Why is there a clunking sound when braking?

[LeCooper]

The reasons for a clunking sound when braking include: engine RPM issues, possible rust on the brake discs or brake pads, excessive wear of the brake discs and brake pads, or assembly problems. Both brake discs and brake pads are high-wear components, as they undergo friction with each brake application, leading to natural wear over time. When the wear becomes excessive, abnormal noises may occur, necessitating regular inspection and replacement. Typically, brake pads should be replaced every 60,000 to 80,000 kilometers, while brake discs should be replaced every 100,000 to 120,000 kilometers. Brake noise is a troublesome issue that can arise at any time, whether in a new car or a vehicle that has traveled tens of thousands or even hundreds of thousands of kilometers.