Or at least put it higher in the speed range?

I have my truck ready/planned to accept at least 35's. Possibly could squeeze 37's. I just haven't yet since my factory tires have plenty of life left. This vibration is annoying as heck! Dealer said there is nothing they could do (even called a Dodge Engineer), and would document that for me for warranty purposes if something happens due to the vibration.

So has anybody tried this? It should slow down the rotational speed and change the harmonics right? I will gladly put on bigger tires sooner to be able to cruise at the speed limit!

Do you think I could get Dodge to pay for the tires? (Yea right)