Tire Siping and Its Importance to Dirt track Racing!!!
Siping is also cutting the surface of the tire, but instead of creating a tread pattern, when you sipe a tire you are only cutting slits in the rubber. The slits may not look like much, but they serve multiple purposes. When the car first hits the track, the sipes help the tire heat up faster. But once the tire is up to temperature, the sipes will “open up” and then keep it from overheating and loosing traction. Sipes generally help improve traction but also will increase tire wear, so how much you choose to sipe any tire will often become a balancing act between traction and durability.