Brake discs are the metal rotors that your brake pads clamp against to slow the car. They last longer than pads but still wear over time and need replacing. Here is what to expect.
How long do brake discs typically last
On an average UK car covering 10,000 miles per year, front brake discs typically last between 50,000 and 80,000 miles. Rear discs often last longer because they do less of the braking work. However, driving style has a significant effect. A driver who brakes late and hard, or who tows frequently, may wear discs out in 30,000 miles. A relaxed driver may get 100,000 miles from a set of discs.
Signs your discs need replacing
- Deep grooves or scoring: Visible rings or grooves cut into the disc surface, usually caused by worn pads leaving metal-to-metal contact.
- Thickness below minimum: Every disc has a minimum thickness stamped on it. Once worn below this point, the disc must be replaced. We measure disc thickness during a full service.
- Vibration through the brake pedal: A pulsing sensation when braking usually means a warped disc.
- Corrosion: Surface rust after the car has been standing is normal and clears quickly. Deep pitting corrosion on a disc that is not used regularly is a reason to replace.
Should discs and pads be replaced together
Not always, but often. New pads fitted to worn or heavily scored discs will not bed in correctly and will wear quickly. If the discs are near their minimum thickness when the pads are due, replacing both together is more cost effective than doing the job twice. At Steins Garage we measure disc thickness at every brake inspection and advise accordingly.
Our brake repairs start from £120 + VAT per axle. Book a brake check online or call 0131 554 3423.