General Information On PCCB Brake Discs

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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 PCCB Brake Discs 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. 29.7 mm).