loading with your camper or everyday driving?
E rated tires are stiff as heck. Doubt they will soften anything. Not much give on those sidewalls.
Reason they can handle so much more weight than D or P rated tires.
Stiffer shocks, like bilsteins, will stiffen the ride but will make those crack less noticeable.
Did on my 2014. New springs did too, if I remember corectly but radically change the ride of my 2014.
Getting tuftruck springs put n my 2022 but have not done it yet. got teh springs jsut got to one of the kids to do it. setting upo appt now.
I;ve fodn the biggest thigns with cracks is my trucks length. my 6.4 box eides much better than my 5.7 did, over most roads. some roads,, makes no different, depends on teh spacing of the cracks.
Sorry I could not be more help.