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Old 08-24-11, 09:53 PM   #1
Ghost Ryder
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Tube/Tire question.

Noob question...
I'm really only familiar with tires 20"- 26" on BMX/Muscle bikes & 27" on Vintage road bikes.
I've just recently taken an interest in road bikes, since all my bikes were tanks.
It's about time I got a "Big Boys bike".

Can I use a 27" tubes with a 700C tire?
I'm into older bikes(69,77,80,84) & have stock piled old parts for my old bikes.
I want to get into newer rims, & sourced a pair locally.
Just got a track frame & will use 700c rims & tires.

If I could use this tube this would save me a trip to the LBS, & I'll ride with the new rims since I always carry my tools.

Sorry if this question has been asked to death before.
I did do a search but most post or banter about how 700c tires will not fit, I already know that much.
I've been told 700c tubes will work with my older 27" rims, so I'm wondering if this work the other way around?


Thanks guys.

PS:
Love this site!!!
It's helped me substantially with getting to know about bikes other than BMX.
Who would have thought an old "BMX'r dog" could learn new tricks.

Last edited by Ghost Ryder; 08-25-11 at 04:15 AM.
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Old 08-25-11, 02:09 AM   #2
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Originally Posted by Ratrod BMXr View Post
Can I use a 27" tubes with a 700C tire?
Oh, sure, not a problem. It's real common for each tube to cover a couple of tire dimensions anyhow, the small change between 622 and 630 mm won't faze it. Getting it "just right" can make for somewhat easier tire fitting though.
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Old 08-25-11, 04:22 AM   #3
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I'll give it a try @ home then, if I have a hard time, I'll just pick up 700c tube
Thanks for the reply.
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Old 08-25-11, 04:25 AM   #4
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Wider 700c and 27 inch tubes are virtually the same size and are interchangeable... if you are running narrower 700c tyres (23-25mm) the fit with a 27 inch tube could be a little problematic.

With 700:35 and up tyres a 27 inch tube will usually be a very nice fit although they usually come with Shraeder valves and you may need a Presta.
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Old 08-25-11, 04:48 AM   #5
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The tubes in question do have presta valves.
Does this mean that they might work with narrow tires, or might they even be 700c tubes?
Would there be any tell tale signs on the tubes?
The tires are 700c x 23 I think.

Thanks for your reply.
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Old 08-25-11, 06:20 AM   #6
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Originally Posted by Ratrod BMXr View Post
..Does this mean that they might work with narrow tires,...
There's no doubt that they will "work", meaning they won't cause the bike/tire to fall apart or anything. But if you have a tube that's a tad too large, some of that excess rubber will be really intent on getting jammed between tire and rim, as well as leaving less place for the bead when getting the tire back on.
Spend a little longer on getting the tire mounted and you should be OK.
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Old 08-25-11, 06:36 AM   #7
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Will do, I'll make sure the tube leaves enough space for the bead.
Thanks again dabac!
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