I see that you're in New York.
A couple of options. Phil's Tire Service (www.philstireservice.com
) has trackside support for most of the NASA Northeast and Mid-Atlantic events as well as the NASA National Champtionships. They're in Craigsmore, NY (wherever that is?).
Radial Tire (Silver Spring, MD) also has great pricing. Website is www.radialtire.com
- ask for Paul. Either company will be happy to ship to you.
No affiliations other than satisfied customer, yada yada...
I'm sure that there are other online vendors as well, but I've used both and have been quite happy.