Excellent question. This is possibly the least understood of all car problems. Squeeky brakes, despite what you've heard or anyone may tell you, is not caused by the brake pads rubbing on the brake rotor. Instead, it is caused by the brake pads vibrating in their mounting clips on the caliper assembly. This can be caused by rust and corrosion or simply old age. If you wish to stop the squeeking, it may be necessary to replace the pads, but not always. Often you can use a compound called "disk brake quiet" or "stop squeel" (or something similar- you get the idea). Take the pads out, clean off any rust/dirt/grime, and coat the back of the pads with the compound anywhere they touch the caliper. Usually this will quiet them down.
The friction between 2 objects makes them squeak
worn pads change your brake pads and get your rotors machined while your at it
The car may need new brakes or tires because they might be wearing down.
Some manufactures use a wear indicator that causes a squealing sound when the pads need to be replaced.
Because You Need New Brakes!
No
The brakes can squeak, the suspension can squeak, the steering can squeak, the wheel hub/bearings can squeak, have a trusted mechanic determine the source of the squeak.
did you put high quality brakes on your car if so then it is normal do not worry about it. even if not some brakes just squeak all the time
Actually, automobile brakes squeak under several circumstances. The most common include pad or shoe wear and/or glazed rotors or shoes.
It is most likely that the cars brakes are bad.
need new rear brake pads.
brakes or belts check those first. a bad belt can fool ya