Hey guys had some BF's 285/75/16 D rated put on at Tire kingdom truck was real bouncy at around 40-50mph. Brought truck to another tire kingdom to see what was wrong they told me that I needed to have E rated tires on there. (they say Chevy calls for 50psi in front and 80psi in rear and the D rated wont handle 80psi) so they put on some E rated same as above and Im still having the bounce, does anyone have any ideas what this could be? I thought maybe bent rim? or bad shocks (shocks are only 1 year old Rancho) thanks for any help

I'd start with the BFG's, mine did that so I took them back. Switched to another tire brand no more 45 mph bounce