Surly Larry 26x3.8" Tire 27tpi, Black/Black Skinwall Surly Larry 26 x 3.8" Tire 27 tpi, All Black Wire Bead. Larry is a great front tire to Endomorph's rear, more rounded profile compared to the Endomorph and a great all around tire for your Pugsley ! Designed for greater steering control in loose and soft conditions and on firmer ground. Note: This tire needs Super Fat 26" Wheels ! Designed to fit Surly's Pugsley frame and Large Marge rims. Will fit other manufacturer's appropriately wide rims ! ISO Diameter: 559. ISO Width: 94 mm. 27 TPI. 5-30 PSI.