Really not excited about reading this. My new one has this exact issue. I’d say from 76-83mph. It’s not horrible, but the vibration is there. It comes from the rear, my steering wheel stays smooth thankfully.
It doesn’t really have the booming/buffeting issue just driving but there are things that cause it, and plug my ears. Like when you hit the break in the road where it goes from pavement to a bridge or when a strong crosswind hits while on the interstate.
For as long as I can remember the extended length GM suvs have had a little bit of booming and could plug my ears. I remember riding in my grandmas 04 XL, going down the dirt road to their house, the washboards would plug my ears up and so would going across the cattle guard.
So far, and it’s only been two days in the new one, my wife hasn’t had any complaints with this. But we have a thousand mile ride home so we will see if she notices anything.