Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

A tube size question...

Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

A tube size question...

Old 07-06-05, 10:09 PM
Senior Member
Thread Starter
Dougmt's Avatar
Join Date: Dec 2002
Location: Middle of Montana
Posts: 467

Bikes: 1996 Specialized Stumpjumper

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
A tube size question...

I don't know two-hoots about road tubes but I'm selling a few that I do have and a buyer has a question regarding the size.
The ones I have are700x18/23c and the potential buyer uses 700x18c-25c. Would my tubes fit his application?
Dougmt is offline  
Old 07-07-05, 03:22 AM
Proud To Be An American
Join Date: Jun 2005
Location: USA
Posts: 363

Bikes: 2004 Giant Cypress SX 2006 Giant OCR 3

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
A: Yes. The 700 x 18-23c tube would be easier to install in a 700 x 18-25c tire. When pumpoed up, the 700 x 18-23c would expand inside the 700 x 18-25c tire and inflate it.
EXCALIBUR is offline  
Old 07-07-05, 10:47 AM
Senior Member
Join Date: Aug 2004
Location: San Jose, CA
Posts: 947

Bikes: Albert Eisentraut custom w/DA, Kestrel RT 700 w/Ultegra, Jamis Tangier

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The thing that you didn't mention was the size of the tire that the potential buyer uses. If the assumption is that they are using 25c, it would work, but tubes are so cheap that I wouldn't do it. If you blow up a tube outside of the tire, you'll notice that the area that does not expand proportionately to the rest of the tube is around the valve. While the rest of the tube will expand to fill the space, there will be more stress around the valve area because it's necessarily less flexible around the connection - a weak/stress point as well. Tubes are so cheap, I don't even know why anyone would bother with this vs. potential failure of the tube on the road.
Steelrider is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
02-12-15 03:07 PM
Classic & Vintage
08-18-13 05:07 PM
Classic & Vintage
07-17-09 10:20 AM
Singlespeed & Fixed Gear
07-03-09 01:48 PM
Mountain Biking
03-21-07 04:39 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.