Coating On The Pccb Brake Discs (Possible Causes)

WARNING: This page is about a different car, the 2021 Porsche Macan, 2020 Porsche Macan, and 2019 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.

The coating on the PCCB brake discs arises as a result of a high load and high temperatures, for example on a racing circuit. Check the following in such cases:

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Bores (perforations) in brake disc friction surface (shown as an example)

Ventilation (brake cooling): all components are present, secured correctly and undamaged.
Brake pad quality: Use the appropriate brake pads if the vehicle is being used on a racing circuit.
The perforation bores -see figure- in the brake discs must not be blocked.
If there is a coating on the pads, the brake discs can still be used provided the wear criteria of the brake discs are OK.