Anyone with a Ram 2500 have a constant up-and-down bounce on the interstate?
I have a 2026 Ram 2500 gas Crew Cab long bed, and I’m trying to figure out if anyone else has experienced the same issue.
On the interstate, especially around 75–80 mph, the truck has a constant up-and-down bouncing motion. I can actually see the bed bouncing in the mirrors. After hitting a larger bump, the rear can bounce 2–3 times before settling. Around 60–65 mph it’s noticeably better.
The truck did this with the stock suspension too. Since then I’ve installed a Carli 2.5” leveling kit up front, Thuren 1” soft-rate rear coils, and FOX 2.5 Performance Elite DSC shocks. I’ve also tried different tire pressures, added weight to the bed, and changed tires, but the bouncing is still there.
I recently sent the rear FOX shocks to AccuTune to have them revalved for more rebound control, so I’m hoping that helps.
Has anyone else with a Ram 2500 experienced this same vertical highway bounce? If you fixed it, what actually made the difference?
I’m also interested in hearing from anyone running a LOGIQ rear coil-replacement air spring setup. Did it improve the highway ride or reduce the up-and-down bouncing compared with coils?