I thought it was pretty simple. The statement about never run them at max because you need to give yourself some room for the heat to increase pressure is not supported by any tire manufacturers. Cold max pressure is just that. It is safe to set your tires to cold max and load up to max gvwr and drive. No tire manufacturer says to set them less than max because the pressure will rise when you drive. They build that into their calculations when they set max psi.
If you lower pressure you reduce load capacity, albeit not very much for only a few psi. Like I said, if it makes you feel better go ahead and do it, but you don’t have to to be safe. Given today’s tires typically far exceed the required load of today’s trucks, running them lower than max is almost always just fine.
Last edited by K1500; 09/14/19.
