wont be any difference, I looked around at a couple manufacturers websight. They don't make that tire, just tell your tire guy to get a US made tire, lot of problems with the chinese trailer tires coming in lately. Being 15 inch I am guessing a bumper pull, just make sure tire is rated for the max load. C rated tire would be good for about 7k lbs assuming 4 tires, D rated tires will probably hold up longer, not sure if 15" come in d rated though... Did I confuse you more ?
LOL,, just tel tire guy US trailer tire (dont let em sell you car tires) rated for the weight of your trailer loaded.