A review of tune up
If you see or smell brake fluid, get your car to a technician immediately as that indicates the presence of a leak. A vibrating wheel or brake pedal usually points to rotor surface issues and brakes that continue to squeal after you release the brake pedal means that the wear indicators are scraping against the rotors. The grinding or growling of metal on metal means, of course, that the pads are completely worn away. Brake repair specialists recommend that car owners have their brakes serviced as soon as it becomes apparent that something is amiss. You should still have your brakes inspected at least once a year even if nothing appears to be wrong.