Well I will add that we have a 2016 Ram 3500 DRW with leaf springs and sill haven't dropped the air in the rear tires to 35 or 40 psi, but compared to the 2001 Ram 2500 with camper package, it is a very comfortable ride.
Ours is a daily driver, the same as Cummins12V98, the best thing about the ride is I still have excess payload when towing.
Russ & Paula the Beagle Belle.
2016 Ram Laramie 3500 Aisin DRW 4X4 Long bed.
2005 Copper Canyon 293 FWSLS, 32' GVWR 12,360#
"Visit and Enjoy Oregon State Parks"