I currently have the stock 17" tires and rims on my 2007 GMC Sierra Crew Cab 4x4 z71 truck. I would like to upgrade to 20 X 9 inch wheels. I am also considering the installation of a leveling kit to allow for more space in the front wheel wells. The tire I am interested in is a Goodyear Duratrac, Toyo Open Country M/T, and Nitto terra Grappler M/T. Any thoughts on what size would work well?