Squealing or screeching when braking
Grinding noise when braking
Brake warning light on
Longer stopping distance
Brake pedal feels soft, spongy, or low
Car pulls to one side when braking
Vibration or pulsation in the brake pedal
Visible pad thickness under 1/4 inch
Metal backing plate visible
Burning smell after braking
Brakes feel less responsive
Need to press harder on the pedal
Uneven wear on the brake pads
Brake dust buildup that is excessive or unusual