Before I go and pop $$ for new tires, I am curious how big can I go on 1/2 ton axles (I have a D44 front and 12 bolt rear). I have 7" of lift, so I was thinkin' I'd run 36's, but I have been told that I can run 38's or 39.5's with a little fender trimming. My only question is....is that too big for 1/2 ton axels? I have heard that anything bigger than 36's and I'll start tearing up my axles REAL fast. What d'ya think?