My Duster runs 15x12s with a 13x31 tire, which fits inside the minitubs with the springs moved to the rails and the wheel openings trimmed fore & aft. Not quite enough room for a 14x32. I run a 4.00" BS due to its narrowed Dana, 44" wide IIRC. Here's a pic @ low speed.

6864761-SRP61210.jpg (70 downloads)