INDYCAR allows optional lower underwing sidewalls for cars in Indianapolis 500

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INDYCAR has released the following statement in regard to aerodynamic bodywork component kit regulations for the 2016 Indianapolis 500 Mile Race presented by PennGrade Motor Oil:

"Following extensive data evaluation following the Verizon IndyCar Series aero kit test at Indianapolis Motor Speedway on April 6, INDYCAR is permitting manufacturers to lower the optional underwing sidewalls by 9 millimeters (0.354 of an inch) for the 100th Running of the Indianapolis 500 presented by PennGrade Motor Oil. INDYCAR maintains its position spelled out in the 2016 Verizon IndyCar Series Rule Book mandating the use of domed skid plates and prohibiting the use of underwing strakes on all cars in this year’s Indianapolis 500."



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