Current Tires for USAC .25 Competition

Written on 03/07/2022


Below are the current tires that are permitted to use in USAC .25 competition:

Pavement Series
Right Side – NY1 only for National, Regional and Club races.
Left Side – D10, D20A and A35 for all national and Regional races.
Left Side - D10, D20A, A35, RD40 and R50 can be used for all club races.
 
Dirt Series
Right Side – NY1 or D10 for all national and regional races.
Right Side - NY1, D10 and D30 can be used at for all club races.
Left Side – D10, D20A and A35 for all national and Regional races.
Left Side - D10, D20A, A35, RD40 and R50 can be used for all club races.

D30 right side and the R50 and RD40 left sides are very limited on inventory and have been discontinued by Hoosier.  They will not be made again.  If anyone or any club would like to utilize them, you can order them online at hoosiertire.com and get them with free shipping.