no vehicle comes with 2 different kinds of tires from new...unless its a car with a little donut spare tire. the Yokohama Super Digger "V" is a roman numeral for "5". my old ram 50 had a super digger "IV" as a spare when I got it and that was the original tire from the truck. I could tell from all the cracks on the sidewall from it being 16 years old and tucked up underneath the box.