I want to put bigger tires on the Dodge Quad-cab 4x4 I will purchase in the next couple of days. It comes with the wheels plus package that has Goodyear Wrangler RTS P245/75R16's. I would like to put 265's or 285's on it. What kind of problems might I run into? Has anyone else changed their tires right off the lot? Would this make a difference on my warranty?