I don’t agree with…“just keep them inflated to the proper pressure and you shouldn’t have a problem, no matter what brand”. My 2106 (new) trailer came with china tires and several separated, including the spare with just a few hundred miles. Just got done camping with my neighbors and we found his spare was separated. It was so bad you could see it through the tire cover. His trailer is brand new and this was their 2nd trip. My 2018 trailer (purchased new) came with Endurance tires. They are on the wear marks now and need to be replaced but I’ve had zero issues. We live in the Southwest where it’s hot as hell and the roads suck, so 5 years is really good. Spend the money and avoid road hazards as best as you can.