I will wish you luck.... My fil put 4 on his TT and I bought it from him. I thought I had good tires too. They were the 15" E rated ones. He had them balanced and kept them aired to proper psi. I did too, knowing the horror stories of them. I added on board air to make sure that I checked pressures before each travel day, felt tires at each stop, did everything known to RVers to insure no problems. I almost had one explode on me!! I noticed a strange looking tire shape when I returned to storage after a pull from NC to home in Fla. I had to put the spare on and took it to the selling dealer. They were willing to change all four, one at no cost and the other three prorated for ware. I opted for 5 new 16" E rated BFG Commercial T/As instead. Cost me more but I didn't want anymore Carlisles. Never had another problem with TT tires.
Again good luck with your choice.....
2001 Excursion PSD
2000 CRV Honda
2006 829GRSS Flagstaff TT
2004 Twin 2000i Hondas'