Why does the brake make a creaking sound when released?
2 Answers
The reasons for the creaking sound when releasing the brake: 1. False fault: When slowly releasing the brake pedal, the engine already has enough power to drive the car forward, but the brake is not fully released. The moving wheels are held back by the brake system, naturally causing abnormal noise. 2. Real fault: The brake disc and brake pads stick together due to rust, causing abnormal noise. Nowadays, many brake pads are made of semi-metallic materials, containing a large number of metal fibers. Sometimes metal particles form, producing a harsh sound when pressing or releasing the brake. This situation usually disappears after driving for a while. If it persists, it may be due to poor manufacturing quality. It is recommended that the owner replace the brake pads in time to avoid scratching the brake disc.
A couple of days ago, I was driving and heard a loud creaking noise when I released the brake, which startled me. This usually happens during significant weather changes, like on rainy or cold days, when the brake disc surface rusts. The brake pads then rub against the rusty part when releasing the brake, causing that noise. Normally, it's not a big issue, but if it keeps happening, it's not good. Once, I ignored it, and my braking efficiency dropped—I almost rear-ended someone. I recommend paying attention to it regularly. After parking, don’t pull the handbrake too tight to prevent further rusting. Check the brake pad thickness and brake disc flatness every six months. Replacing them early when you notice wear saves money and ensures safety. Also, when parking on a slope, try to reduce brake pressure to avoid loosening components and causing extra noise. In short, don’t take it lightly—a basic inspection at a repair shop usually costs just a few bucks.
