NIsaacs
TDR MEMBER
It has a GTW around 10K, with 6K axles and 7K Dexter self-adjusting electric brakes. We don't try to pinch dimes when it comes to tires because we take it into some really nasty places in several states. We've used Michelin XPS rib E rated tires due to their steel sidewall and also our experience factor. They get replaced on a 9 to 10 year rotation, and it's time for the third set now. (It is stored indoors.) By comparison, the support box trailer that travels with it uses the same size tire but is maintained by a different office. They also use the same size E rated truck tires, but usually brands I have never heard of, or Dunlops when someone feels generous. Their experience isn't good.
I have no doubt the Michelin xps rib is a great tire, however they are only rated 3042 lbs. In your application of about 2500 lbs per tire of trailer weight you have a 500 lb extra capacity built in, so yes, I am sure you have very good luck with them. At 9 or 10 years of replacement rotation you don't tow it much.
It's hard for me to install 6,084 lbs of tire capacity on a 7k axle when I need all that and more. I also use up a set every 2-3 years depending on what trailer they are on. On a trailer with a set weight that don't change much, a tire can be matched to that weight. My loads vary every time. I also have a very generous loader operator at the cinder pit that always gives me more than I ask/pay for, since the extra is free I haul it

Nick