Trailer Tires...trusting the Goodyear Endurance?

I just installed two Goodyear Endurance tires on my trailer -- Load Range D. They are rated at a higher speed than my old Marathons were. I actually don't tow at high speed, but a higher rating is encouraging. Instead of inflating them to 50 lb. like the Marathon, these are at 65 lb.

In my first trip with them (700 miles round trip), no problem. But time will tell.

These are made in the USA, by the way. I may be wrong, but I think that quality control is better in the US than in China.