Should be getting a TM shortly. But for years I have been running Goodyear Marathon's, and like most trailers the tires were very close to maxed out on weight.
I have use the over 65 mph tech bulletin to add 10 PSI to the load/PSI table rating. Since I am always near max weight, I over inflate the tires by 10 PSI cold, to 60 PSI when the max weight psi rating is 50. I don't travel much over 65 mph.
I know it's not published anywhere but I think it help to be 10 PSI over inflated, and since Goodyear publish the tech bulletin for over inflating by 10 PSI if traveling over 65 MPH. I do it. Now on the flip side, I most likely do have more ware on the center of the tire. But I have never wore out a tire.
Knock on wood, I have never had a Marathon tire go, but I do change them when they are about 6 years old per the date code.
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