highway vibration at 60 mph

[Esox]

I have a 2022 Ram 1500 Laramie with a highway vibration at 55 mph. Dealer said tires bad. I replaced tires with new ones and vibration is still there. What could be the problem?

 

[crash68]

Did you have the tires road force balanced? Not all shops do this without request.
Something else to try, use the ERS switches and limit the transmission to 8th, then 7th and then even 6th to rule out of it's an MDS issue.