Ed - best bet may be online. At least for pricing and availability (see e.g., link below). Otherwise, if you're in a rush, see if there's a Bass Pro, Cabela's, or West Marine nearby. Walmart also sells some tire/wheel assemblies and the 175/80D13 is a popular size. http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200330262_200330262