What Causes the Abnormal Noise When Braking in a BMW 3 Series?

1 Answers
SimonAnn
07/29/25 4:58pm
BMW 3 Series experiencing abnormal noise when braking can be attributed to the following reasons: 1. Reason one: Excessive wear of brake pads. According to the working principle of brake pads, friction is inevitable during operation, leading to wear. When the wear reaches a certain level, the brake pads will lose their braking function. 2. Reason two: Abnormal noise from the suspension system or pressure bearings. Such noises are usually caused by hardened rubber strips on the components, which produce noise when encountering resistance during braking. If the rubber strips have aged, they should be replaced. If the hardening is merely due to cold weather, no action is needed. 3. Reason three: Wear or deformation of the brake disc. Similar to brake pads, due to frictional wear during use, excessive wear or deformation can lead to abnormal noise when braking.
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