General Information On PCCB Brake Discs

WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

The brake discs have wear indicator plates in the friction surfaces. The wear indicator plates (six on each brake disc) are arranged close to the outer diameter, offset by 120 ° -arrows- at three points. The three wear indicator plates on each friction surface (3 on the inside and 3 on the outside) are positioned directly opposite each other. Each wear indicator is approx. 2 cm² . The wear indicators are barely visible on new brake discs.

Fig 1: Locating Wear Indicators

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The minimum brake disc thickness (wear dimension) is stamped on the brake-disc chamber (e.g. Min. Th. 37.7 mm).