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c is 700c?(4 posts)

c is 700c?Danthrax
Dec 22, 2001 7:45 PM
I know that the diameter is 700mm but what is c? Ive heard it stands for clincher, but that makes no sense considering that sewups are also 700c. Help?
re: c is 700c?Dave Hickey
Dec 23, 2001 6:36 AM
It goes way back when tire diameter's varied. Tires diameters came in A,B, and C. C was settled on as the standard
re: c is 700c?DAC
Dec 23, 2001 7:22 AM
This goes back to pre-war French standards. There were 700 A,B, and C TYRES, which were different widths, all mounted on 622mm diameter rims. Originally, all these sizes were for tubulars.
Educate yourselfKerry Irons
Dec 23, 2001 8:09 AM
Sheldon Brown (http://www.sheldonbrown.com) has lots of information on tire sizing.