Nylon
Regarding the NYLON issue, a number of years ago, Goodyear Marathon's were having horrible issues with their trailer tires blowing or coming apart. At the time, their answer was to add a belt of NYLON on the outerside (tread side) of the other belts, which, included a steel belt. Their reasoning was that the steel & other materials expanded when they got hot & after numerous hot & cold changes, the belts loosened up everything in the tire carcass & finally they came apart or blew. The NYLON does not expand with heat & acts like a "girdle", holding the other belts in their proper place.
I think adding the NYLON helped but, did not completely eliminate the problems. Marathon's still grenade, occasionally!!!
My post is not designed to conflict with jelag's posting about NYLON. I have the utmost respect for his knowledge & read everything I can find that is written by him. I got my information from the Goodyear Rep. whose job was to deal with problematic tires. He, also, said that these tires are rated for no more than 65 mph.
You know, you would think that if we can put a man on the moon & bring him back, we could build a decent trailer tire that will go over 65 mph. & last awhile!!! How do they explain the racing tires that will go over 200 mph. , without failing? 65 mph. should be easy.
I would love to have 16" wheels & LT tires on my trailer. Don't know if they will fit the wheel wells, though.
Joe F.