I've got some 15x10 rims on my 79 K10 that will be receiving a 4" suspension lift shortly. I'm down to two tire choices. Super Swamper LTB in 34x10.50x15 or Super Swamper TrXus Mud in 33x12.50x15. Now, a guy I work with has two LTB's in the size I'm looking for that he'll sell me for $75 each. I can also get two more LTB's locally for $120 each which brings the total price to roughly $400. The TrXus I can get for $140 each which comes out to $560. Personally, I like the tread design on the LTB's vs.the TrXus. And according to Interco's site the LTB tread width is 9.25" while the TrXus is 9.6". A difference of a whopping half inch. What I'm concerned about is putting a 10.50" tire on a 10" wide rim. Will it "balloon" out too much and make the sidewall more vulnerable? Should I get some cheap 15x8 rims instead?