Test Values/Wear Limits
WARNING: This page is about a different car, the 2024 Porsche 911, 2023 Porsche 911, and 2022 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
Information
Depending on the wear of grey cast-iron brake discs, two condition criteria can make replacement necessary:
- Formation of cracks at advanced stage on the brake disc friction surfaces.
- Brake disc minimum thickness is not retained due to wear (material erosion due to friction).
> 465002 CHECKING FRONT BRAKE DISCS
| Location | Description | Type | Basic value | Tolerance |
|---|---|---|---|---|
| Pad thickness, front | Measured value | 10.4 mm | ||
| Pad thickness, rear | Measured value | 9.5 mm | ||
| Brake disc wear dimension, front | Measured value | 32 mm | ||
| Brake disc wear dimension, rear | Measured value | 26 mm | ||
| Lateral runout of brake disc, maximum | Measured value | 0.03 mm | ||
| Lateral runout of wheel hub, maximum | Measured value | 0.03 mm | ||
| Lateral runout of brake disc when installed, maximum | Measured value | 0.06 mm |