Information regarding new sprint car rules since last year for upcoming events at Knoxville Raceway
Wednesday, July 25, 2007
Tire rule: all events including 17th annual 360 Nationals presented by Vermeer, Brodix Tournament of Champions, Factory Value Parts World Challenge and the 47th Annual SuperClean Knoxville Nationals presented by Factory Value Parts.
Right rear tires: Hoosier sc 12, sc15 or sc 25
Left rear tires: Hoosier d12 or rd12, Goodyear 100 or harder and American Racer 30 or harder.
Other then the regular show on July 28th you do not have to run the same right rear tire all night.
Shocks - No cockpit adjustable shocks in the 360 class.
Top Wing: Center Foil maximum size of 25 square feet with a maximum width of 60 inches. Center Foil must be square or rectangular in shape with all 4 corners set at 90 degree angles with one (1) degree variance allowed. Side panels must be square with no more then 8 degrees variance.
All specific wing information is available online under the 2007 rules. Please note that flat wings are allowed with a 1” wickerbill.
All rules are posted at the Knoxville Web site.
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