FAST is an organization designed by and for casual autocrossers. As such, most of our members compete on street tires, and we don’t have or need a lot of race tire classes. We’ve tried having multiple race tire classes and have never found enough consistent attendance, so we now have just one. For our purposes, a “race tire” is any tire that does not meet our street tire requirement of a 140 minimum treadwear rating.
R1 – Race Tire
This is our top class. Any streetable car on race tires can compete here regardless of modifications as long as it meets safety requirements.
- See Safety Rules for requirements related to open-top cars with race tires.
Last update 9/2015