Originally Posted by
crazyravr
Basically feels like I am going over a bump. This happens on smooth road. Any ideas?
Echoing the other posters and quoting Yogi Berra: "You can observe a lot by watching." Slowly spin the wheel and look at what is happening. There is a small rib on the side of the tire that should be evenly spaced from the rim. If the tire is not seated properly, you will see this rib "dip" at some point. If there is a hop but the tire is seated properly then you should be able to see the rim moving up and down relative to some reference point on the frame (like a brake pad)..