[Boss Hoss]

I got my new rims and tires a few weeks back(35x13.50-20 procomp xtreme all terrain) and i am happy with them but when i get around 55mpg i get a little shake in my steering wheel. The truck as a whole does not vibrate, but i can defintely feel it in my steering wheel where this was not an issue when running the stock tires/rims. Personally i can live with it, however i happen to be amongst you married folks and it drives her nuts(that i paid that much for tires and rims and now my steering wheel shakes and it didnt before). I went down to the local Big 10 tires and they say they can re-balance them for $20/tire but cannot make any promises that it will help and quite frankly he doesnt think it will. What do you guys feel about this? Should i be able to get these tires to balance up just as good as a stock tire/rim where you feel no vibration through the wheel or elsewhere?