Why Do My Brakes Squeak?

Break Noise

There’s nothing more annoying than the sound of brakes squealing or squeaking when you come up to a stop sign in the summer. If it’s not your brakes, then it’s probably a vehicle beside you. But why are your brakes making noise, and is it actually a problem that you need to fix?

There are a variety of reasons that your brakes could be making noise. It could be as simple as some dust or rock caught in your wheels, or it could be a sign that it’s time to get your brake pads or rotors replaced. Brand new brake pads will also squeal at first until they’re broken in, and you may even smell your brakes for some time after a service.

If your brakes aren’t functioning normally, or it’s time to replace your brake pads, then you should book a service appointment at Mississauga Kia. You can also contact our Service Department by phoning us and we can answer any questions you have. Our dealership serves Mississauga, Oakville, Brampton, Milton, and the Greater Toronto Area (GTA).

Why are my brakes squeaking?

Brake Pad Material
If you’ve ever purchased brake pads from a dealership or auto parts store, then you know there are different grades, prices, and types. Some brake pads are made with materials more likely to make noise than others. Some metallic brake pads will naturally make some noise, and this is not an issue that would actually affect the performance of your brakes.

Worn Out Brake Pads
Most brake pads are equipped with a ‘wear indicator’ that begins making noise once your brakes have worn beyond their safe limit. This indicator is a piece of metal that will rub against your brake disc or drum to create a high-pitched squeal whenever the brakes are applied. If this is the cause of your brake noise, then you need to replace your pads as soon as possible before damage to your rotors or drums occurs.

Improperly Installed Anti-Rattle Clips
Brakes are equipped with anti-rattle clips or shims that are made of stainless steel to prevent corrosion. Still, these clips can decay over time and lead to squealing and other noise during braking. If they are improperly installed or corroded, these clips may cause squealing noises during braking. If this is the case, you should have your shims and clips inspected, re-lubricated, and installed by a professional to elimate the noise.

Scored or Grooved Brake Rotors
If your brakes have been abused in the past, or if they have gone on without getting pads replaced in the proper intervals, then damage can occur. If you look behind your wheel and see scoring, debris, or deep grooves on your brake rotors, then you know that they need to be replaced or resurfaced.

Glazed Brake Pads
In some cases glazed pads may be the culprit. Brake pad glazing means the friction surface of the brake pad has become smooth due to excessive heat. Depending on the severity of the glazing this may be remedied by brake rotor resurfacing or may just require replacement.