My little world of brake repair
Rotor surface issues will cause your brake pedal or wheel to vibrate. If in need of repair, your brakes may also squeal until you come to a full stop or when you release the brake pedal. When that happens, it means that the brake wear indicators may be scraping against the rotors. The grinding and growling sound of metal on metal means only one thing: that your brake pads are completely worn away. It is advisable to have a certified brake repair technician inspect your brakes on an annual basis, twice a year if you regularly do heavy hauling and towing work.