Brakes squealing or grinding? What it means and what to do

Brake noise isn't always serious, but some sounds mean stop and check now.

Common sounds

• High-pitched squeal when braking: many pads have a small metal tab that squeals when the pads are nearly worn. Have them checked soon.
• Squeal that comes and goes, with plenty of pad left: often dust, glazed pads or missing anti-squeal shims. A clean and the right fitting usually fixes it.
• Grinding or scraping: the pad is likely worn to the metal and is cutting into the disc. Stop driving and get it fixed now.
• Squeak in the morning that goes after a few stops: usually light rust on the discs from overnight moisture. Normal.

Other warning signs

• A soft or sinking brake pedal: possible leak or air in the system. Don't drive until checked.
• The car pulling to one side when braking.
• Vibration through the pedal or steering: often warped discs.
• The brake warning light on with the handbrake released.

Maintenance

• Have pads and discs checked every 10,000 km.
• Replace brake fluid every two years; old fluid absorbs water and can boil on long descents such as the escarpment.
• Replace pads in pairs (both front or both rear).