Discussion Starter · #1 ·
I've had two brand new rotors on the back of my new bike, both rotors appear straight. But when installed they wobble enough to rub first on the outside pad, then the inside, so there's quite a wobble in the system somewhere. I shimmed under the rotor on the (six bolt) hub mount in a couple of spots and that helped a little but I wonder if the hub mount is slightly out of spec or if the caliper mount on the frame could need facing. I can't see how a caliper issue could cause the rotor to rub on both sides though? Is there a way to check the hub mount and face it if needed? Suggestions welcome.