What Causes Squeaking After Replacing Brake Pads?
4 Answers
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.
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.
As an experienced driver with years of driving under my belt, I've encountered quite a few instances of squeaky brake pads after replacement. The main reason is usually that new pads are made of harder material and need time to adapt to the contours of the old rotors. This kind of noise during the break-in period typically disappears after a few days. If the pads aren't securely fixed during installation, loose pads can cause abnormal noises, which is why choosing a reputable repair shop is crucial. Another often overlooked point is uneven wear on the brake rotors themselves - new pads may not match well with worn rotors, leading to noise. It's recommended to test drive at low speeds after every pad replacement to ensure everything is normal before regular use. Following this practice long-term can save money and avoid return visits for repairs.
I just had my brake pads replaced and heard a squeaking noise, which scared me into thinking something was seriously wrong. After asking a friend, I learned that new pads often make this noise initially because their surfaces aren't smooth yet, and the sound will go away after driving for a while. It could also be due to uneven installation or dust contamination during pad replacement, in which case some lubrication might solve the problem. If the noise persists, then check if the brake discs need replacement—don't delay as it could affect safety. In short, try simple solutions first, and if they don't work, then proceed with repairs.
