If you're aiming for enthusiasts and club folks, I would say figure out how you can take Toyo bucks and have the ability to shave tires. Toyo sponsors tons of amateur racing.
I ordered tires for my 944 from a small, independent store out of state because they knew what DOT-R tires were, would take my Toyo bucks, get the right tires, shave them, and ship them out to me.
Find out what tire companies sponsor amateur racing series in your area, give out scrip as awards, and what it takes for you to be able to accept it and get reimbursed by the manufacturer.
