Now offering Hoosier 6" treaded tires. 3 different compounds at one of the most affordable, highest value prices on the market. D30 : the compound if you’re looking to maximize your tire lifespan. One of Hoosier’s most durable treaded tire compounds. A firmer ride built to endure the sliding, bonking, and nudging of a pro!! D20: offers a versatile compound for mixed street/trail riders who like to ride hard. The D20 compound is slightly softer but the slight difference creates a smoother ride. D10: one of the most popular compounds for single track and trail riders as well as street riders who want the softest, quietest ride possible.