TV tire pressure?

[Flapper]

Just replaced the worn out stock Goodrich Rugged Trail "E" tires with Michelin Defender LTX. Of course the tire place did not fill to the right pressure....Ford says 55/60.

Which go me thinking...for trailers, conventional wisdom is to inflate to max. pressure. What about tow vehicles? Is there an authoritative guide to adjusting inflation based on load?

For those that care, my specs are: 2012 F-150, SCrew, 4x4, Eco, Max Tow, HD Payload - door sticker is 2166 payload. Never gave it a thought with the old tires, pulling a fifth that got me right to max. payload, and they lasted 65,000. Now with a TT, payload will be around 1,600. Tire max is 80 lbs. Should I vary from the door sticker inflation?

[OldShu]

When not towing use the Ford recommended pressures.

When towing, max pressure on the sidewall. If nothing else it will reduce the tire sidewall flex for a more stable tow and will help keep tire temps down when loaded.

Adjusted when tires are cold of course.