PCCB Brake Disc Wear Appearance

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2019 Porsche 911, 2018 Porsche 911, 2017 Porsche 911, 2016 Porsche 911, and 2015 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

Friction surfaces after normal brake load while driving on roads. No surface fractures present -
Brake discs do not need to be replaced!

Fig 1: Identifying Brake Disc Friction Surface Bores (Perforations)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Friction surfaces after a long journey and occasional high load. Isolated cases of connected surface fractures less than 1.2 cm²-arrow- .
No replacement necessary as the connected surface fractures are < 1 cm² !

Fig 2: Locating PCCB Surface Fractures
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
End of service life of friction surface or after highest load on a racing circuit.
Replace brake discs if the connected friction surface damage is > 1 cm²-arrow- . To do this, follow the instructions provided under → 465102 CHECKING FRONT PCCB BRAKE DISC (WEAR ASSESSMENT) .

Fig 3: Locating PCCB Friction Surface Damage Area
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The best way to detect a surface fracture is by checking the wear indicators. Based on the wear indicators, this means that at least one wear indicator -arrow- must have a surface fracture of > 50 % (damage > 1 cm² /entire surface of a wear indicator with a surface area of approx. 1.2 cm² ).

Fig 4: Locating PCCB Surface Burnout On Wear Indicator
Courtesy of PORSCHE CARS NORTH AMERICA, INC.