you don't mention irs or solid axle, actual rotor specs are different. personally, I don't turn rotors unless there's enough to work with and I never turn rear rotors on Volvos or mercedes that have rear ates. only fronts that are vented. I used to work for a guy who turn them to discard thickness-solid axle-8.3 mm and reinstall them. of course they warped fast. if it's a solid axle car and after turning, they 9mm or thicker, then maybe. new spec is 10.4. i'd just buy the damn things.

btw, a warped rotor you won't feel in the steering wheel, only the brake pedal. the fronts you can feel in the steering when they warp. good luck, chuck.