Why is there a hissing sound when braking slowly?
1 Answers
Slow braking with a hissing sound is due to malfunctions in the caliper, brake disc, or brake pads. Here are the details: 1. Poor caliper reset can cause prolonged friction between the disc and pad, resulting in abnormal noise. 2. If there are foreign objects inside the brake pads or if the brake pads are too hard (containing too much metal), abnormal noise may also occur. 3. A common reason for the hissing sound during braking is thinning brake pads, causing direct contact between the brake drum and the vehicle, leading to metal-on-metal friction and noise. 4. If the brake pads are installed incorrectly or the wrong model is used, abnormal noise may also occur. The brake pads should be reinstalled, and it is recommended to have them installed at a professional auto repair shop.