tuff county 4", 18" wheels and you'll be set
it depends how much you want them to stick out, and what backspace/offset is required with the lift kit you are getting.im lookin at 18"x 8.5 Gunner 8 rims. what offset do i want? one says 25 and the other says -6....
awesome lookin rig buddy, thats only @ 5" looks bigger...must be the fender flairs.. those are 33's? whats ur rims & tires? they look nice.
i will most likely be going with a 4"-6" cognito or 4" rancho lift.
there's good reason a lot of pullers use TC
http://www.tuffcountry.com/chevy-gmc-lift-kits/chevy/gmc-1500hd-2500hd--3500hd-silverado-2001-2011---lift-kits.html