With my new Jamis Aurora touring bike I suspect the rear wheel requires balancing of some sort. When on the bike stand I spin the rear tire at a fast rate and it seems to bounce up and down. At first I suspected the rim might be distorted but it seems fine, perhaps it's not perfect and required wheel truing? Or could it be the crappy stock tires they put on? Upon close examintation the tire does seem a little malformed.
It's a very noticeable vibration, if I hold the bike up from the seat post and spin the tire it's very noticeable...almost too much.
Any ideas what may be causing the problem and how I can remedy it?