Knobby Tire 26 x 2.125 Whitewall 26 x 2.125 57 x 559 white wall This tire fits on all 26″ Classic Cycle rims up to 82 mm (~3,23 inches) width! But please check frame/fork for clearance! If you assemble the tire on wide rims not to put more pressure than 16 PSI. It could blast.