Brake pad noises and wear out explained

Brake noise is a common part of brake operation. A majority of the time you will hear nothing inside your vehicle. Worn brake pads can make noises you would hear inside your vehicle. The most common noises are a crunch or runch sound. Another noise you may hear is a high pitch shriek. Shriek noises are very common with very worn brake pads or budget “cheep quality” brake pads, even if newly installed.

I like to install OE dealer brake parts when ever possible. OE parts fit correctly and offer the best noise control for the life of the brake pads.

When grinding noises happen every time you press the brake peddle. Your brakes are 100% worn out. the metal part of the brake pad is making contact with the metal brake rotor.

The service “wear out” specs on brake pad thickness can vary from 1mm to 2mm. Brake wear sensors will normally turn on the dash brake wear light around 2mm.

Brake pads that use a noise tab built into the pad, may make a high pitch noise only when backing up, but quiet going forward.

When I inspect brakes for wear, I look at the thinest brake pad to judge the wear % remaining. Once below 30% remaining life (around 3mm of pad thickness remaining) brake replacement will be needed soon.

If you are noticing brake noises, stop in at your local repair shop and have them inspect your cars brakes. Waiting to see if the noise just goes away can cause bigger issues.  If the brake rotors or brake calipers become damaged from metal to metal contact it can increase the cost of your brake repairs.

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