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What Causes Squeaking After Replacing Brake Pads?

2 Answers

MaciDella

07/29/25 12:47am

The reasons for squeaking after replacing brake pads are: 1. The brake pads have reached the warning line or are worn to the limit; 2. The brake pad material is relatively hard; 3. Improper installation of the brake system. The operation of brakes mainly relies on friction, using the friction between brake pads and brake discs as well as tires and the ground to convert the kinetic energy of the moving vehicle into heat energy through friction, thereby stopping the car. A good and efficient braking system must provide stable, sufficient, and controllable braking force, with excellent hydraulic transmission and heat dissipation capabilities, to ensure that the force applied by the driver on the brake pedal is fully and effectively transmitted to the master cylinder and sub-cylinders, avoiding hydraulic failure and brake fade caused by high heat.

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DiFinn

08/12/25 4:58am

I recently experienced squeaking after changing my brake pads too. When I took it to the repair shop, the mechanic explained it was caused by the new brake pads not being properly broken in. He said new pads have slightly rough surfaces initially, which can create noise when rubbing against the rotors - this usually goes away after driving a few dozen kilometers. Additionally, misalignment during installation or improperly positioned calipers can cause the pads to stick and create noise, so this job should definitely be done by professionals. Another possibility is minor scratches on the rotors or dust residue - it's best to clean them thoroughly before installing new pads. I think this situation is quite common, but don't rush to replace parts immediately. Observe for a few days first - if the noise persists, then check whether it's a material issue or other potential problems.

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