[john]

I call it all the same. That is the term they preached in school. You can check a rotor with a micrometer. You do not NEED to spin it. I had the dumb class at HTC when I was in HS two years ago. I learned the basics not that there is too much to brakes...

I do not know why anyone would replace them if they didn't have to but to each their own. It seems like pissing money away to me. A turned rotor is going to be just as good as new. It only takes about an hour if you drop them off at checker. If you have no idea how to check them, checker can do it along with turn them or replace them for you. I have only had to replace rotors in my old neon. Every other car I have done were fine with turning only.