Manny, are you sure those are 5.5" i thought I came up with 6.5" when I measured them. I run my 33x9.5's on 7" wheels at 22psi and like the ride a lot. They probably wear a little faster but BFGs hold up pretty well on the blacktop. I think you are fine with the wide tires and narrow wheels, that is the way to go. My new 33x9.5's came off the 8" wheels a lot easier in the tire machine than the old 9.5"s came off of your wheels. I had to use the tire hammer to get the bead to break, the old machine wouldn't do it. That is with zero psi, if you ever lose the bead, it won't matter becuase you won't walk away from the wreck.