Kenda K23 26 x 1 3/8 x 1 1/4" (37-597) "Schwinn" Tire
In my experience, this is one of the rarest tire sizes and most difficult to source. It may be that Schwinn was not a common brand in my region of Canada or that since it was used primarily by Schwinn, it is considered a proprietary size. Either way, it's not common. With any tire it's best if you can confirm the ETRTO size (37-590) since the imperial size 26 x ...can often be misleading. However, if your bike is a Schwinn and your current tire is 26 x 1 3/8 x 1 1/4", this is your tire.
Tire Shipping: Due to shipping cost calculation methods we choose to to ship our tires folded to reduce the shipping costs for our customers. This does not harm the tire in any way. If you prefer to have your tires shipped "round", at an extra cost, please let us know at time of ordering.