I just got my 09 GMC in yesterday and it has 10 1/2" on it now. I have coilovers on the way to give it a little more. I also have a bull bar to put on, vent visors, a programmer, exhaust, 4:56 gears, tint, and new UCA's all going on next week. I have 22x12 rims that will be here in a few days. I have two choices of what tire to go with because thats all they make in the damn 22's. I can choose a 37-13.50 or a 40-14 and that is it. I am still looking for tips on what will clear once I get my coilovers to bring it to 12" of lift. I plan on trying to get the 40s in there but I am expecting issues. I will try to do whatever it takes to get the 40's to clear. More pics soon to come with tires, rims, and other stuff.