Why Do Brake Pads Make Noise?
3 Answers
Reasons for brake pad noise: 1. Excessive wear of brake pads: When brake pads reach the warning line or are excessively worn, they often produce abnormal noises, mainly manifested as sharp metal friction sounds, accompanied by poor braking performance; 2. Hard brake pad material: Since most original brake pads are made of semi-metallic materials, friction between the pads can easily generate noise; 3. Foreign objects between brake pads: During driving, foreign objects such as sand or gravel may get lodged between the brake pads or discs, causing abnormal noises during braking; 4. Improper installation of the braking system: This is mainly related to the spacing between the brake pads and discs, as well as the tightness of the nuts.
I've encountered many brake squealing issues during car repairs. The most common cause is brake pads worn down to their limit, where the small metal tabs inside start scraping against the rotors, creating that screeching sound. Newly replaced pads that aren't properly secured may also cause unstable friction. Cold weather or rust formation on rotors after rain can produce similar squeaks. During inspection, just take a quick look at the pad thickness - if it's as thin as your fingernail, it's time for immediate replacement. Never compromise on driving safety; take it straight to professional mechanics who can use instruments to check rotor evenness and clean off any contaminants. Maintain your brake system every 20,000 km or so to prevent future issues. These noises shouldn't be ignored - brake failure could lead to severe consequences. Spending a bit on repairs ensures everyone's safety, which is priceless.
My old Honda has been squeaking when braking recently, especially noticeable in the mornings after startup. A friend suggested it might be due to worn-out brake pads or sand/dust on the rotors. At the auto shop, they confirmed the pads were dangerously thin. The mechanic also mentioned the pad material was poor quality and prone to noise, but the main issue was excessive wear. He advised driving with fewer sudden stops to extend pad life, applying lubricant during maintenance to keep the system clean, and addressing minor sounds promptly to prevent bigger issues. Proper handling saves fuel and ensures peace of mind – these small details truly matter for driving safety.
