Bstar1952, Here are a few things to consider. I am with you, no politics from me.
The Goodyear Marathons and Carlisle tires of old are no longer with us. A mistake made by a manufacturer a dozen years ago does not mean they make the same tire today.I bought a new hybrid trailer in 2004 and it came with Carlisle tires that were trouble. One blew in the first few months and Carlisle covered my replacement of all 5 of them with a different brand. I purchased an Airstream that was three years old and had very few miles on the Goodyear Marathons. They were showing signs of tread separation so I replaced them with Maxxis. These were great tires and I got good performance from them.
When it was time to replace tires I went with the new Carlisle HD and moved up to LRE. These have been the best of all. I have over 22k miles on them and they still look great. They also hold air better than all of the others.
So, the Goodyear Endurance, Maxxi and the new Carlisle HD are all good tires. Don't listen to those who rant because of politics or past performance from years ago. My suggestion is to buy from a reputable dealer, get them balanced and make sure you have a load range tire that will cover the weight of your trailer and then some. Have a good margin and keep watching them and make sure they are aired up properly.