I have a 1998 Ford Ranger XL, 4x4, automatic transmission, 3.0 Liter V6. It has the stock tire size 235-75R-15, Walmart specials. Just looking a the rig, it's obvious that the tires are undersized for the wheel wells. So I'm considering buying a set of bigger A/T tires, either 30x9.5R 15 or...