Scarcely a day goes by that I don't see postings online in RV forums about Chinese tires disintegrating and causing serious damages--$2-3K common.
Life is not worth the risk. My brand new Grand Design Reflection 5th wheel came in last week with Chinese Will Pop tires.
I already have a set of Bridgestone R250's ribbed 16"ers. At $195 each at Costco, they're half the price of G614 Goodyears. The rubber is 1" thick, and they're some really heavy duty tires. I've heard nothing but great things about them and the Michelin XPS Rib tires for RV use.
The only ST tire I would use is the Maxxis M8008. The Chinese tires, including the Goodyear Marathon, need to go to the dump.