What Causes the Squeaking Sound When Releasing the Brake?
2 Answers
Brake squeaking when releasing can be caused by the following reasons: New car break-in: The break-in of brake pads is an important part, and it usually takes a few hundred kilometers of driving before the brakes feel smoother. Presence of sand particles: Tiny sand particles can get between the brake pads and rotors while driving, sometimes causing noise due to friction. This usually doesn't require repair, as the particles will fall out after some driving. Damaged screws: Missing or damaged screws on the brake rotor can also cause brake noise. System malfunction: If there's a fault in the brake system, it needs to be checked and repaired.
That squeaking noise when you apply the brakes can indeed be quite annoying. I remember my car doing the same after a rainy winter season, sounding like it was protesting. This is mostly because the brake pads have worn too thin, allowing that friction sound to emerge. Especially after prolonged parking or in damp conditions, rust buildup on the rotors can cause them to stick, resulting in that creaking noise when released. Another possibility is that the caliper lubricant has dried up, causing components to stick and produce noise. I recommend checking the brake pad thickness first—if it's below 3mm, it's time for a replacement. Additionally, regularly cleaning dust and rust off the brake rotors can prevent many such noises. Don’t delay, as it could affect braking performance and compromise driving safety.
