weargle is right but wrong at the same time. the rings are made to help even torquing of the wheel, this is true. however, without them, the idea that the wheel went on a little bit not cenetered certainly isn't unheard of. i'd get the rings and see if it doesn't fix it. they're not much money even if it doesn't, and it certainly doesn't hurt to have them. i'm a belle tire employee also. 63.36mm hub size is the size you'll need
