I've been interested in the Maxxis UE-168 as a LT replacement for the 14" ST tires that came with my trailer. The original tires were Trail America ST 205/75R14. After one year I upgraded to the Max...
I'd run the current Maxxiss M8008's at least another 2~3 years. They're not cheapo junk tires and will happily run longer - much like our car or truck tires and we don't replace them every three years. Mine are currently on their 5th year and I'll keep them another 2 years.