Why are my brakes squeaking?
Brakes can squeak for lots of reasons that may not necessarily mean they require replacement or are unsafe. To answer this question properly, it would take a bit more explanation and knowledge of your specific car. A quick response is this: brakes squeak because the sensors are contacting; or the anti-squeal shims have been removed by a previous brake job; or the current brake pads’ material is cheap quality; or the rotors are pitted/grooved/rusted/warped. To eliminate the squeak, you have to use the factory-specific pads and shim kits, lubricate the backing plates, or machine or replace the rotors.