
Hoosier product bulletin for grooving IMCA tires
LAKEVILLE, Ind. (June 23) – With the recent announcement of the IMCA rules modification to allow grooving on the IMCA G60 tire, we felt it was important to release some guidelines for this process so drivers can avoid common mistakes and get the most benefit from this new rule. The full intent of this rules modification was to potentially help customers get extra life from their IMCA G60’s. Grooving can be a useful tool in recreating the factory edge to the block and reducing block stiffness on a used tire, so its performance more closely matches a new tire. We would NOT recommend grooving brand new tires. New tires are already as aggressive as a tire will ever be, so grooving them will only reduce the block stiffness and INCREASE tire wear on a new tire without dramatically assisting performance. We would recommend that after the 2nd night of racing on an IMCA G60, customers should recut the factory groove lines with a #3 width grooving blade. Cut each block individually for best results as the [Read More]