Test values and wear limits for PCCB brake system
WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
Information
The following condition criteria can make replacement necessary depending on the wear of the PCCB brake discs:
- Surface changes in the brake disc friction surfaces at an advanced stage .
- Minimum brake disc thickness is not retained due to wear (material erosion due to friction) .
Information
The PCCB brake disc must not be machined.
| Location | Description | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Pad thickness, front | Wear limit 2 mm | approx. 8.8 mm | |||
| Pad thickness, rear | Wear limit 2 mm | approx. 11.3 mm | |||
| Lateral runout of brake disc, max. | New | 0.025 mm | |||
| Lateral runout of wheel hub, max. | New | 0.02 mm | |||
| Lateral runout of brake disc when installed, max. | New | 0.07 mm |
Possible complaints
- Brake disc becomes distorted as a result of serious driving.
- Too much lateral runout when new brake discs are fitted on dirty or distorted wheel hubs.
Procedure
- Check brake disc for cracks, lateral runout, thickness tolerance, flatness and surface roughness.