Washburn Gen 2 is built for riders who tackle everything from rough roads to fast gravel, sometimes all in one ride. Its proven center slick delivers outstanding rolling efficiency on pavement and packed dirt, while the shoulder lugs dig in for confident handling in loose corners. The key upgrade is a new 120 TPI casing that boosts comfort, efficiency, and durability without changing Washburn&';s trusted tread design. Recommended rim internal width: 21 29mm (optimal: 25mm) Always check with your rim manufacturer to verify rim & tire compatibility before assembly or use 120 TPI casing delivers a smoother, more-compliant ride, greater grip, and Teravail s trusted tubeless reliability all at a lower weight Tubeless-ready to prevent flats and boost traction and comfort at low pressures Durable casing defends against punctures and abrasion Light & Supple casing delivers a compliant ride and reduced weight Fast compound reduces rolling resistance for a quick-rolling tire