Okay, as I am sure most of us are aware...on our bikes we have options for wheels - size and style. Specifically, you can use 650 Tubulars, 650C, 700 Tubulars or 700C.....

Who knows (other that me of course) what the "C" stands for?

Hint...it is not "Clincher"

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What if the Hokey Pokey is what it is all about?
I always assumed it refered to the width of the tire where it meets the wheel. Am I close?
Kinda...there were also "A" and "B" tires too.

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What if the Hokey Pokey is what it is all about?
i always thought it stood for centimeters, or cc or something like that...diameter of the wheel, circumference? dont know.

"Anyone can work hard when they want to; Champions do it when they don't."
It is the diameter of the wheel/tire combo in mm. Back in the day when this terminology was coined, they used much larger diameter tires, 27.56in to be specific. If you convert that to mm (mult by 25.4) you get 700. It persists today even though our typical 700x23c tire diameter is 26.2in. Sorta like the older folks calling all refrigerators "Frigidaires".

vo2"toyoutoo"
cubic centimeters?
coconut

campagnolo

cocoa

circumfrence

C stands for can't you telll us the answer?
Great question! I just read Sheldon Brown's article on bike tire sizing (http://www.sheldonbrown.com/...ing.html#traditional) and this is still the best guess I can make. Is it a carry-over from the French sizing system. "A" being narrow and "D" being wide?
can't be centimeters :-))
that would be a 7meter diameter wheel (around 8yards for the metric challenged)
that's a hell of a wheel you have...
so what does it stand for?
The number refers to the approximate outside diameter of the tire, in millimeters. The "C" indicates that it has an inside (or bead-seat) diameter of 622mm. In Europe, there are also tires with "A" and "B" inside diameters, but bikes using these sizes are not generally available in North America.
"

The number refers to the approximate outside diameter of the tire, in millimeters. The "C" indicates that it has an inside (or bead-seat) diameter of 622mm. In Europe, there are also tires with "A" and "B" inside diameters, but bikes using these sizes are not generally available in North America." I just learned something new. Thanks.