DIRT TIRE GROOVING UPDATE
Thursday, July 7, 2022
Attention all Legend Car competitors racing dirt events (using the Legend Car Hoosier Dirt tire).
This update is intended to help clarify the temporary rule exception concerning grooving of the USLCI Hoosier Dirt tire.
The only two legal methods (patterns) of grooving the tire are:
- Grooving the original “plus sign” lines in each tread block. Leaving the original block in-tact with a wider (grooved) “plus sign” in the block.
- Grooving the “plus sign” all the way across the tread block. Creating 4 smaller blocks out of the original tread block.
EXAMPLE 1: Example 2: