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

   > 465102 CHECKING FRONT PCCB BRAKE DISCS (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

   > 465102 Checking front 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. 37.7 mm) is stamped on the brake-disc chamber

   > 465102 Checking front 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 - see picture-  (damage due to improper use)

   > 465102 Checking front PCCB brake disc (wear assessment) - section on "CHECKING "

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Edge damage on PCCB brake disc