pad service life

   > 465402 Checking rear PCCB brake disc (wear assessment) - section on "CHECKING "

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Surface roughness of PCCB brake disc

3. Check brake discs for minimum thickness -X-  . The minimum brake disc thickness (e.g. Min. Th. 29.7 mm) is stamped on the brake-disc chamber

   > 465402 Checking rear PCCB brake disc (wear assessment) - section on "CHECKING "

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Minimum thickness -X- of PCCB brake disc

4. Check brake discs for edge damage -arrow-  (damage due to improper use)

   > 465402 Checking rear PCCB brake disc (wear assessment) - section on "CHECKING "

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Edge damage on PCCB brake disc