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700c and 27 1 1/4 - are these not the same ?!(5 posts)

700c and 27 1 1/4 - are these not the same ?!rubrduk
Jan 5, 2002 5:57 PM
anyone?
Yes, rubrduk, they're not the same.guido
Jan 5, 2002 6:40 PM
27 1/4" rims are slightly larger than 700C rims. Although the tire roll-outs might be the same, a 27 1/4" tire will not fit on a 700C rim, and vice-versa.
many thanksrubrduk
Jan 5, 2002 6:43 PM
nm
You're welcome!guido
Jan 5, 2002 6:50 PM
And I meant to say 27 x 1 and 1/4 inch, sorry! I think even the English, who stuck to the 27" standard, have finally gone over to 700C. Don't know who still uses the 27" standard. Comments anyone?
No, they are differentRusty McNasty
Jan 6, 2002 8:04 AM
the 27" tire rim sits on a 630mm rim, whereas the 700c tire sits on a 622mm rim.
The "27 inch" tire was designed to fit between the OLD 26" (584?mm rim)used on middleweight bikes, and the 28" (635mm rim)used on big old roadsters.
There are a few places where bikes still use the 28" tire/635mm rim combination (China, India, and maybe still in Holland), but the 27"/630mm standard is dead.