Not that it's ever been above the speed limit just "assuming"
I've had this issue since new, have taken it to multiple dealers. They all seem like they want to help, but are getting tired of seeing me at their shop. The dealer and Jeep are blaming the tires, take it to Belle tire, and they show me on their road force balance that it's not tire related.
**** with the cruise on, going straight down the road at 70mph, the wheel, and seats are shaking. Continue down the road, it banks a little to the left/right, and begins to smooth out. Straighten out still smooth, begin to turn again, it gets worse.
I think if it were tires, it would always vibrate at a given speed. This sounds stupid, but it seems like when the two out of balance (whatever it is) line up, it gets worse, but when they're 180* from each other it smooths out.
This is my wife's vehicle, and we special ordered it and hoping for a nice vehicle, we do a lot of long freeway driving and it rides like a piece of sh!t. Yesterday I placed an order on a 2014 ram 3500 4x4 Laramie Cummins/Aisin $64K. And hope I don't have issues like this one.