Brake pads may eventually wear out and need replacing. If you hear metal grinding or squealing sounds, it could mean the pad’s friction material has thinned out, and metal is rubbing against the rotor’s metal components.
Vibrations or shaking when you press the pedal can also indicate that metal-on-metal contact is occurring within the braking system. You might also notice your steering wheel is shaking while driving. Finally, if the antilock brake system (ABS) light illuminates on your dashboard, you may have problems with the brake pads or other components, and you should have a professional inspect the vehicle.