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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Brakes - Repair) >> Troubleshooting >> Symptom I: Brakes Squeal Or Rattle

Symptom I: Brakes Squeal Or Rattle

WARNING: This page does not describe the selected car, but rather 92 other vehicles, including the 2002 BMW Z3, 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW Z3, and 2001 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM I: BRAKES SQUEAL OR RATTLE

Cause Solution
Wrong Type Of Pads Replace Brake Pads
Dirty Floating Caliper Recesses Remove & Install Clean Floating Calipers
Spring Force Insufficient Replace Spring
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
Pad Wear Excessive Or One-Sided Replace Brake Pads
Rust Edges On Brake Discs Grind Or Replace Brake Discs
Pad Loose Replace Brake Pads
Wheel Bearing Play Excessive Replace Wheel Bearings