every sprint car series in the entire country (ASCS, WoO, USAC, ASCoC, NCRA, Knoxville, Williams Grove etc) should run the same tire. Any race track that runs a weekly sprint car show or any sprint car sanctioning body should all be on the same tire. Now that's "cost effective". If you want to go to a sprint car show somewhere you dont have to worry about their rules, if you have a sprint car in the trailer you can race