3411220 Removing and installing or replacing both front brake discs

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 335xi, and 2010 BMW 335i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks

Remove WHEELS .
Remove and clean 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 FRONT BRAKE .

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: Checking Minimum Brake Disc Thickness Using Special Tool (34 1 280)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: New brake pads may only be fitted if the brake disc thickness is greater than the minimum brake disc thickness, see FRONT BRAKE (MIN TH).

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

Installation:

Tightening torque 34 11 FRONT BRAKE .

Check that brake hose is correctly seated in holder.

Fig 2: Identifying Brake Caliper And Brake Console With Mounting Screws

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!

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

Installation:

Replace screw.

Tightening torque 34 11 FRONT BRAKE .

Fig 3: Identifying Brake Disc With Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

After installation

Read and comply with notes on BRAKING IN NEW BRAKE DISCS/BRAKE PADS .