Last fall I had a problem on the passenger side tire. Luckily it happened in the campsite before I reached the gate. I heard a rubbing and stopped and looked underneath. There was a big bubble on the inside sidewall. The bubble burst as I got off the road to a place I could change the tire, but the tire did not go down. This was a Marathon tire, load C, 5 years old, and the sidewall layers had separated and some air had gotten in between while the TM was parked - guess i was lucky this did not happen on the road.
I replaced all the Marathons with Tow-Master ST tires (made in Canada according to the info on them). Been OK so far, but only a few hundred miles on them.
When I changed the tires I also did the round wheel well mod.
Paul
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