Why is the brake sound screeching?

[LoganRose]

Screeching brake sounds may be caused by worn brake pads, foreign objects in the brake pads, or the break-in period of newly replaced brake pads. Worn brake pads: When a car has been used for many years or has high mileage, the brake pads may age and wear out, leading to abnormal noises. In this case, the brake pads should be replaced at a 4S shop. Foreign objects in the brake pads: If the car has traveled through muddy or bumpy roads, small stones or other debris may become lodged in the brake pads, causing friction and noise. This situation can be resolved by cleaning the brake pads. Break-in period of new brake pads: When new brake pads are installed, there may be some noise initially. This usually resolves after driving for a while to allow the pads to break in. If the noise persists after some time, it is advisable to visit a 4S shop or repair shop for professional inspection.

[VonRiley]

I've been driving for over thirty years, and every time I hear a screeching sound from the brakes, I take it seriously. The most common cause is worn brake pads, where the metal layer is exposed and makes that sharp noise when it contacts the brake disc—like nails on a chalkboard. In humid or rainy weather, rust on the brake discs can also cause this. Another issue is small debris like stones or sand getting stuck on the road; if not cleaned in time, the noise becomes more frequent. I remember once thinking the squeaking was no big deal, but then the braking performance dropped, and I almost rear-ended someone—it was terrifying. When driving daily, regularly check the brake pad thickness; replace them when they’re down to 3mm. While washing the car, clean the brake areas to prevent dust buildup. Switching to high-quality brake pads reduces noise significantly—safety first!

[JordanFitz]

That screeching brake noise is so annoying, especially during traffic jams when it sounds even worse! Since I started modifying cars, I've researched this issue—it could be due to the brake pad material. High metal content tends to cause squealing during friction. Another possibility is uneven brake rotors, which create strange noises when worn irregularly. New brake pads have a break-in period; some noise within the first few hundred kilometers is normal, so no need to panic. If the noise persists, check for any foreign objects stuck in the system, as dust or small stones in the gaps can amplify the sound. Another scenario is high humidity or cold winter temperatures, which make the metal more brittle and prone to noise. I recommend rinsing the wheel hubs during car washes or taking it directly to a repair shop to test the braking system. Don't let it ruin your driving mood or affect your car's performance.

[HaydenLynn]

When I first bought my used car, I heard a screeching sound from the brakes and thought the car was broken, which made me quite nervous. After asking a friend, I learned that it might be due to worn-out brake pads or debris stuck in the brakes. Slight noises can sometimes be normal, like when the brake discs are wet after washing the car, and they disappear after driving for a while. However, if the sound gets louder and is accompanied by other abnormalities, such as a soft brake pedal, don't delay—get it checked by a professional immediately. When it comes to safety, brake issues should never be ignored. I personally replace my brake pads regularly, usually every two years, to prevent small problems from turning into big ones.

[SanZachary]

Harsh brake noises are often caused by improper friction, which can stem from several reasons. Firstly, severely worn brake pads expose the metal layer, leading to direct contact with the brake disc and generating high-frequency noise. Secondly, environmental factors like moisture or low temperatures can harden the brake surfaces, altering the friction coefficient and producing unusual sounds. Thirdly, uneven brake discs due to pits or rust can cause rough operation. Another possibility is small foreign objects like dust getting stuck in the gaps, which can usually be resolved by cleaning. For diagnosis, check if the brake pad thickness is below 4mm by opening the wheel hub, or inspect the disc surface for scratches. For prevention, keep brakes clean and avoid driving in sandy or dusty areas; regular maintenance significantly reduces risks and ensures driving safety.

[LeCorey]

I've encountered screeching brakes on my personal car, typically due to two main reasons: worn-out brake pads needing replacement or road debris lodged in the braking system. When pads wear down, exposed metal grinds against rotors producing high-pitched sounds like an alarm reminding owners to inspect; minor cases like prolonged wet-weather driving may make noises disappear. For prevention, I thoroughly clean wheel hubs during car washes to prevent dust buildup and conduct simple pad thickness checks every six months to avoid major repairs. For solutions, carefully remove foreign objects if that's the cause; if noise persists, promptly visit a repair shop to ensure full braking functionality—never compromise driving safety.