Why Is My Car Making a Grinding Noise When I Brake?

Three common causes of brake grinding

Brake grinding is usually metal-on-metal friction and needs urgent attention. The sound comes from either worn brake pads (friction material gone, steel backing plate rubbing the disc), a stone wedged between pad and disc, or a seized brake caliper that is not releasing properly.

Worn brake pads (most common)

When brake pads wear out, the steel backing plate grinds against the rotor disc, making a harsh grinding noise, especially when braking hard. This is the most common cause. Worn pads also make your brakes less effective — stopping distance increases. Do not ignore this. Call ER Automotive on 0121 461 6097 in Smethwick and we will fit new pads and discs if needed — usually within a day if you need it urgent.

We measure your brake pad thickness and disc thickness to recommend whether you need pads only or pads and discs together. Replacing just pads when the disc is scored can waste money later.

Stone or debris stuck between pad and disc

Sometimes a small stone wedges between the brake pad and rotor, causing a grinding or scraping sound. This is less serious than worn pads but still needs attention — the debris can damage the disc if left. We remove the stone and inspect the pad and disc for damage.

Seized brake caliper

A caliper that will not release can cause uneven pressure on the brake pads, leading to grinding and a pulling sensation when you brake. This is less common but serious — we diagnose it with a road test and brake inspection. Fixing a seized caliper usually means cleaning or replacing the piston and checking the guide pins.