[dsraven]

Best thing to do is a dimension check with a drawing. Axle width at wheel mount surface, box width fro. Side to side on inner surface of fender opening and at the outermost part of the box sides behind the wheels. Use a plumb Bob and mark the floor or use a piece of lumber on the ground. Make sure the truck is level side to side when doing this. That way you know exactly what you have to work with before you buy tires. Ensure to leave room for the amount the tires will bulge with air pressure in them and allow space for suspension movement side to side so tires dont rub going around corners.