[bobss396]

How were they balanced? If they were spun balanced, they should have picked up a bent rim. Look to see how much weight is on them, anything over a few ounces is a lot and might indicate a wobbly rim. Try to swap the back tires with the front and go for a ride. If the front tires are worn funny, cupped or have featheredged tread start looking for front end problems, but I think that you have something tire or wheel related. Do check your wheel bearings for looseness while you got it jacked up.

Bob