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

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. 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

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 .

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: Positioning Special Tool (34 1 280) At Three Measuring Points

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 (MIN TH).

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

Installation:

Tightening torque 34 11 2AZ .

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!

Fig 3: Identifying Brake Disc Screws

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

Replace screw.

Tightening torque 34 11 1AZ .

After installation:

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