Tire Size Calculator May 27, 2005 15:06:47 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by HighProtein on May 27, 2005 15:06:47 GMT -5 This calculator works very well.www.silverstangs.net/4.htmlHere is the size of a stock tire on a 1998 Cherokee225 75 15 = 28.313699999999997 Inch