Test Values And Wear Limits For PCCB Brake System
WARNING: This page is about a different car, the 2018 Porsche Macan and 2017 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
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) .
NOTE:
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.