"Tire industry standards suggest - with strong wordings - that OE tires be inflated to the vehicle manufacturer recommendations - almost always what the side wall says."
IMO this is very much a CYA by the industry, both trailer, and tire. No one wants a lawsuit based on the statement that "They said my tires didn't have to be inflated that much", after the tire self-destructs because it was under inflated for the load it was carrying. Easiest, and probably recommended by the lawyers, to say "Fill 'em full".
"Replacement tires must have a load capacity equal to or greater than the OE tires provided. Plus sized tires should have an inflation pressure set at a value that provides enough load capacity to equal or exceed what the OE tires provided."
Sez who? Why does it matter as long as my tires equal or exceed my GVWR. If I have 13,000 lbs. on three axles why do I need tires that can carry 24,000 lbs.? Please cite the regulation. And 6 "E" rated LT tires at 3,000 lbs. will equal my GVWR of 18,000 lbs. And more than equal when you figure 3,600 lbs. off for pin weight.
