911 Carrera (997) F6-3.6L (2006)
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above all deeper, compared with the previous surface condition.
On the one hand, the more extensive roughness is noticeable (only when a comparison is made); on the other hand, however, like before,
"only" depressions are observed.
Replacement not yet necessary!
2. Worn brake discs:
2.1.
Surface roughness (Sr) = 108 microns -see illustration- (view 1)
PCCB surface roughness (Sr) = 108 micrometer (view 1)
PCCB surface roughness (Sr) = 108 micrometer (view 2)
Surface roughness (Sr) = 108 microns -see illustration- (view 2)
Worn surface. Advanced wear has led to a situation where only the remains of the original surface are left.
It is clear that the roughness is caused not only by depressions but also by bumps.
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!
3. Worn brake discs (special cases):
