Do yourself a huge favor and drop your cold tire pressure down to 38 psi as recommended in your driver side door jamb. You are going to wear your tires out prematurely in the center of the tread, and you will also be surprised at how much better it rides at the proper pressures.
They set the pressures higher than called for when transporting the trucks. Mark Dodge should set the pressures to 38 cold psi when doing the PDI, but I don’t think they do that. To be fair, I don’t believe most dealers do it.
I run 34-35 cold psi in mine. You’d be surprised at the difference in your contact patch at this pressure versus your overinflated tires.