My dad just bought a 2010 Duramax Crew Cab z71 pickup a few nights ago. The truck is bad ass, but one thing is a definate eye sore, the 245/16 tires & wheels!!! Wow they look bad. Anyways, he is stubborn, doesn't want to lift the truck or level it. what size tire could he run on 18" rims (this is the rim size i think he wants to buy new aftermarket wheels for) without rubbing/trimming? 275's? Most likely he will but the Toyo A/T's. thanks guys!