Alright i have 08 silverado crew cab Z71, i am thinking about adding a 2.5 truxx leveling kit. Now what tire size should i get, I know the 285/65/18 will fit, but i want to maximize my tire size. Will the 305/65/18 fit, its only an .8 bigger in section width, and a 1.2 bigger in diameter. I might have to go with the RC 3" lift. Please comment.