2016 Silverado 1500
This thread has been very helpful to make a decision on what size to go with. Here is my setup to help contribute.
Went with the 275/65R20 on a Rough Country 2.5" Level. I ended up with slight rubbing on the rear of the felt fender liner.
No real comments yet on the setup as I have only put about 30 road miles on it so far. MPG has definitely dropped off some and the ride is a little stiffer, can feel the bumps/potholes more.