On a dirt-late model, the right front tire takes an extreme load on the corner entry. Tread block strength is vital to maintain to make a maximum amount of grip. Tread block flex will allow the tire to slide across the track surface and cause inconsistent handling and an unhappy driver.
The grooving pattern pictured below will offer a fair amount of tread block integrity and still add the edges needed to grip the track surface through the black/blue slick areas.
Just remember never to sipe deeper than half of the available tread depth.
