911 Carrera (997) F6-3.6L (2006)
PCCB surface roughness (Sr) = 108 micrometer
3.1.
Surface roughness (Sr) = 108 microns, as in the case of the previous disc, but with the remainder of the original friction surface -arrow-.
Replace brake discs! To do this, please observe the relevant information.
In general, the following applies: Brake discs must be replaced if the surface roughness (Sr) is > 80 microns!
PCCB brake disc
3.2.
Surface roughness (Sr) = 72 microns. Borderline disc, identified by the roughness, but also by the indication of wear and associated surface
fractures -arrows-, > 1 cm2.
Replace brake discs! To do this, please observe the relevant information.
Checking brake discs for minimum thickness
Information
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For perforated brake discs, the minimum thickness -X- must always be measured on the inner or outer friction surface track -arrows-.