What Causes the Squeaking Noise After Installing New Brake Pads?
2 Answers
After replacing brake pads, the squeaking noise is caused by the initial bedding-in process of the newly installed brake pads. Below are relevant explanations about brake pad noise: Brake pad maintenance guidelines: The first replacement is generally recommended at 60,000-70,000 kilometers. Some vehicles (typically high-end models) have warning lights to indicate when brake pad replacement is needed. Alternatively, when the friction material wears down to the metal indicator line on the brake pad, you'll hear a screeching sound, which means immediate replacement is required. Proper driving techniques: Always maintain full concentration and situational awareness. Anticipate problems early by easing off the accelerator to decelerate, and decide whether to apply brakes based on changing conditions. This approach not only saves fuel but also extends the service life of your brake pads.
When I first changed my brake pads, they squeaked like crazy and I was totally confused. Later I learned this is normal during the break-in period. New pads have a hard coating or rough particles on the surface, and uneven friction with the rotor causes noise when first installed - usually disappears after a few hundred kilometers of driving. But you should also check if installation was proper - like if the springs are too tight or misaligned, or if the rotor wasn't cleaned properly during installation (oil or metal debris contamination can cause noise). Material mismatch can also cause this, like if your new pads are too hard relative to the rotor surface. My advice: don't rush to replace them immediately. Try gentle braking for a while, like stop-and-go city driving. If they're still squeaking badly after a week, go back to the shop to check if the rotors are warped or worn - don't delay for safety reasons.
