Designed for Sand / soft terrain. The Top Gear front tire features unique shoulder knobs to give you confidence in cornering. Small ribs in the sub-tread give the Top Gear added traction in sandy and soft terrain. Tough 4-ply construction provides puncturing resistance and durability. Tread spacing enables better shedding of mud and less buildup of dirt. The cupped-style tread pattern enables surprising straight line traction in sand to soft terrain. Over Ruts or Roots, ride with confidence! Unique rubber compound resists fast wearing for longer tire life. Load / speed index: 51M for front, 57M rear. Kit comes with one 21 Inch front and one-19 inch rear tire.