i need to resurface my rotors, and helms says i need to use an on car lathe. to do that i'd need to take my car into the shop and let them do that, and i want to do it myself. would it still work if i took the rotors off and took them to my buddy's shop for resurfacing? or is there some reason why it needs to be done on the car?

 

How many miles are on your rotors? ............I would just buy new ones.