One common noise that often scares people is a squeaky noise that happens when you push on your brake pedal. A high-pitched noise is indicative of brakes needing repair, especially if this is a new sound. Sometimes what we’ll call “inferior” brake pads or “inferior” parts are used on a brake job. In those cases, you should expect some squealing.
The sound is not necessarily metal contacting metal, but actually a vibration of the brake pad against the rotor, which comes out as an audible squeak. The vibration is at a decibel level that sounds like a squeak, so this can occur due to the type of brake pad used or the surface of the rotor.
However, if you have a good brake system and use high quality parts, you should not hear any noise. If noise occurs at some point in the future, you should recognize it as a problem and have the brake system inspected for any wear, tear, or other issue.
If you ever hear a “grinding” type noise, it is time to immediately take the car in to have the brakes checked. A grinding noise typically occurs when the friction material is completely gone from the brake pad or brake shoe and there is now metal to metal contact. This means there is much less friction so the braking ability is greatly reduced. On top of the loss of safety, major damage will rapidly be done to the brake rotor or brake drum which greatly increases the cost of repair.
Always have any unusual noises checked right away to avoid rapidly escalating repair costs if left ignored.
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