Properly functioning brakes directly affect vehicle safety, yet many drivers only notice a problem after unusual noises appear. Nikita Rodionov, technical director of the international network Fit Service, explained the signs that indicate brake pads are close to needing replacement, reports infohub.kz.
The first warning sign is usually new sounds when braking. Many pads are equipped with a mechanical wear indicator. When the friction layer thickness decreases to about 3–4 mm, a metal plate begins to contact the brake disc, producing a characteristic squeal. This means the pads are still functional but should be replaced soon.
If you hear a loud metallic grinding, the situation is more serious. This sound indicates that the friction material is almost worn out, and the metal backing of the pad is now working against the disc. This accelerates disc wear and can lead to more expensive repairs.
Another reason to check your brakes is a change in their performance. If the pedal becomes too soft, sinks deeper than usual, or the car starts to brake jerkily, specialists advise not to delay diagnostics. An increased stopping distance with the usual pedal pressure should also raise concern. Vibration in the pedal or steering wheel during braking may also indicate uneven pad wear or a warped brake disc.
On cars with alloy wheels, it is often possible to assess the condition of the pads without removing the wheel. The thickness of the friction layer is often visible through the spokes. According to Rodionov, a safe margin is about 3–4 mm, and when the thickness is about 2 mm, replacement should not be postponed. Another indirect sign is shiny metallic particles in the brake dust on the disc. They may indicate that the pad has already begun to damage the brake disc.
The average lifespan of brake pads is about 30,000–70,000 km, but much depends on driving style and the quality of the parts. The expert recommends selecting pads by VIN code or factory catalog to ensure size, shape, and characteristics match the specific vehicle modification. For normal use, he says, quality analogues from well-known manufacturers, certified to the ECE R90 standard, are suitable.
Specialists advise buying brake pads only from large retailers or trusted auto service centers. Saving on brake system parts can be costly, as braking efficiency directly depends on their quality.