Werd! Chris is right. I run a 275/45/20 on mine. Here's a quick pic:Chris99GMC said:I'd go with a 275/45/20 it will fit a little better and it is darn close to stock.
The 275/45 will fit the 3/6 well/ You can run almost any typical 20" rim and backspacing with this tire and drop. Plus this tire size has a better selection of quality tires that you should like better IMO.
Talk to Carbondogg- he has had the same size tire with 20's and something like a 3/7 drop i think.