Origin8 Tsunami Wire Bead Fat Bike Tires, 26 x 4.0, Black/Black Well-spaced and siped lugs help keep rolling resistance at a minimum even while running low air pressure Large siping of lugs provides additional grip in sand, snow and other unfavorable conditions Staggered corner lugs provide a stable and predictable turning platform Available in 120 TPI for a supple, obstacle conforming tire, or 30 TPI for a durable yet forgiving casing