Fronts: 275/40ZR19 Michelin Pilot Super Sport
Rears: 315/35ZR20 Michelin Pilot Super Sport
The fronts are taller and 1” wider than stock. They fill the wheel wells and look better IMO. The rears are significantly wider, as you know.
I run 35-37 lbs. Other than occasional trough wander from wide tires on some older worn asphalt roads, no issue. Pretty high winds today, zero issues rolling down the beltway.
I agree with OFG, I’d bet difference in tire sidewall stiffness, and grip(?), not air pressure. Most of us, self included, don’t put enough miles on their trucks to worry about wearing out the middle of the tires quicker with a couple extra lbs.
FWIW: I drive in the wet in Houston. I’ve had 3 vehicles with RSAs, and not a fan of them in the wet. I changed them out when it made sense (i.e. tread wear or badly checked with age). I’ve got two vehicles on wider Michelins, one and one on Continentals. The Continentals, surprised me and I really like them. If RSAs work for you (whoever reads this), that is cool.