911 Carrera (997) F6-3.6L (2006)
all in racing conditions, cause a progressive material fatigue.
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Effects on driving: The surface change worsens the smoothness of braking, decreases the disc strength and increases the brake pad wear and
therefore makes a precautionary parts replacement necessary.
The following illustrations (PCCB brake disc wear appearance) are to be used for damage assessment.
PCCB brake disc wear appearance
1. Friction area surface after normal brake load in road use. No surface fractures.
PCCB brake discs without surface fractures
No replacement necessary!
2. Friction area surfaces after a long run and occasional higher load. Isolated surface fractures smaller than 1 cm2 -arrow-.
PCCB surface fractures
No replacement necessary as the associated surface fractures are < 1 cm2!
3. End of service life of friction area surface or after highest load on a racing circuit.
PCCB friction surface damage