[Gizmo42]

Normally rotors should last the life of the vehicle. Needing to have them turned is the most 'normal' reason for replacing them. You can only take off so much material and still have them safe.

Reasons for rotors needing turned or replaced..

Rotors warping often (mitsubishis are known for this)
Driving a long time with stuck caliper
Letting pads wear to the metal
Vehicle sitting a long time after driving in winter with salted roads


I never had rotors turned until I bought my mitsubishi. Just replaced the pads. On the mitsu I had to have them turned every year or 2 because they would warp. Replaced them twice in 140k miles.

Had the ones on the rodeo turned because it started life in the rust belt and were in pretty bad shape. I didnt want to mess up my new pads by putting them on with rotors that rough.