What Causes Abnormal Noise in the Rear Wheels When Braking?

[CarlosFitz]

Abnormal noise in the rear wheels when braking may be caused by the following reasons: Break-in period for new cars: New cars or newly replaced brake pads have a break-in period, during which some abnormal noise may occur. Typically, the noise will disappear after the car has been driven for a few hundred kilometers. Normal ABS activation: The ABS system operates in a cycle of locking and releasing the brakes, keeping the vehicle in a state of near-lock rolling. When the ABS is activated by hard braking, it may produce a clicking sound, which is normal. In this case, simply press the brake pedal firmly to the floor. Severely worn brake pads: Worn-out brake pads can also cause abnormal braking noise. Most brake pads have wear indicators that will make a sharp noise when the pads are worn to their limit, signaling the need for immediate replacement to avoid accidents. Foreign objects between the brake discs: Small stones or a water film between the brake disc and pad can cause abnormal noise. This can often be resolved by pressing the brake pedal a few more times or removing the small stones.