26 Inch Bike Tires that are fractional sizes will fit 3-speed bicycles and many youth 10-speeds. The exception is Schwinn, which once manufactured an S tire (for Special) that only fitted certain Schwinn models or older English Club bikes. Kenda makes the S tires now. A way to tell the difference is the ISO number. We offer both the standard 26x1 3/8 (ISO 590) and the S version (ISO 597) in economical BikemanforU Combo Packs. When you open the box, you'll find 2 Tires, 2 Tubes, and 2 Rimstrips (to protect your new tubes from spoke nipples inside your bicycle rim), along with a printed Tire Reference Guide. Watch BikemanforU videos as he reviews each tire and get Free Shipping on your combo purchase. Not sure what you need? Just give us a shout 631 902-0836 (Mon-Sat 9am-5pm) or click on the you-know-who certified seal below.