Hi Scott, When I first got the M15 the trailer tires had lots of sidewall cracks. I tried to get new ones before departing Florida for Connecticut, but the shop didn't have any of the right size, and, as they told me, all trailer tires in Florida have sidewall cracks.............. So we headed back to Connecticut. However, my first job, when I got home with the M15, was to get new rims and new tires.

From the discussions on the M-List, the answer was go with radials - for the reasons you mentioned.

I got Goodyear tires, with wheels properly balanced, and have been totally happy with the results. Connie