In an effort to enhance the raceability of its Dallara chassis in the aeroscreen era, IndyCar allowed teams the chance to add 10% more downforce into their cars via a raft of aerodynamic options.
The racing at Texas in April earned rave reviews, as the increased aerodynamic loads allowed the cars to run harder for longer. These included additional bargeboards and, for Indianapolis, additional underwing wickers and a new rear wing main plane pillar.
