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Symptom L: Pulsating Effect On Brake Pedal

WARNING: This page does not describe the selected car, but rather 43 other vehicles, including the 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, and 2005 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM L: PULSATING EFFECT ON BRAKE PEDAL

Cause Solution
Wheel Bearing Play Excessive Replace Wheel Bearings
Brake Disc Not Aligned With Floating Caliper Check Floating Caliper Installation
Brake Disc Runout Check Brake Disc For Runout, Replace If Necessary
Excessive Thickness Deviation Within Braking Surface Measure Thickness Of Brake Disc, Grind Down Discs Or Replace