34 21 320 Removing And Installing Or Replacing Both Rear Brake Discs (S85)
WARNING: This page is about a different car, the 2010 BMW M5, 2009 BMW M5, 2008 BMW M5, 2007 BMW M5, and 2006 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
- Remove wheels.
- If necessary, remove and clean brake pads .
After completing work:
- Adjust handbrake .
- Read and comply with notes on breaking in new brake discs / brake pads .
IMPORTANT:
If the thickness of the brake discs drops below the minimum brake disc thickness (MIN TH), then the brake discs must be replaced.
Always replace brake discs in pairs.
If the brake discs are replaced, you must also fit new brake pads.
The brake discs of M models are tied to the direction of travel:
The uneven part number denotes the left brake disc, the even part number the right brake disc!
Always replace brake discs in pairs.
If the brake discs are replaced, you must also fit new brake pads.
The brake discs of M models are tied to the direction of travel:
The uneven part number denotes the left brake disc, the even part number the right brake disc!
Release screws (1), remove brake caliper and tie up.
NOTE:
Brake hose remains connected.
Installation:
Tightening torque 34 21 3AZ .
Release screws (1) and remove brake disc (2).
IMPORTANT:
To release brake disc: Do not under any circumstances strike friction ring with a hammer or similar! If necessary, carefully tap on base of brake disc chamber with a rubber mallet.
Installation:
Make sure contact surfaces between wheel hub and brake disc are absolutely clean.
Replace screws.
Tighten to specified torque 34 21 1AZ .