I've had it with cheap Chinese trailer tires!

you didn't state what kind or size of trailer, nor the tire size so I'll assume you have 15". My old enclosed 24ft had 15". I ran GY Marathons, Carlisle 8 and 10ply, Maxxis 10 ply and it all pretty much came down to throw them out after two years or you WILL be changing a tire. Our new trailer has 16" wheels. The first set of Load Star (Kenda) tires lasted 4 years, 3 of them living in a much more tire friendly environment (not the heat of the desert SW). We sell tires at work and I opted for some cheap 10 ply HI RUN tires..... wore them out in a year, literally ran the tread right off them in probably 5K miles. I saved one of the old Load Star tires for a spare (I carry two), so I got the model number of that one and ordered another set of those and so far with 3K miles on them they seem to be holding up like the original set. They are load range F and I run them at 95 psi as recommended. My next set will be either load range G or I might try the LT tire route that many seem to have good luck with. FWIW I weighed the rig coming back from Salt Lake last weekend and we were 17400 combined. Dodge lists the truck as 8800lb so trailer is sitting at 8600LB or so...

The Kenda tire is also a Chinese tire iirc Karrier ST235/85R16 Radial Trailer Tire - Load Range F Kenda Tires and Wheels AM10501

Heat kills trailer tires. Often when I hit the road the surface temp of the highway will be 150 or greater. That combined with trailer load and speed makes for the perfect storm for failure. Even sitting in the yard covered will ruin them in a couple years. After a race I'm attending July 9, I will pull the wheels off the trailer and store them inside till mid September when we go racing again.