[SVXer95]

You know rotors need to be replaced when they are worn past the minimum thickness. If they are not under the min, simply have them cut and replace the pads. Brakes can squeal for a number of reasons, even if they are perfectly fine. Check your pads and see if there is any pad left. Then measure your rotors with a caliper or micrometer. I have the min thickness somwhere at home. It should also be engraved on the rotor somewhere.