Ouch 11.5" wide tires on 10" wheels? That's an awfully wide wheel for that width tire. Be wary when airing down, 7" or 8" (max) wide wheels is the usual recommendation for that width tire.
For 32" tires, I'd definitely install a 1" body lift if you don't have a suspension lift installed. Unlifted, a 31x10.50 is the tallest/biggest tire recommended so for 32" tires, a 1" body lift will be a good thing to add that extra clearance those bigger tires require.