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

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2008 BMW 335xi, 2008 BMW 335i, 2008 BMW 328xi, 2008 BMW 328i, and 2008 BMW 323i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

34 1 280

Necessary preliminary tasks:

Remove Wheels
Remove and clean Brake Pads

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.

New brake pads may only be installed if the brake disc thickness is greater than or equal to the Minimum Brake Disc Thickness (MIN TH).

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

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

Fig 1: Identifying Special Tool (34 1 280) And Brake Disc Measuring Points

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1), remove brake caliper (2) with brake console (3) and tie back.

Installation:

For tightening torque refer to 34 11 2AZ in 34 11 FRONT BRAKE .

Brake hose remains connected.

Check that brake hose is correctly seated in holder.

Fig 2: Identifying Brake Caliper, Screws And Brake Console

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) and remove brake disc (2).

Installation:

Replace screw.

For tightening torque refer to 34 11 1AZ in 34 11 FRONT BRAKE .

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!

Fig 3: Identifying Brake Disc And Screw

Courtesy of BMW OF NORTH AMERICA, INC.