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About Car Brakes Squeak

Some of the common causes of brake squeaks in car are the following:

Rust on the Rotors : This is quite common and it has been seen that disc brakes of car have a tendency to squeak if they are parked out in the open air throughout the night. Most brakes squeak after sitting overnight because the moisture from the rain or dew or condensation collects on the surface of the rotors. When there is moisture on the surface of the rotors, a thin layer of rust forms on the surface. As the rotor turns, the pad scrapes the rust off the rotors and then the rust easily gets caught on the leading edge of the brake pad. The fine particles of rust get embedded into the leading edge of the pad which in turn causes a squeaking sound.

This squeaking sound will continue until the rust is removed from the rotors. According to Peter from Northside Automotive Services, Everton Hills ” The removal procedure of resistant rust is best done by a professional as it’s also important to determine any continued grinding after the removal. Although a relatively normal circumstance, it’s best to prevent by parking undercover or in a garage.”

Brake Pads : Another cause of squeaking brakes can be thinning brake pads. This usually happens when the brake pads are worn out and has become extremely thin. In fact, this is an effective warning that the brake pads are in a bad condition and needs to be replaced soon so that it does not cause an untoward incident on the road.

High Metal Content : It has been seen that high metal content in brake pads also cause the squeaking sound. However, it is natural that there is some amount of metal in the brake pads but some of the cheap varieties are manufactured with high metal content. In fact, large chunks of metal are embedded into the pad material. The result is that the large pieces of metal drag on the rotor and causes the brakes to squeak while the car is on the move.

Lubrication : Sometimes a squeaking sound from the rear brakes are also heard after pushing the brake pedals. It indicates that the shoe-to-backing-plate contact points need to be lubricated. Once the contact point loses lubrication the metal begins to rust. When such a thing happens the shoes will scrape against the backing plate, which in turn causes a squeaking sound while the wheel rotates.

If your car brakes are squeaking, it is best to get your vehicle checked by a trusted car mechanic and get his opinion on the condition of your brakes and the reason as to why they are squeaking. Remember, car brakes play an important role in maintaining the safety of the vehicle while on road and so it is always better to be safe than sorry!