strange noise before the car stops

[dani1983]

Why worn out disks supposed to make a squeaking or scraping noise when I not using them, and only in a low speed after I drive around 100km?
(I change them before 21000km)

[Yaris Hilton]

Originally Posted by dani1983

Why worn out disks supposed to make a squeaking or scraping noise when I not using them, and only in a low speed after I drive around 100km?
(I change them before 21000km)

Disk brake pads have little metal things molded into them that rub the disk when the pads wear down to them. That's what makes the noise that tells you your brakes are worn out. The noise is only heard at low speeds when your foot is off the brake and goes away when you step on the brakes. That's the way disk brake pads have been made since the early 1970s or so. Like I said, if you get a grating noise when you step on the brakes, they're PAST worn out! If you are prone to zipping up to stops and standing on the brakes, you can wear them out surprisingly quickly. (Plus you waste lots of gas that way.)