Silver: I think you are starting to stress and get wrapped around the axle worrying about these tires (I mean that in a nice way). You got the answer in this thread; if you don't want to go the LT route, try a set of Maxxis Tires in the load range suitable to your trailer and the axel load ratings.
BTW, note that all trailer tires are not made in China. For example, the Maxxis tires I have were made in Thailand, the company is from Taiwan not the People's Republic of China. No matter what you buy, you can have problems, there are no 100% guarantees in life except death at some point (some folks say taxes, but a lot of folks don't even pay those....).
Buy and mount tires, hook up trailer, go camping and have fun! ;-)
1999 28' Safari
2012 F150 Platinum Max Tow 7650 GVWR 3.73 Elec. Locking Diff.(Prev 2003 Dmax).
Honda EU2000i, Equalizer Hitch
AM Solar Panels 150W - 2 Trojan T 105 6V Batteries
On internet forums, please research and separate the wheat from the chaff (including mine!)