Ram 3500 DRW tire pressure

[Rangerman40]

So I just upgraded from a 26ft tow behind at 5500lb to a 40ft fifth wheel that comes in at 13400 empty. I usually run 80psi all around. Does that need to change with the addition of the fifth wheel? Pin weight is advertised as 2600ish dry. I haven't picked it up yet so it hasn't been on the scales yet.

[gmc6000]

Rears should be at 65 for dual wheels and front at 80 psi

[Rangerman40]

Well I guess I'm not at 80 all around.... Fronts are 80 and rears are 70-75.

[rjstractor]

Since you are going up significantly in weight if anything tire pressure would go up. But since 80 psi is your max tire pressure (unless you are running 19.5s) you are already there. If anything you could consider adjusting your pressures down a bit.