With its first postwar truck design, Ford ceased building trucks on car platforms and used a purpose-built truck platform instead. The truck was available in eight sizes and weight ratings, from the ½ ton capacity F-1 to the three-ton capacity F-8. In 1953, Ford replaced the F-1 with the ½ ton F-100, along with the F-250 ¾ ton trucks and the F-350 one-ton trucks. In 1984, the F-100 was replaced by the F-150 line of trucks. Since 1982, F-series has been the best-selling vehicle in the U.S.