Eligible tires for 2021 season
#29175 from American Sedan Committee · Recommended to the Board · Minutes (2020-09 Fastrack)
In GCR, Section 9.1.6.D.6.b., Tires, add as follows:
"4. American Sedans must compete on DOT “R-type” road race tires. Permitted tires are listed below. Soft “A type” autocross
tires are prohibited:
1. BFGoodrich R1 & R1S
2. Hankook Ventus Z214 C51/Medium
3. Hoosier R7 or R6 or HWET
4. Kumho Ecsta V700
5. Nitto NT101
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6. Toyo R888, Toyo Proxes RA1, or Proxes RR
7. Yokohama A048
Rain tires must continue to have DOT rating, except that softer compound dry tires, such as the Hoosier A7 (but not limited
to), are not permitted for use as rain tires.
The objective of this rule is to require the use of a more durable and economical tire. Performance of approved tires will be
monitored by the ASAC and those which are found to deviate from this objective may be subject to exclusion by means of a Tech
Bulletin or other appropriate communications."