Lakeville, Ind. (October 14, 2026) – Hoosier Racing Tire is pleased to announce that 21” sizes in the TrackAttack Pro have recently become available.
The two new sizes include: 325/30 ZR21 and 345/25 ZR21.
Full dimensions are listed below.
The most up to date information on the TrackAttack Pro can be found at trackattackpro.com