Just to add some data to the thread, I purchased a set of the brand new Goodyear Endurance trailer tires (205-75-15, Load Range D) for my 16' car hauler and hauled a Jeep buggy from Tampa to Moab and back (~4200 miles). Tires were super smooth, no issues and no appreciable wear. Ran at 70-75+ the whole trip. Goodyear just came out with these tires earlier this year, the big selling point is that they are actually made in USA! From a price standpoint, they were $115 from my local independent dealer, which is right in line with the Maxxis trailer tires that several buddies have had good luck with, although the Maxxis are China made, along with almost every other trailer tire.
Obviously will have to see how they hold up over time, but so far very happy.