Brakes - Rattle Noise From The Front Wheel Area
SI B 34 10 08Brakes
November 2008
Technical Service
SUBJECT
Rattle Noise from Front Wheel Area
MODEL
E90, E92, E93 (M3) with option code 2MD-M Driver produced up to 6/12/08
SITUATION
The customer may report a clicking noise or metallic-type rattle, which comes from the front wheel area while driving over bumps and/or rough road surfaces.
CAUSE
Extended periods of high speed driving, combined with high air turbulence, may cause excessive movement of the brake dust backing plates. This excessive movement may result in the formation of small cracks in the area of the lowering mounting bolt of the brake dust backing plates.
CORRECTION
In the event of a customer complaint, inspect the backing plates (2) at both front swivel bearings for the presence of cracks at the lower mounting point.
If either of the backing plates is cracked, both backing plates must be replaced.
Please note: the original equipment backing plates are silver in color, and the improved backing plates will be black.
Refer to Repair Instruction RA 34 11 250 "Removing and installing/ replacing a brake carrier/ brake guard plate at front".
PARTS INFORMATION
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
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