Timing belt replacement, a review of the topic
If your brakes squeal after you have released the pedal, have your brake wear indicators checked as they may be scraping against the rotors. Any grinding or growling results from metal on metal scraping; your brake pads have most likely worn down. Brake repair experts recommend that you get your car in to your repair shop as soon as any of these signs appear, before the problem escalates. Experts also recommend that you have your brakes inspected (and repaired, if necessary) at least once a year, or twice a year if you regularly use your vehicle for heavy hauling and towing work. Any deviation from quick and quiet brake functionality should be checked as soon as possible.