Hi Ron,I was correct in my figure of around 300 lbs difference per pair of tires.So to be on the safe side,lets say 250 lbs lighter for the 30.5's,he still has 50 to go,plus what about some moveable  weight?.So far he hasn't had any front weights on and it has been balanced pretty good i thought in the 2 times i watched.

Oh the rain went around us again this evening,thunder,lightning and no rain.