Adam Sampson's bicycle bookmarkshttps://bookmarks.offog.org/ats/bicycleAdam Sampson2008-01-13T20:35:43ZTire Sizing Systemshttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fwww.sheldonbrown.com%2Ftire-sizing.html2008-01-13T20:35:43ZMore information than you could ever possibly need about bicycle tyres.