Metallic grinding when you press the brake pedal usually means the pads, rotors, or trapped debris — here's how to tell which.
Noise comes from the front wheels
Happens when braking
The loud metallic scrape is the pad's built-in wear tab dragging on the rotor.
Pads are usually the first thing worth ruling out — most shops confirm this with a 10-minute visual check.
Metal-on-metal contact from old pads can groove the rotor surface.
If new pads don't quiet the noise, the rotors likely need resurfacing.
A small stone can wedge near the rotor and grind until it works loose.
Try backing up and turning sharply a few times in an empty lot.
Grinding is different from squealing: squealing is often just a wear-indicator doing its job, while grinding means metal is already contacting metal.
Grinding alone is rarely an emergency. Combined with a soft pedal or the car pulling to one side, it can be — see the flag above.