Contents: Stages of work ↳ Brake disc sizes ↳
Support the vehicle securely and remove the wheels from the relevant axle: use this opportunity to also check the brake linings.
Stages of work
A slightly bluish coloration of the disc is completely normal.
Pay attention to deep grooves on the disc. They are caused by dirt, hardened or heavily worn pads. Marks up to 3 mm deep are not a cause for concern. Otherwise, dismantle the pads and remove any foreign bodies (e.g. gravel, rust particles) embedded in the pad material.
The best way to measure the thickness of the discs is with a caliper and two coins. Place one coin on each side of the disc between the template and the brake disc. Of course, the measured value should be reduced by the thickness of the coins.
Count and subtract: To calculate the correct value, after measuring, you need to subtract the thickness of both coins.
Discs worn down to a thickness greater than the minimum permitted must be replaced. You can have discs with nicks ground (in a workshop). Always replace and ground brake discs in pairs.
Brake disc sizes
Front axle
| Disc diameter | mm | 258 |
| Disc thickness (new) | mm | 22 |
| Wear limit | mm | 20 |
| Max, beating | mm | 0,05 |
Rear axle
| Disc diameter | mm | 252,7 |
| Disc thickness (new) | mm | 10,0 |
| Minimum thickness | mm | 8,0 |
| Max, beating | mm | 0,05 |