I am wondering what size spacer lift I would need to be able to fit 275/70/18 tires? These are 33.6" tires, the 265/70/17 are 32", and the 285/75/18 are 34.1". Anyone with the 2/1 could you tell me if there is enough clearence to fit a 1.5" bigger tire? I want to get a 2/1 or 2.5/1.5, minor fendor trimming is fine. Also what is it that tires first come into contact with?