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Tire and Tube size question. (Im new to this)

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Tire and Tube size question. (Im new to this)

Old 11-18-08, 12:09 PM
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vledaD
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Tire and Tube size question. (Im new to this)

Ive done some searching but i still have a question regarding tire sizes and corresponding tube sizes for my fuji with 27" rims.

Ok so I need new tires and tubes, and i'm planning on buying them from perfomancebike.com because i also need to get some other things and the prices are good.

Here is the tire i found that i like.: Forte GT2 Kevlar.

It comes in two sizes, 27/1 and 27/1 14. I assume it means 1 1/4'th. The tires im replacing i believe are 27/1 1/4.

Now i wanted a slimmer tire like a 27/1 1/8 but they dont have it. Is the 27/1 too skinny? I'm getting a 3 pack of 700x28-32 tubes. Would this tube be too small for the 27/1?

Would a 700x 19-26 tube fit? i have one of those lying around.
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Old 11-18-08, 12:54 PM
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Wrong size tube. You can buy 27 inch tubes from many suppliers. I get mine from Pricepoint, they run sales: five tubes for $9.99

And the GT Kevlar will not work if you have unhooked rims. You will need a wire bead tire (unless the GT kevlar has a wire bead). Niagara Cycle sells several wire beaded 27 inch tires for under $10.
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Old 11-18-08, 01:58 PM
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vledaD
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It says Bead: wire. So yea the forte is a wire bead. Why wont the tubes work? thats the size i had in my current tires.
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Old 11-18-08, 03:13 PM
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Originally Posted by vledaD View Post
It says Bead: wire. So yea the forte is a wire bead. Why wont the tubes work? thats the size i had in my current tires.
It's a pain to stretch it in there and get it changed. It works, but when you enter your bike at the concourse they'll knock you down a couple points for that. Last time I ordered 27's they sent me 700s anyway. What's this world coming to?
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Old 11-18-08, 03:42 PM
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Originally Posted by vledaD View Post
Ive done some searching but i still have a question regarding tire sizes and corresponding tube sizes for my fuji with 27" rims.

Ok so I need new tires and tubes, and i'm planning on buying them from perfomancebike.com because i also need to get some other things and the prices are good.

Here is the tire i found that i like.: Forte GT2 Kevlar.

It comes in two sizes, 27/1 and 27/1 14. I assume it means 1 1/4'th. The tires im replacing i believe are 27/1 1/4.

Now i wanted a slimmer tire like a 27/1 1/8 but they dont have it. Is the 27/1 too skinny? I'm getting a 3 pack of 700x28-32 tubes. Would this tube be too small for the 27/1?

Would a 700x 19-26 tube fit? i have one of those lying around.
Check to see if your rims are marked with a width. They're probably 1 1/4, and if so, I would definitely advise against going with the 1" Fortes.

Most road tubes I buy are marked for use with both 27 and 700c tires. I generally use a tube marked for 23-25 width. They expand into a larger size while still being able to fit a narrower width, so your 700c tube should fit fine. But again, if you can't find the Forte 1 1/8" width (which I have seen in my local Performance shop), I'd personally go with the 1 1/4" size unless you have pretty narrow rims.
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Old 11-18-08, 09:11 PM
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yea im not planning on entering any concourse shows. I just need to have a running dependable bike. Why do you, epicurean, think that 23-25 is better tube as opposed to 28-32? Again im new to this so i'm trying to learn as much as possible.

Thank you,-Vlad
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Old 11-18-08, 09:42 PM
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Originally Posted by vledaD View Post
yea im not planning on entering any concourse shows. I just need to have a running dependable bike. Why do you, epicurean, think that 23-25 is better tube as opposed to 28-32? Again im new to this so i'm trying to learn as much as possible.

Thank you,-Vlad
28-32 is huge. Those are for 'cross tires and stuff.
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Old 11-18-08, 09:56 PM
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Having limited choices currently, I use 28 - 47C inner-tubes in my 700X28C tires. They work fine. They are marked (on the box) as also being for 28/27 X 1-1/8 - 1.75 X 2. These are Continentals.
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Old 11-18-08, 09:57 PM
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ok, i found an ebay store that sells mainly tubes and tires, and they have a great deal on true 27" tubes, ima get those.

Thanks everyone for the input.
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Old 11-19-08, 01:33 AM
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Originally Posted by Exit. View Post
28-32 is huge. Those are for 'cross tires and stuff.
A 27x 1-1/4" is ALSO known as a 630-32!
A 700C-28/32 aka 622-28/32 tube would be a better fit than something smaller. It's still a bit undersized for a 27" rim, but not by much.
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Old 11-19-08, 06:14 AM
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I think the issue is the tube width, not the diameter. Stuffing a 28-32mm tube inside a 1 inch (25mm) tire could pinch the tube and cause a flat. 27 inch and 700 tubes are interchangable, if the widths are compatable. Once, I even found a 26x1 3/8 tube inside a 27x1 1/4 tire (590mm vs. 630mm). The funny thing is that I didn't notice the size stamped on the tube until after it had been repaired and remounted on the rim a couple times. So, tubes will stretch to fill a space, but they won't squish down into a smaller space very well.
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Old 11-19-08, 06:19 AM
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Esteban32696
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This is a good 1 1/8" http://www.bicycletires.com/bicycle_tires.asp
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Old 11-19-08, 08:26 AM
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Actually, 1 1/8 is extremely close to 29mm. The 28 will be fine for 1 1/8 and 1 1/4 (my preferred), but the smaller tube will be better for the 1" if you choose to go that route.

Keep in mind, that the 1" will be more prone to pinch flatting, and ride harder.....
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