I have 3 sets of Goodyear Gatorbacks for Sale on Ebay....You can look under my user name of 1993cobramustang or Gatorbacks.....Each set is described as to Tread Depth in the ads.....As you all know, these are impossible to find these days....These tires are suitable for showing your car in a concourse or judged event, where originality is important...These tires should not be used for on-road use, IMHO....Tires are OEM equipment on 1985-1990 Mustangs that utilized 15" wheels....Call or e-mail with any questions....Sandy (909) 938-8011