Hoosier 105/18.0-15 HTW Approved For Temporary Use At The Brownfield Classic and Dirt Cup
TULSA, Okla. (June 8, 2021) For the Fred Brownfield Classic at Grays Harbor Raceway on June 19 and 20 and the Jim Raper Memorial Dirt Cup at Skagit Speedway on June 24, 25, and 26, the American Sprint Car Series has approved the temporary use of the Hoosier 105/18.0-15 HTW