Originally Posted by Boulderv7
the tires are most likely not balanced correctly. I would take them back and have them rebalanced, or rebalanced at a different shop. even a tire that is a little off balance can cause wobble in the front end.
X2. Having them balanced by another shop is the way to go as a first step. I have had friends that had wobble with stock tires, so if your tires are balanced correctly, have the alignment checked. Out of those two, that should generally solve your shimmy.
I've had the Centramic wheel balancers for a few months and they don't eliminate the wobble but they have smoothed out the ride in the tires so for me they do work. The balancers would more of a last resort or you could use beads in the tires as well.