Upgrade disc-brake wheels Just bought new bike with disc brakes.  If I buy an upgrade wheelset do brake discs (rotors) come with?  Or do you have to buy them separately?
Normally the rotors will be separate. Also, there are two kinds of rotor mounts: 6-bolt and centerlock. You can get an adapter to put a 6-bolt rotor on a centerlock hub (I don't think you can go the other way), so it's something to be aware of.