Originally Posted by Ranger
Well, i took the tire and tube off the rim and put the rim alone in the dropouts. I then laid a flat ruler across the tops of the brake pads to act as a guide. It looks like there is about 1 mm of hop in at least one spot on the rim.
That's likely to be the seam where the rim is joined. If so it will be directly across from the stem hole. Doubt if that's your problem, a defect in the tire would be more likely.
Al