Cara Krstolic, Firestone's director of race tire development and production, takes RACER inside the company's new alternate NTT IndyCar Series tire that makes use of a new and sustainable source of rubber in its green-banded sidewalls.https://youtu.be/I_pI2UUYZtQ

Firestone’s green-banded race tires featuring sidewalls made from sustainable guayule rubber made their NTT IndyCar Series debut at the Nashville Grand Prix last year, and after being hailed as a success, Firestone has expanded their use to all five of IndyCar’s street circuits.The official tire partner of IndyCar says it...

After teasing its new green-banded NTT IndyCar Series tires during May’s Indy 500 Pit Stop Competition (pictured above), Firestone will go racing this weekend at Nashville with alternate compound tires that are partially constructed with rubber produced from the guayule shrub."We are thrilled to be introducing guayule natural rubber to...