I had a 2005 1500 4x4 which is the same body style. I had the stock 17" wheels on it. I ran 305/70/17 Nitto Terra Grapplers and all I did was crank up the torsion bars a little bit. Filled the wheel wells perfectly and never had any rubbing issues.
I should add, I had bought leveling keys but after a couple turns with the stock keys I didnt feel it was necessary.