Ok people, I have some thoughts from my trip that started on Tuesday up through Alabama, Tennessee and Kentucky I managed to change the vibration on a WINDY day. Yes I am stressing the windy day part because when I was traveling with the wind the vibration was VERY different or passing 18 wheelers while along side them and when I cleared them. Today I left Kentucky and now in Ohio and the day started off not so windy and really didn't vibrate at all, like it was a different truck. Same speeds on the interstate but less vibration. I am almost convinced that the vibration is aerodynamic related aka dirty air. I just traveled almost 900 miles and I could change the vibration while I was traveling and being around other vehicles.
My question here is, has anybody else noticed windy days, direction of wind versus travel and noticed how some days are better than others vibration wise?
Just a thought since some people have said tires, driveshaft, rear end etc.... and it's not correcting the vibration?