If rotors are smooth and shiny, they are good. If still not certain, ask at brake shop.
When rotors need to be changed usually the pads have worn down. It is always a good idea to change pads when changing rotors.
As long as they will not be undersized after turning.
Yes. It does not make a difference whether is is the conventional, slotted or drilled rotors. They can all be machined in a brake lathe with the same accurate result.
after changing rotors
you can't buy new ones
Possible wrong rotors???
In 99% of cars, no. The only exception to this is if your rotors are drilled and/or slotted in a directional way. If your rotors are just normal ones, there is no such thing as a left or a right rotor.
If you manged to replace the rotors w/o unhooking the calipers - no.
A lot of the aftermarket rotors are drilled and/or slotted to dissapate heat. Check with Baer on the net.
There is a legal minimum thickness for all rotors.
Some as the pads and rotors break in but it shouldn't be excessive.
R1 concepts sales slotted and drilled front rotors with ceramic pads for under 150.00