I am curious also if anybody has gone to the 15" rims on a TM with a lift kit. I have a 2003 2720 that has the original Marathon maypop tires, and want to replace them soon. If the 15" rims and tires will work, then I think I am going to go that route. I am also curious if any one knows if the 14" & 15" rims have the same offset.
According to the Goodyear website, both the "C" & "D" rated ST225/75R15 tires have a 1.6" diameter more than the ST215R/75R14s, and are .8" wider. That would add ~.8" to the ride height (maybe a little more for the "D" rated tire, since it is stiffer). The width would be less than 1/2" on each side. On the "C" rated 15" tire, the weight rating is 2150@50 psi, almost a 300 lb. gain each over the 14" tires. And the "D" rated 15" tire, is 2540@65, a 670 lb. gain each. If I go the 15" tire route, I think I would just go with the "C" rated tires to save a little shaking in the TM due to the stiffer sidewall.
If only they made a "D" rated 14" trailer tire.
I going to do some careful measuring to see if the 15s might work on our TM. But first hand knowledge from someone else is probably better than my measuring and ciphering.
mtnguy
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