Quote Originally Posted by Pittman06 View Post
Its more then likely a bent wheel that was on the back that you didn't notice. Balance NEVER causes a steering wheel shake unless there REALLY bad. Balance always causes a vibration, a shake is almost always a direct result of a bent wheel or a tire hop from broken belts or out of round tire. Take it back to your tire shop and have them spin your fronts and look for a bad tire or bent rim

edit- Swap your wheels front to rear to check this at home, side to side won't change much. Get the bad one to the right rear to minimize you feeling this
In my book, a vibration in the steering wheel is very similar to a wheel shake. For someone not familiar with cars trying to figure out a problem over the internet, I assimilate the two the same. And from that, I try to offer advice for the most common problems first.

None the less, have someone take a look at the tires, rims, and check balance.