The Duo Stun 1 tire is an all-purpose premium rubber tire based on the popular Stunner design. Chris Doyle and Van Homan both swear by the original Stunner, so Duo upgraded the tread to withstand the bigger impacts and increased demands of today's riding. 20 x 2.35" Inflated Width: 2.36" (60mm) Inflated Diameter: 21.2" (538mm) Max Pressure: 65 psi Weight: 23.3 oz 22 x 2.35" Inflated Width: 2.36" (60mm) Inflated Diameter: - Max Pressure: 65 psi Weight: 29.7 oz