After much deliberation and discussion with others, I decided to go with 255/85-16 Dunlop Radial Rover RVs. Being installed as I type this, so I can't even tell you how they ride yet. I still want to go to the 315s later on, but can't change wheels now. I talked to a few about 285/75s, but didn't get the impression that they worked well at all on a 6. 5" rim. The 255/85s are the same height (. 7% difference), and will probably work better in my application, which is mostly highway and very little flotation situations. They're D rated (3000# single), which is higher than the 265 Michelens they are replacing. Decent price as well. Hopefully I can get some digital pics of the new look to add to the website soon.