Brake pads wear down gradually, which is exactly what makes them easy to ignore — there's no single day they "go wrong", just a slow decline until stopping distances start to suffer. Here's what to watch for, and when it's time to order a replacement set.
A high-pitched squeal when braking
Most pads have a small metal wear indicator built in that's designed to scrape against the disc once the friction material gets thin, producing a sharp squeal specifically under braking (not a constant noise). It's a deliberate early warning, not a fault in itself — but it means the pads are close to their limit.
A grinding sound
If the squeal goes unaddressed, the pad material can wear through completely, leaving metal backing plate in contact with the disc. This produces a harsher grinding noise and can damage the disc itself, turning a pad replacement into a more expensive pad-and-disc job.
A spongy or longer brake pedal
Worn pads need to travel further to make contact, so the pedal can start to feel softer or need to be pressed further down than usual before the car slows.
Visible pad thickness
Through most alloy wheel designs you can see the pad pressed against the disc. As a rough guide, less than 3mm of friction material remaining is a sign it's time to plan a replacement.
Buying replacement pads
Always check fitment against your specific model and year — every part listing on Drive Store includes a fitment line for exactly this reason — and buy pads in axle sets (both sides together) so braking stays even.