Brake system > Technical data > Brakes Brakes
The PR numbers are listed in the following tables. They indicate the required combination of brake calipers, discs and brake pads.
Brake system Diagonally split dual-circuit braking system with ABS, EBPD, EDL, ASR, ESP, ECD and vacuum pump
Front brakes Factory code (PR No.) 1LT 1LA 1LJ Brake caliper FN3 (16") FBC (16") FBC (17") Ventilated brake disc Ø mm 314 320 345 Brake disc, thickness mm 25 30 30 Brake disc, wear limit mm 23 28 28 Brake pad thickness (including backplate and damper plate) mm 20.3 20.3 20.3 Brake pad wear limit (including backplate and damper plate) mm 10 10 10
Rear brakes Factory code (PR No.) 1KW 1KE Brake caliper CII-43 EPB (16”) CII-43 EPB (17”) Brake disc Ø mm 300 330 Brake disc (not ventilated), thickness mm 12 ------ Brake disc (ventilated), thickness ------ 22 Brake disc, wear limit mm 10 20 Brake caliper, piston Ø mm 43 43 Brake pad thickness (including backplate and damper plate) mm 17.5 17.5 Brake pad wear limit (including backplate and damper plate) mm 7 7
The type of brake system installed in the vehicle is indicated by the corresponding PR number -A and B- on the vehicle data sticker.
When performing repair work on brakes, hairline cracks are often found on the friction surface of the brake discs. Hairline cracks up to a length of 10 mm do not present a technical problem and do not justify a renewal of brake discs.
Brake discs and pads with cracks going all the way across the friction surface must be renewed.
Brake system > Technical data > Brakes