Brake callipers with different sized rotors
I'm upgrading my brakes from cheap Shimano mechanical disks to Juicys. I can get a good deal on 8" Juicy 7's at the LBS (much cheaper than the 6" ones). I don't really want 8" rotors, and definately don't need them. My hubs are centerlock. Can I keep the 6" Shimano rotors, and use the 8" Juicy 7 callipers on them?