[fcatwo]

Bill

Per Goodyear the 15" Marathon is 1.6" taller than the 14" (28.3 vs 26.7) but only .3" wider (8.8 vs 8.5) so fit with the lift kit may not be a problem.

Beyond that however, I found in my web search last night that upgrading to 15" is more complex than I thought it would be and involves a world of choices and decisions. For instance the 15" wheels that have the 5 hole on 4-1/2" circle that fit the TM 3500lb axle are generally rated to only 2150lbs (same as the Marathon 15" C rated tire) and you have to move to a bigger circle and more holes to get the 2540lb rating. One supplier (etrailer.com) does sell a combination of the smaller circle wheel and the stronger tire but they don't say who makes the tire and the wheel alone on their site isn't rated to support the same weight as 15"-D tire. That may not matter on a 3200lb trailer but a tire warranty isn't much good if you can't find a dealer within a thousand miles who handles that tire.

Beyond etrailer, most don't say who makes their tires and some don't even say what the bolt pattern is. I did find one supplier (Cabela's) who sells the C rated 15" (2150lb) Marathon on the small bolt circle and I may go with that-- parly because I'm not sure running a 65psi 15"-D tire at 50psi is safer than running a 50psi 15"C tire at 50psi since both are rated well above our TM's 3200lb load. I'm thinking the heavier tire may generate more heat at 50psi.

I think I mentioned that it's not as simple as I expected.