Looks like the new tires have a 101 load rating so 1819 lbs vs the stock 99 of 1709 lbs, so you could probably run 30 psi or even less for a smoother ride if you don't push it or ride around at max gross weight.
I test drove the 32psi front and the 31psi rear with the P255’s. That was much smoother than the 38/39psi from the tire dealer.
I may drop it down again to 30/29 tonight for tomorrow’s drive to work.
Today I tested 30psi front and 29psi rear on the P255's. Still felt good around corners, and on the highway at 75mph, and the bumps feel comfortable. So I did a chalk test and they both look good. It almost looks like the rears could go down a psi or two. But this is with no one in the car.