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

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. 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 wheels
If necessary, remove and clean brake linings

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

Observe safety instructions on raising the vehicle. See 00...... LIFTING VEHICLE WITH A LIFTING PLATFORM .

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 .

New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH).

Always replace brake discs in pairs.

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

Fig 1: Positioning Special Tool (34 1 280)

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1), remove brake caliper and tie up.

Installation:

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

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!

Fig 2: Identifying Brake Caliper And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew bolts and take off brake disc.

Installation:

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

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

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.

Fig 3: Identifying Brake Disc Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Internally ventilated brake discs are balanced.
Never remove or reposition balance clips.

Fig 4: Locating Reposition Balance Clips

Courtesy of BMW OF NORTH AMERICA, INC.