Good Question, Great post and welcome to sprint car racing. The way see it some Teams or Drivers have tire sponsers, or discounts and if they are not with Hoosier they dont get a discount like they did on their American Racer....Goodyear....whatever it is. IMO it should be a compound rule at a track for a regular show, but if usac or mscs whants a spacific tire and they supply the tire so everybody pays the same price the I dont see a problem with it.