2025 Northern Allstars Late Model Dirt Series Rulebook
Tire Rule

Circle City (IN) Raceway (May 16)
Lawrenceburg (IN) Speedway (May 17)
Bloomington (IN) Speedway (May 30)
Brownstown (IN) Speedway (May 31)
* Right Rear – Hoosier (92) NLMT3, (92) NLMT4
* Fronts/Left Rear – Hoosier (90) NLMT2, (90) NLMT3

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2025 Northern Allstars Modified Dirt Series Rulebook
Tire Rule
Florence (KY) Speedway (May 3)
* The only tires approved for competition are the Hoosier: M-30S and M-60 compounds in the plated tire 26.5/8.0/15 or 27.5/8.0/15. The maximum width of the tire will be 9″ inches.
* The M-60 may be used as a right rear option tire only.
* Grooving and Siping of tires is permitted on M-30 and M-60.