does the drivers door have a tire pressure sticker on it ?
the 65 psi is a maximum amount allowed for that particular tire, truck fully loaded to the max
I think i would maybe go up to 45 psi & try it
then try increments of 2 psi
2009 Ram 1500 SLT QC, HEMI , 3.55 axle, Bushwacker flares, soft tonneau, Line_X, DEBO Step, Mag-Hytec, Weathertech mats
2016 Ram 3.0 diesel 3.55 w/LSD, G2 tonneau, Line-X, Weathertech mats, Mag-Hytec differential cover, Nfab bars, CB radio, Autonet wi-fi router, EGR bug deflector