Silence Squealing Brakes

Screen Shot 2016-04-21 at 2.57.07 PMThe sounds of summer are in the air. Motorcycles varoom down the road. Convertibles blasting music shake at stoplights. And, your noisy brakes turn heads to your embarrassment. Why does the droning noise increase during the summer?

Most mechanics will tell you that the physical material brakes are made of cause squeals. Others will suggest that the first morning sounds are caused by the brakes skimming off a thin layer of rust that accumulated from overnight moisture. These can both be partially true, but it isn’t the full story.

Many commissioned mechanics will push the latest after market brake replacement as the best solution. If you can’t afford their answer, they’ll counter with a simple labor charge to spray a special solution to quiet the noise for a time. But these “solutions” do not work.

What neither group of mechanics will tell you is that the person who installed your current brakes didn’t know to “clean” them prior to installation. The person that handled the installation didn’t properly remove the manufacturing “dust” from the brakes. When manufactured, the discs have small metal particles stuck in its spun grooves. Those particles, which many times are too small for the human eye to detect, will float to the surface during the overnight dew and drag across the metal during breaking.

At Hi-Tech Automotive Specialists, we bath the discs in a special cleaning solution that does more than clean the discs. The liquid actually pulls the particles out and floats it away from the discs. After rinsing and drying the discs, the installation is completed with no screeching sounds – Giving us another 5 star rating on Yelp!

The next time you purchase new brakes, ask the mechanic how he plans to prepare the discs before installation. If he doesn’t speak to the cleaning stage you can expect your brakes to squeal.

However, there are times when even properly prepared brakes start to squeal, but it’s a planned noise. Most brakes have a built in warning system that alerts the need for new brakes. Brake pads have a small finger of spring steel designed to scrape the disc when its wear limit is reached. Fresh pads are the only fix for this sound that is not easily confused with a brake squeal. The replacement pad sound is more of a ripping sheet metal noise.

About CJ Powers

CJ is an author and speaker.
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