Firestone To Introduce New Race Tire with Sustainable Natural Rubber at Indy 500 Carb Day. They were unveiled in partnership with Firestone, Shell and additional corporate partners, which have worked with IMS and INDYCAR on a comprehensive sustainability strategy for the venue and sport. Longtime series partner and tire supplier Firestone will play a key role in efforts surrounding the Indianapolis Motor Speedway and throughout the NTT INDYCAR SERIES. Firestone is a trailblazer in the charge for alternative and renewable sources of natural rubber and will debut a new and eco-friendly tire this May. “The NTT INDYCAR SERIES and its partners are continually evaluating ways to lower our footprint and create a more sustainable future,” said INDYCAR President Jay Frye.

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