911 Targa 4S (997) F6-3.8L (2007)
Outer wear areas
Central wear area
-
Measuring brake disc thickness
Information
Unlike smooth brake discs, on which the minimum thickness is measured in the middle of the disc, the minimum thickness of perforated (cross drilled)
brake discs must always be measured on the inner and outer friction surface track that is most worn -arrows-.
-A- Central wear area
-B- Outer and inner wear area
Wear areas A and B
Measure the brake disc thickness -X- in the area of the outer or inner friction surface track -arrows-, at a minimum of 3 different points ( -A, B, C-)
offset by 120°.