Bobby - That's good info, thanks for posting it. I've always wondered about that. And no, I don't think you've posted it before, since I think I would have seen it.
Allen - I'm having trouble finding the Carlisles you mentioned on their web site. Can you be more specific? In the Carlisle catalog, the best Sport Trail 14-inch tire seems to be 50 psi max, 1870 pounds capacity, which sounds awfully much like the Marathons. The only 65 psi tire I find is a 15-incher with 2540 pound capacity. Both of these are bias tires, not radials, FWIW. Is it hidden somewhere here
http://www.carlisletire.com/products...ail/index.html ?
Bill