Genuine Firestone 34x4.5 Indy tire. Original development drawings were used to recreate these classic Firestone Indy tires. These tires are 100% accurate, from the ribbed tread design to the size of the Firestone lettering. Firestone Indy tires have a Blackwall sidewall, but paint markers are available, so you can paint the letters over for the authentic look. These are exceptional tires for a restored vintage racing car. These tires are made in the USA, and they feature a four-ply nylon construction.