What causes car brakes to make noise?
The noise from car brakes is both annoying and potentially dangerous, potentially leading to accidents.
During driving, drivers may hear strange noises coming from the brakes. These noises may seem harmless, but they can signal problems with the brake system. So, what causes car brakes to make noise?
Worn brake pads
Worn brake pads are one of the causes of squeaking noises when braking. After a period of use, the metal surface on the back of the brake pads wears down. When this happens, the metal strips collide with each other, creating an unpleasant noise.
Loud squeaking from the brakes means the car's brake pads have only about 15% of their lifespan left. At this point, car owners should replace the brake pads as soon as possible.
Poor quality brake pads
Brake noise can also stem from poor-quality brake pads. Low-quality brake pads don't come with new calipers. These calipers help reduce vibration during braking, and substandard calipers can cause noise. Additionally, uneven brake pad material can lead to uneven contact with the brake discs and warping. This creates gaps between the rotor and the brake pads, allowing dirt to accumulate and increasing noise.
The brake caliper has water/moisture in it.
After driving in the rain, washing the car, or parking for an extended period, the brakes may start making strange noises during use. This is because the brake assembly gets wet, and water adheres to the metal, causing oxidation and forming a thin layer of rust on the brake disc surface. When the car moves, this rust rubs against the brake components, causing noise.
Using brake pads that are not standard
According to experts, using high-performance brake pads can cause more unusual noises compared to standard brake pads. This is because these pads have higher friction, shorten stopping distance, and increase braking precision, thus producing more noise.
The brake components have just been replaced.
Newly replaced brake pads or discs can also produce strange noises. This is because the brake pad surface hasn't worn evenly with the brake disc, or the brake disc has a protective layer against rust. Therefore, experts recommend breaking in the brake system after replacement to eliminate any unusual noises.
The brake caliper pins are lacking lubrication.
If there is a lack of lubrication, the brake caliper pins will make an unpleasant noise. However, this is a rare occurrence. In such cases, a technician will replace the caliper pins.
