Re: [CR] 700c vs 27 inch

Example: Events:Cirque du Cyclisme:2004

Date: Sat, 22 Jan 2011 00:38:11 -0800 (PST)
From: Peter Jourdain <>
To: glenn camus <>,
In-Reply-To: <>
Subject: Re: [CR] 700c vs 27 inch

Hi, Glenn--- I don't claim to be the world's greatest tire size expert, but I've always found Sheldon Brown's page extremely useful for comparing and contrasting tire sizes. Basically, 700c tires are 622mm diameter ISO and 27 inch are 630mm diameter ISO. (International Standard Organization). But there is much more to it than that. Sheldon explains how the letters "A", "B", "C" etc. are all delineations of various tire widths and how this variation impacts actual tire diameters, etc. Here's the link for all the details....


Peter Jourdain Whitewater, Wisconsin USA

"For here is entertainment in excelsis, the sight, the sound and the scent of things....Why cycling for joy is not the most popular passtime on earth is still a mystery to me." ---Frank J. Urry, "SALUTE TO CYCLING"

--- On Sat, 1/22/11, glenn camus wrote:

From: glenn camus <> Subject: [CR] 700c vs 27 inch To: Date: Saturday, January 22, 2011, 3:16 AM

Can somebody explain exactly what the "700" means in therms of wheel size ? and what about the c ?

Thank you
Glenn Camus
San Diego Ca