Necessary preliminary tasks:
Unscrew bolts (1) and remove brake guard plate (2).
Installation note: Replace screws.
Remove retaining plate (2) in direction of arrow.
Feed out brake guard plate (3) over wheel hub.
BMW X3 Service & Repair Manual > Front brakes: Precision-turning both front brake discs on both sides
IMPORTANT:
Always precision-turn both sides of both brake discs on one axle.
Maximum machining dimension per friction ring side is 0.8 mm!
Observe MINIMUM BRAKE DISC THICKNESS (MIN TH).
Brake discs of M models (Compound brake discs) must not be machined!
Only one brake pad set may b ...