What Causes the Squeaking Sound in New Car Brakes?
2 Answers
New car brakes may squeak because the brake pads and discs are new and need to wear in. During this period, the brakes may produce unusual noises, but these will disappear after a few hundred kilometers of driving. In the initial usage phase, the brake discs and pads have not yet fully matched, so during sudden or heavy braking, the brake discs may emit sharp squeaking sounds. This is actually an occasional occurrence and does not affect braking performance. With patient break-in over time, the situation will improve. Brake discs play a crucial role in the braking system. As wear components, brake discs typically need to be replaced along with the brake pads after two sets of pad replacements. Due to differences in manufacturing costs and performance orientations among different car models, the wear rate of brake discs also varies.
I just bought a new car recently, and within less than a week of driving, I noticed a squeaking sound when braking, which is quite annoying. At first, I thought it was a major issue, but after asking a friend, he said it's common with new cars. It's due to the new brake discs and pads having a protective coating or small metal particles on the surface, which require a break-in period. He suggested gently applying the brakes a few times in an open area while driving to heat them up, and sometimes the noise reduces significantly. If the noise persists loudly or is accompanied by vibrations, it might be due to improper installation or foreign objects stuck in the brakes, and I should immediately take it to the 4S shop for inspection. It's normal for new cars to have a break-in period, but safety shouldn't be overlooked. Regularly check the brake wear to avoid affecting braking performance. This process usually quiets down after a few hundred kilometers, so there's no need to rush.
