These folk (and others online) have LRD tires, mounted on rims:
https://www.easternmarine.com/12-and...iler-Tire-Rim/
Nearly all trailer tires are made in China. Drive within their weight and speed ratings and you'll likely be fine. Keep in mind that MOST are rated for a max speed of 65. Judging by the folk passing me on the highway, that's one that many people exceed, and likely the cause of many blowouts.