ok for tire size, i think that i have 30's on there right now with a 2 or 3 inch body lift, there may be more on it(leaf spring Hangers?) but i doubt it. i am aiming to eventually be at 35" tires and would like to be rid of the body lift. a 4 or 5 inch lift would be nice. this is my daily driver, witch was one of the reasons for staying with the IFS. But if there isn't anything of quality out there then i probably will go with the SAS.