Do brake rotors need to be replaced if there is no noise shimmy or other brake issues?
When Brake Rotors Are To Thin To Turn On A Brake Lathe To Have The Minumn Thickness. They Need To Be Replaced.
Most often a brake repair simply involves replacing the brake pads. If the pads have worn too much though the rotors or drums will also need to be resurfaced or replaced. In more serious cases the master cylinder that controls the brake pressure will be replaced. Brake lines rarely if ever need to be replaced.
In general, normal wear can cause the rotors to become groved. The pads wear "into" the rotor during regular use. At some point, the rotors may need to be turned or replaced, and the pads may need to be replaced. Both the turning/replacing of the rotors and the replacment of the brake pads is done at the same time. Few if any professionals will attempt to "short cut" a brake job by just doing one…