Groover wrote:

I am going to through in a totally different consideration if you decide to add airbags.

You can choose between having both bags on the same air line or separate air lines. Separate air lines add stability for high center of gravity loads like some 5th wheels. They can also facilitate hitching up to a 5th wheel on uneven ground by twisting the truck to match the alignment of the camper. On the other hand, when riding empty or with a low CG load a single line allows for more articulation of the rear axle which gives a smoother ride helps avoid getting stuck on uneven ground.

Grit dog wrote:

^Well assuming you got the camper package or something on yours.
OP is complaining about too much squat. So regardless he’s looking to shore that up…I think.

The regular old F250 company trucks I had, a 2012 and then a 2015 had a compliant initial spring rate. They’d stiffen up pretty good with real weight on them, but that first couple inches of suspension travel was built for comfort.

PA12DRVR wrote:

… Wonder how many of the folks asserting those opinions have been involved in a fatality or serious injury case where there was a colorable argument that the vehicle at fault was over GVWR? Not asking about tickets, warnings, pulling off the road for being unsafe: asking about a fatal or serious crash where GVWR may have been in play.