Lets turn this around and see where your facts about a great track record come from....that what I thought... their just your own.
As I've always preached if anyone wants to know how a tires service record is doing "now and in the past" look around the net at the many trailering forums (rv and non rv). That way we get actual experiences from actual users...not just kool aid from one or two posters that promote one brand only for trailers.
I promote different brands/types of tires for trailers depending on load ranges/sizes based on what I see on rv and non rv trailer forums... not just what I've used on my trailers.
Lots of Marathon users swear by them and run thousands of miles on them and claim zero issues.....but the net with all the different trailering websites shows us a different story.