Found this forum helpful, so posting my ride.
2017 GMC Sierra all terrain went with a 3 1/2 superlift, and 305/55/20 on the tires, 33.2 diameter 12.4 wide tire, Toyo RT’s, I don’t mind the hum of MT’s, but these tires are quiet! I’m happy with the no noise. I get a little rub on the inner front liner, but I’m pretty sure a zip tie will take care of it. Other than that super happy with this lift and tire combo! I really wanted to use the stock rims. Ended up with 1” higher in back. Hopefully this helps someone researching...
