I put 305/55R20 Nitto terra grapplers on 20" boss wheels and they were thinner than the stock wheel and tire combo. I would definitely go 60 series for height if I could do it all over

 

They rub on the black arm, above the jackstand, if I recall correctly.

 

I upgraded to the 285-45/22's and mine rub in reverse. Left side hits torsion bar and right hits the upper a arm. I have 2wd laramie. When I checked with tire rack the guy told me in there system it showed no problem with 2010 and above rubbing, but no info on the 2009's. He asked me if dodge had changed anything on the newer trucks and I had no idea.

 

the 4th gens d%$n front axles are so far back in the wheel wells its ridiculous. even lifted, I had to run screws in my wheel wells to pull the plastic back to where it should have been in the first place

 

How is that possible? The 305/55/20 is 1.5" wider than the stock tire. Did you put them on an 8" wheel?
I have the same tires on stock Laramie wheels and they are much wider than the stock setup. It has to be something with your wheel setup.

My rub seems to only be full lock right moving forward on the sway bar with 305/55/20 Terra Grapplers on 20x9 Laramie wheels as stated above.

 

Putting either of these tires does not require me to re-gear the tranny correct?