34 11 220 Removing And Installing/Replacing Both Front 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, 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.
Brake discs may only be replaced in pairs (on each axle).
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!

Unfasten screws (1), remove brake caliper and fasten up.

NOTE: Brake hose remains connected.
If the brake hose was pulled from the mounting fixture during removal, make sure it is positively attached when installed!

Installation:

Tighten to specified torque. See 34 11 2AZ .

Fig 1: Identifying Unfasten Screws

Courtesy of BMW OF NORTH AMERICA, INC.

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:

Thoroughly clean contact surface of brake disc on wheel hub and guide pins (3), remove traces of corrosion if necessary.

Brake disc can only be mounted in one position.

Fig 2: Identifying Brake Disc, Guide Pins And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Replace screws.

Tighten to specified torque. See 34 11 1AZ .