Wheel brakes

Brake pads must be replaced when the warning threshold value of the brake pad wear indicator is exceeded. See FRONT BRAKE R57 or REAR BRAKE is reached.

Refer to TECHNICAL DATA .

Brake pads must always be replaced on both sides of any axle.

The friction surfaces of the brake pads must not come into contact with oils or greases. The brake pads must be replaced if they are fouled by such substances.

In the case of rotation-dependent brake pads, make sure the arrow marking points in the direction of rotation of the brake disc for when the vehicle is moving forward. Brake pads with left/right markings must be fitted on the relevant side of the vehicle.

One-sided angled areas on the brake pads must be located on the disc contact side of the brake caliper for when the vehicle is moving forward.

Brake discs must not be scored or cracked. See FRONT BRAKE R57 or REAR BRAKE , brake disc runout, parallelism and surface roughness of the friction surfaces must not exceed or drop below the permitted values.

Refer to TECHNICAL DATA .

Always strip preservative off new parts before installation. With the rear brake discs, also strip preservative off brake drum on parking brake.

Brake drums must not be scored or cracked. Furthermore, the maximum drum inside diameter, radial runout and surface roughness of the friction surfaces must not exceed or drop below the permitted values.

Refer to TECHNICAL DATA .

Always strip preservative off new parts before installation.

Only approved glycol-based assembly pastes may be used for repairs on brake calipers.

All moving parts on the brake caliper must move freely: note grease specifications.

Use only BMW-approved lubricants to grease brake caliper guides (refer to OPERATING FLUIDS ).