I personally would go with a 10" wide wheel with a 13.5" wide tire.....You will definitely rub with anything over 13.5....and not just slight rubbing.....Everyone I know that has 37x13.5s on a 6" lift say they are fine, as long as you dont hit any large bumps with the wheel anymore than half turned. A 15.5" tire will most likely rub on the bumper, the inner fender, and the leaves....Stick with a 13.5". And yes, they will look good, and they wont rub as long as you get the right offset wheel..