Yes, Mr. Burchfield has earned my respect. He shared his amazing story with me privately.
The basic problem with trailer tires, other than the Communist Chinese versions which are throwaway crap and would be comical if it wasn't so expensive and dangerous to use them, is the fact that most people don't pull their trailers as much as they sit parked, usually outdoors. Tires deteriorate from UV rays and from sitting, drying out just like a piece of fruit picked from a tree and left out. If trailer tires were used every day they would wear out and be replaced just like car/truck tires.
I read an interesting explanation somewhere, possibly on the TDR forum, in the last several years. The writer's explanation, intended for non-engineer laymen like me, was that you can think of a rubber tire as having life blood or a component of "rubber oil" contained within the rubber. I am paraphrasing. The writer explained that if the tire is rolled and flexed frequently, the so-called rubber oil is moved around throughout the tire carcass as it flexes, and this is the lifeblood of the tire carcass that keeps the rubber lubricated within, flexible, and alive. If the tires sits for months it dries out, weakens, and failures will result when it is returned to highway speed, particularly if loaded.
A good general rule of thumb that many understand and use is the life of a trailer tire is between three and four years, irregardless of the fact that the tire may have perfect, full-depth tread, may have only been rolled ten miles. It must be replaced every three to four years to avoid damaging tread separation and blowouts.
I know, it is painful to pay another $800 to $1500 for another set when the tires you own look perfect.
As for Communist Chinese tires, I have said it frequently: I wouldn't allow a free set of them to be installed on anything I own that rolls faster than my lawn tractor. I don't care which name of Communist Chinese junk it is, even if the name sounds Americanized or rugged, even if they have million dollar advertising on radio, television, and billboards proclaiming their rugged reliability, they are crap and I don't want any.
While I'm on my stand making a speech, I feel the same about ST tires. They are nothing more than a way to scam the uninformed. Some clever marketing guru at Goodyear tire and rubber came up with the clever idea several years ago and sold much of the American public that it is illegal and immoral to put anything but an ST tire on a trailer because the tire has to roll or was it because it has to slip sideways when the trailer is twisted. That is pure unadulterated BS. Show me an 18 wheel tractor trailer that doesn't slide its massive tires under 80,000 pounds, 40 tons of weight, when it backs, turns, etc. An ST tire has nothing that makes it better or different than an LT tire except BS used in advertising.
I'll step down now. If anyone would like to disagree with me fire away.
Harvey