I have a question for you all. I have just recently bought a 92 Coleman Sedona. I think its one of the smallest popup's, which is why I picked it up. It currently has 20.5x10-8 tires on it, my little boat trailer has 4.80x12 tires on it that are brand new and both are 5 lug, I just put them on a month ago. I am thinking about selling my boat as I want to camp more and I can't tow both when I go so I figured I'd just pick up a decent alum. canoe. Other than one set is new, would you switch them? Also, why? what would be some advantages and disadvatages to doing so? I understand that the 4.80x12 would offer much less rolling resistance.