PCCB Brake Disc Wear Appearance

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

Friction area surface after normal brake load in road use. No surface fractures.
No replacement necessary!

Fig 1: Identifying PCCB Brake Discs Without Surface Fractures
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Friction area surfaces after a long run and occasional higher load. Isolated surface fractures smaller than 1 cm²-arrow- .
No replacement necessary as the associated surface fractures are < 1 cm² !

Fig 2: Locating PCCB Surface Fractures
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
End of service life of friction area 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, please observe the relevant information → Replacing brake discs (notes/decision-making aid) .

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 > 85 % (damage > 1 cm² /entire surface of a wear indicator with a surface area of approx. 1.2 cm² ).

Fig 3: Identifying PCCB Friction Surface Damage and Wear Indicator
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Friction area surface after normal brake load in road use. No surface fractures.
No replacement necessary!

Fig 1: Identifying PCCB Brake Discs Without Surface Fractures
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Friction area surfaces after a long run and occasional higher load. Isolated surface fractures smaller than 1 cm²-arrow- .
No replacement necessary as the associated surface fractures are < 1 cm² !

Fig 2: Locating PCCB Surface Fractures
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
End of service life of friction area 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, please observe the relevant information → Replacing brake discs (notes/decision-making aid) .

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 > 85 % (damage > 1 cm² /entire surface of a wear indicator with a surface area of approx. 1.2 cm² ).

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