I have owned 4 sets of GY US Made tires. E wranglers that came on our Avion, replaced with a set of GY G's then original GY G's on current Mobile Suites replaced them with GY H 17.5's.
Many thousands of miles on each set towing mostly at 62 but all were towed at 75 or more thru Arizona. They all had been curbed with all the weight on one tire and I have used a TrailerAid Plus where all the weight of one side of the RV is placed on one tire for maintenance or repairs.
All that and never even a flat! Buy quality, it will cost you but it's worth it to me!