Streetking Balloon Tire 24 x 2.125 57 x 507 balloon tire, white wall width: (inflated) 54 mm (~2,12 inches) on standard rims This tire fits on all 24″ Classic Cycle rims up to 75 mm (~2,95 inches) width! But please check frame/fork for clearance! If you assemble the tire on wide rims not to put more pressure than 16 PS. It could blast.