UTQG: 0, SPEED RATING: J, CLASS: CP, Give your quad bike powerful traction on varied terrains with the STI Black Diamond ATV/UTV tire. This all-purpose motorsports tire features over-center tread elements and inch knobs, a design which provides a smooth ride on hardpack and self-cleaning traction on soft surfaces. The tire uses 6-ply radial carcass construction to deliver durability and toughness while maintaining ride quality. Because the tires compound is engineered for extended wear, it retains biting edges longer and greatly increases service life. Get your ATV or UTV ready for almost any terrain with the STI Black Diamond ATR motorsports tire.