We’re added some bicycle tire sizes (mostly, rare Dutch sizes) to the ISO cross-reference list in our tire-sizing article. We think we have all currently available sizes covered, but if you know of others, please let us know.
Tag: sizes
More tire-sizing updates

http://sheldonbrown.com/650b.html : added more info on “27 five” tires, and a photo (thanks to Aaron Goss!).
http://sheldonbrown.com/tire-sizing.html : added several tire sizes
Update to the page on 26-inch tires
Update to the page on “26-inch” tires — there are actually 5 common tire sizes called 26-inch and if that isn’t enough one is also called “27.5” The updates cover new developments in availability, naming and tire widths.