Description
Hoosier 15.7-8 in the RD20 compound, sized and specified for the left rear of a Jr. Sprint. RD20 is a harder compound built to last, which makes it the right call for the left rear position where you want durability and consistent stagger rather than maximum grip.
Compound choice matters more than most Jr. Sprint racers expect. A softer compound on the left rear gives up shape and stagger quickly and will change the balance of the car through a night. RD20 holds its size, so what you measured in the pits is still what you have when the feature drops.
Hoosier is the standard across micro sprint and Jr. Sprint racing, and Driven stocks the sizes and compounds that actually get raced. California recycling fee is included in the price. Not sure whether you want RD20 or something softer for your track? Call us – we will tell you what the fast cars in your area are on.
