Bicycle TutorBicycle Tutor

Show off your bike!

Post Reply 

Size of a 700c tire

Related video tutorials:
Author Message
nameused Offline
Senior Member

Sacramento, California
Posts: 189
Joined: Oct 2010
Post: #1
Size of a 700c tire
Ok, so I have a friend with a road bike, and his tire blew out (the tire actually has a large gaping hole in it) along with the tube. Now we figured this might be a 26" tire so we went and bought one of those and tried it, but it was too small. So we thought it must be a 27" tire, but that tire was too big. So I went looking online and figured it must be a 700c tire which is between a 26" and a 27". The problem I'm having is that the old tube inside was a 27" x 1/4" and the old tire didn't have any markings on it to show what size it was. The same is true with the front tire and tube. So the problem I have is that I'm not 100% sure it's a 700c tire (more of a mountain bike guy myself) and I'm not sure which width I should get as there seems to be a lot of them. Any help is appreciated.

Here's pictures of his bike if they help any.
edit: you can see where the tire eventually ripped through in this picture its on the left side of the back tire. The lighter patch that looks kind of stretched.
Mar 19, 2011 03:40 AM
Visit this user's website Find all posts by this user Quote this message in a reply
RBurrelli Offline
Senior Member

Posts: 184
Joined: Jul 2010
Post: #2
RE: Size of a 700c tire
a quick search on Google revealed this...

Attached File(s) Thumbnail(s)
Mar 19, 2011 06:36 AM
Find all posts by this user Quote this message in a reply
Tim M Offline

Posts: 53
Joined: Feb 2011
Post: #3
RE: Size of a 700c tire
Forget the old tube. I have a hunch the correct tire is 700cm. Look at the tire for some molded lettering something like 38-622. The key is, if you find 622 then it is a 700cm tire. xx-622 is the ISO designation where 622 is the BSD for a 700cm and xx is the width. If you look for "700" molded on the tire, you won't find it.

It's confusing. two presentations, including width issues:

This may also be a good time to check the rim tape and check for spoke problems.
Mar 19, 2011 09:07 AM
Find all posts by this user Quote this message in a reply
Post Reply 

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Mongoose shaky back tire joseph wolf man 7 200 Jan 19, 2015 09:56 AM
Last Post: joseph wolf man
  Tire Size JBinNC 6 438 Jan 8, 2015 09:09 AM
Last Post: 1FJEF
  Some tire/tube questions garrett01 7 381 Dec 31, 2014 06:38 AM
Last Post: cny-man
  Is it time to replace my tire? dave_sd 7 5,377 Nov 6, 2014 05:59 AM
Last Post: JanJ
  Bulge in tire - please help! miyata 1 661 Oct 13, 2014 07:11 AM
Last Post: cny-man
  Slice in tire? !TREK4ME! 2 1,113 Oct 4, 2014 06:38 PM
Last Post: !TREK4ME!
  Continental Tire and Tube Terminology barrystv 2 910 Sep 15, 2014 09:45 AM
Last Post: barrystv
  Odd size...odd problem hburkhardt 9 3,395 Aug 31, 2014 08:02 PM
Last Post: 1FJEF
  700c tyres, width advice tigerssteve 5 1,687 Aug 7, 2014 06:23 AM
Last Post: cny-man
  Tire Question donna 2 1,239 Mar 17, 2014 01:16 AM
Last Post: donna

Forum Jump:

RSS Forum RSS Feeds / Powered by MyBB

ISSN 1918-3445 © Copyright 2007-2010 Bicycle Tutor / Privacy Policy