Originally Posted by
cpach
You may get lucky and it'll work, but the tolerances for the pads are really tight so it might not. You can shim the rotor of whichever hub has the rotor more inboard to make it match if you really need to be able to swap without adjustment. Also if you have a rotor with considerably more wear you'll have to reset the pads somewhat when moving to the rotor with less wear.
Oh good point. I wouldn't have thought about that.
Speaking of rotors...
One of my rotors is a little out of true. Can those be trued? Or is it easier to just get a new one and bolt it on?
(It's not terrible. I just get a slight rub once per rotation and can see it wobble slightly as it spins. It still stops the bike though)