34 11 220 Removing and installing or replacing both front brake discs

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

34 1 280

See BRAKES - SPECIAL TOOLS .

Necessary preliminary tasks:

Remove front wheels
Remove and clean brake pads

NOTE: After completing work, read and comply with notes on braking in new brake discs / brake pads .

Check minimum brake disc thickness:

Position special tool 34 1 280 at three measuring points in area (1) and measure.
Compare measurement result and lowest value with setpoint value . See BRAKES - TECHNICAL DATA .

Installation:

New brake pads may only be fitted if the brake disc thickness is greater than the minimum brake disc thickness (MIN TH). See BRAKES - TECHNICAL DATA .

If the brake discs are replaced, you must also fit new brake pads.

Fig 1: Checking Brake Disc Thickness

Courtesy of BMW OF NORTH AMERICA, INC.

Brake discs may only be replaced in pairs (on each axle).

Release screws (1) and remove brake carrier (2).

Installation:

Tightening torque 34 11 2AZ . See 34 11 FRONT BRAKE .

Fig 2: Identifying Screws And Brake Carrier

Courtesy of BMW OF NORTH AMERICA, INC.

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.
Clean contact surface of brake disc at wheel hub thoroughly and remove traces of corrosion.
Unevenness on contact surface may result in distortion of brake disc!

IMPORTANT: Brake discs must not be mixed up (directional ventilation).

Release screws (1) and remove brake disc.

Installation:

Brake disc must be correctly seated on guide pins (2).

Replace screw.

Tightening torque 34 11 1AZ . See 34 11 FRONT BRAKE .

Fig 3: Identifying Screws And Guide Pins

Courtesy of BMW OF NORTH AMERICA, INC.