Its 18'' wide, Same block pattern, Same sidewall, Same everything as the Hoosier Right Rears have always been with a NEW stamp... I'm not a chemist but it may as well be a D15...

I just wish that USAC and us racers would be smart enough to come up with a Size, Width, Compound, AND a 1 Tire per night rule. Allow any manufacture Goodyear, Hoosier, American Racer Ect... To make a tire within the rules and let the racer choose... would you allow the state you live in to make you use a certain street tire and make you purchase them just because they help pay to pave the roads? No... Let the product, the deals for the racer, and the companies marketing create some competition between them and it will only help US ALL!!!