chads
Guest
Duals are generally for extra width to help stabilize the machine with wide heads.  Also , to put the tires between the rows with corn heads.  We run 30.5's and like them.   I think they get around better than dual 18.4's.  Neighbor has an R-60 with duals and I can go places he can't with a 1480.  A lot of that could have to do with difference in weighting of machines, though.  I know some JD's are having wheel problems with duals and a couple of IH guys are having problems breaking wheel bolts.  If you're concerned about flotation, I would just look at a wider single tire.  Chads