Drew Hayden
On Training Wheels
Have a 1950's German bike - tire says 26 x 1.75. Would it be the same as Schwinn's S7, 26 x 1 3/4 ? There is no ISO size indicated on the tire. Schwinn's S7 ISO size is 571 mm. Just don't want to order wrong size tires since there are several different 26 inch tire diameters on vintage European bikes.