Mostly street truck, will see dirt roads but never hard off- roading have done tt/ shackle 3.73's don't want to kill milage real bad. Daily driver 60-75 miles a day. Don't want to do body lift, don't have $ to do superlift. will put on BFG T/A's on stock teardrops. (yes 11.5 will fit on a 7" rim) So I ask ? 31's or 32's????