A friend has a 30 ft Avion TT. He put new Goodyears and aluminum rims on it when he got it in mid 2014. He used it some for trips of 300 miles or so one way, over the next couple of years, and in the summer of 2016 he made his "epic" trip to the Black Hills and worked his way down the Rockies to Durango and then back to Atlanta. He blew a tire near Ridgway, CO on US 550, and this was a determining factor in taking the long route to Durango rather than taking the "million dollar highway" He replaced the tire in Durango with a Carlisle Radial Trail HD, on the recommendation of the tire shop who said they had very good luck with them and that the Goodyears were failing "left and right".
After returning home, My friend closely inspected every inch of the Goodyears and found knots on two of them, So he replaced the other three Goodyears with matching Carlisle Radial Trail HD tires. Has since been as far north as Prince Edward Island, and a number of trips in the South East with no problems. The tires have an 80+ mph speed rating, so there is lots of margin built into them. Probably the next best thing to equipping with Light Truck tires, for those who cannot accommodate the 16 inch wheels for the LT tires.
Carlisle Radial Trail HD tire sizes, specs and part numbers.Charles