Asbestos Regulations Us
How come the brakes on my Hyundai are so noisy?
And do you believe this explanation from the mechanic at my local Hyundai dealership. He told me that Hyundai uses asbestos linings in their brakes. When Hyundai ships vehicles to the US, they remove the asbestos brake linings because of US regulations. In many cases, as in the case with my Hyundai Accent, the replacement brake linings do not work as well as the OEM asbestos linings.
My brakes are very noisy, and worst in wet weather and when the car is cold in the morning. Then when the brakes wear down, the noise is less noticeable. But then the brakes are worn and when I replace the brake pads the brakes are noisy again.
Hyundai recommends a brake service every 15,000 miles, especially in states where salt is used on the roads and when brakes are continually wet.
Rust forms quite easily in these conditions and more often than not, that is what you are hearing. When the vehicle is not in use, rust almost immediately starts to form. The initial noise you hear, is the rust on the rotor being scraped against the pads and then, the pads scraping the rust off the rotor when you apply them – which is why the noise disappears after a while.
It is normal, common and expected by Hyundai dealers. I think they could have explained it a little better to you though and they should have made you aware of the preventive maintenance for it.
The service they can perform will sand the pads, rotor and caliper, clean and lube the sliders (the metal clips that hold your pads in place), and then apply anti-squeal to the brake pads themselves. Not only does it help prevent rust buildup but it also prolongs the life of your pads.
It may be the Korean metal used in their rotors and pads – it’s hard to say why they rust so quickly. Going to Bendix or Raybestos should help – anything semi-metallic or ceramic should be much quieter.
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