What Causes the Squeaking Noise When Braking?

[McSophie]

Car brakes squeaking when pressed can be caused by: 1. Use of low-quality or overly hard brake pads. If inferior or excessively hard brake pads are used, they can produce a squeaking noise when rubbing against the brake disc during braking. 2. Presence of sand or foreign objects between the brake pads and brake disc. While driving, it's common to encounter complex road conditions. Due to the unique design of disc brakes, sand and foreign objects can get lodged between the brake pads and brake disc, leading to unusual noises when braking. 3. Severe wear of the brake disc. Using low-quality brake pads or having hard foreign objects between the brake pads and brake disc can cause abnormal wear on the brake disc. 4. Brake pad warning. Some brake pads come with electronic warning systems, while lower-end vehicles may use warning strips. If the brake pads wear down to the warning line, they will emit a squeaking alert sound.