Basic Information

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Checking involves the following tasks: Information

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".

Fig 1: Locating Brake Disc Surface Fracture
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
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".

Fig 2: Identifying Surface Roughness Of PCCB Brake Disc
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Check brake discs for minimum thickness -X- . The minimum thickness of the brake disc (example: Min. Th. 29.7 mm) is stamped on the brake disc hub → 465402 CHECKING REAR PCCB BRAKE DISC (WEAR ASSESSMENT) - section on "Checking".

Fig 3: Identifying Minimum Thickness Of PCCB Brake Disc
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Check brake discs for edge damage -arrow- (damage due to improper use) → 465402 CHECKING REAR PCCB BRAKE DISC (WEAR ASSESSMENT) - section on "Checking".

Fig 4: Identifying PCCB Brake Disc Edge Damage
Courtesy of PORSCHE CARS NORTH AMERICA, INC.