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Know Why Your Car Brakes Squeak

You should all be aware of the fact that brakes are quite an important safety feature for a car and that is the reason why squeaky brakes can easily cause a driver to panic. Sometimes brakes that squeak can be a cause for genuine concern as it may signal that our brakes are broken and other times there may be no cause for concern. However, it should be noted here that certain sounds from car brakes are quite normal and are caused by different driving conditions. For example, severe braking conditions, dusty or sandy conditions or even humidity can cause various car brake noises.

Some of the common causes of brakes squeaking in a car are as follows:

Wheel Rust: This is very common and it has been seen that car disc brakes tend to squeak if parked in the open air all night. Most brakes squeak after sitting all night due to moisture from rain or dew or condensation accumulating on the surface of the rotor. When there is moisture on the surface of the rotor, a thin layer of rust forms on the surface. As the rotor rotates, the pads scrape rust from the rotor and then rust easily gets caught on the leading edge of the brake pads. Fine rust particles are embedded in the front edge of the pad which in turn causes a squeaky sound.

This squeaking sound will continue until the rust is removed from the rotor.

Brake Pads: Another cause of brakes squeaking is brake pads that are thinning. This usually occurs when the brake pads are worn and become very thin. In fact, this is an effective reminder that brake pads are in bad condition and need to be replaced immediately so as not to cause unwanted events on the road.

High Metal Content: It appears that the high metal content of the brake pads also causes a squeaky sound. However, it is natural that there is a certain amount of metal in the brake pads but some inexpensive varieties are produced with a high metal content. Even large chunks of metal are embedded in the pad material. As a result, large pieces of metal are dragged to the rotors and cause the brakes to squeak while the car is driving.

Lubrication: Sometimes a squeak sound from the rear brake is also heard after the brake pedal is depressed. This indicates that the support shoe-to-plate contact points need to be lubricated. Once the contact points lose lubrication, the metal begins to rust. When such a thing happens, the shoes will rub against the back plate, which in turn causes a squeak sound as the wheels turn.

If your car brakes squeak, it's a good idea to get your vehicle checked by a trusted car mechanic and get an opinion on the condition of your brakes and the reasons why they squeak. Remember, car brakes play an important role in keeping your vehicle safe on the road, so it's better to be safe than sorry!