Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

26 x2 v. 1.5 - rim size matters?

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

26 x2 v. 1.5 - rim size matters?

Old 07-18-12, 12:33 PM
  #1  
RideNoCO
Senior Member
Thread Starter
 
Join Date: Jul 2011
Location: Colorado, USA
Posts: 79
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
26 x2 v. 1.5 - rim size matters?

I bought a used older mountain bike for the kids to tool around on (rather than trash my nice Stumpjumper).
The only thing wrong with it was that the tires are rotted. Having a spare set of 26 x 2.0 mountain bike tires, I was going to swap them out. Behold, I pay attention and look at the tires on the old guy, and they're 1.5".
No biggie, however, the rim itself is labeled 1.5", which I've never seen, so I get out the tape measure and compare with the more modern rim. The modern rim is about 1" across (I'm sure someone knows the exact spec., I dunno how they measure the width) and the old rim is about 0.8". I think the 26 x2.0 mountain tire will fit, but might be a little "loose".
So, question is: will it fit? If not, how safe/unsafe would it be to put it on anyway?
Alternative is I could go just buy some 1.5 tires but I like to recycle and the spare 2.0's are just sitting.
Thanks!
RideNoCO is offline  
Old 07-18-12, 01:13 PM
  #2  
dabac
Senior Member
 
Join Date: Mar 2008
Posts: 7,936
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 813 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Tire vs rim width is a rather forgiving interface, you should be OK. Read here for more. Scroll down maybe 3/4ths.
dabac is offline  
Old 07-18-12, 01:31 PM
  #3  
RideNoCO
Senior Member
Thread Starter
 
Join Date: Jul 2011
Location: Colorado, USA
Posts: 79
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by dabac View Post
Tire vs rim width is a rather forgiving interface, you should be OK. Read here for more. Scroll down maybe 3/4ths.
Ah ha, very good stuff, thanks,
Appears I didn't know it, but was speaking of "outer rim width". According to my crude measurement, I have about 20mm to play with and the chart seems to indicate that's plenty.
RideNoCO is offline  
Old 07-18-12, 02:06 PM
  #4  
Lord Chaos
Senior Member
 
Join Date: Aug 2009
Posts: 239
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You'll be fine. In the old days, people used wider rims. Now, in the quest for lightness, they'll put 2.3" tires on a 19mm (inside width) rim. This changes the profile of the tire somewhat: the 2.3" tire becomes something like a 2.2". It seems to me that tire manufacturers should state the rim width their tires are designed and specified for.
Lord Chaos is offline  
Old 07-18-12, 03:20 PM
  #5  
RideNoCO
Senior Member
Thread Starter
 
Join Date: Jul 2011
Location: Colorado, USA
Posts: 79
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Lord Chaos View Post
You'll be fine. In the old days, people used wider rims. Now, in the quest for lightness, they'll put 2.3" tires on a 19mm (inside width) rim. This changes the profile of the tire somewhat: the 2.3" tire becomes something like a 2.2". It seems to me that tire manufacturers should state the rim width their tires are designed and specified for.
Yeah, good point, in this case, the older one is actually smaller. I would have guessed a larger one on the old guy (for reason you mention, weight, and for cost reduction). Thanks, guys, good discussion!
RideNoCO is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fishdog
Great Lakes
0
02-21-10 05:52 PM
driuseppe
Cyclocross Racing
6
06-21-08 10:32 PM
Elvish Legion
Road Cycling
19
10-04-05 03:04 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.