Old 06-24-12, 05:51 AM
smelling the roses
Join Date: Nov 2010
Location: Tixkokob, Yucatán, México
Posts: 14,089

Bikes: 79 Trek 930, 80 Trek 414, 84 Schwinn Letour Luxe (coupled), 92 Schwinn Paramount PDG 5

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They're not the same. I don't have the expertise to go into all of the specs on rim sizing, but suffice it to say that 700C is 4mm smaller than 27", radially. 8mm diametrically. Tires are not interchangeable. If your bike is older than mid-80s, you're probably looking for 27".
Well look what the cat dragged in. Such a fine addition to the thread

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