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If the rotors have over heated you will get brake chatter. The pedal will shake when you apply the brakes. Usually the drums are a little tougher. The new rotors are very thin.
Rotors that have been marred up by brake pads can be turned on a machine and made like new. You can only have them turned a few times until they are too thin to be considered safe. Usually this thickness is stamped on the rotor.
You can only have them turned a few times until they are too thin to be considered safe. Usually this thickness is stamped on the rotor.
New drums and rotors are essencially bare metal because it allows for the most desirable characteristics for braking. Heat diffusion and friction surface and microsurface. When stored before sale, they are often coated with a film and sealed in plastic, before installing, they are removed and cleaned, so once put in to use, they will develop thin rust rather quickly.
worn thin
That your emergency brake is on or that you are low on brake fluid or the brake pads are getting thin or some other brake malfunction
When Brake Rotors Are To Thin To Turn On A Brake Lathe To Have The Minumn Thickness. They Need To Be Replaced.
You replace rotors when they get too thin, or are warped. They may be to thin to be turned and still alright to use. Rotors do not "have to" be turned to put new pads on.
Brake rotors are subject to a lot of heat and wear. After a period of time, they warp and have to be "turned". turning the rotors actually makes them thinner so they won't last as long as they did. Everytime they are turned, the thinner they get. There is a point where they are too thin to safely use. That point is stamped on the rotors and it is illegal for someone to turn past them that point. Rotors are not expensive and your brakes are the most important part of your car. I wouldn't skimp on my brakes.
The brake caliper should not touch a rotor ever. There is a metal backing plate on the brake pad that can rub the rotor if the pad wears thin enough.
new rotors are good to go from the box. just clean them with a brake cleaner before you install the pads, as rotors have a thin protective film on them to prevent rust etc in shipping and storage
yes you can believe and you can do it but what's a bit harder is braking thick ice