Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-24-04, 02:11 PM   #1
markm109
Senior Member
Thread Starter
 
markm109's Avatar
 
Join Date: Oct 2003
Location: SE Michigan
Bikes: '03 Litespeed Blue Ridge; '04 Litespeed Solarno; '12 VooDoo Nakasi
Posts: 290
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Air pressure - problem if over inflate mtb tires?

I just put some Kenda 26x2.1 tires on my mtb, the knobbies were wearing out. These have tread, but smoother for the road.

On the side of the tire it says max pressure 40psi. That seems low to me, the tires I took off had a max of 65psi. I rode the bike with 42psi in them and they seemed ok, but just a touch mushy.

If I inflate to 50 or 60 (and the tire doesn't pop ) would this damage tire or make it wear out faster?

Mark
markm109 is offline   Reply With Quote
Old 06-24-04, 04:03 PM   #2
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,614
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Quote:
Originally Posted by markm109
I just put some Kenda 26x2.1 tires on my mtb, the knobbies were wearing out. These have tread, but smoother for the road.

On the side of the tire it says max pressure 40psi. That seems low to me, the tires I took off had a max of 65psi. I rode the bike with 42psi in them and they seemed ok, but just a touch mushy.

If I inflate to 50 or 60 (and the tire doesn't pop ) would this damage tire or make it wear out faster?

Mark
Depends.

Good quality modern tires and good quality modern rims have a "hook bead" interface that makes it possible to use relatively high air pressure without blowing the tire off of the rim. Few people have the expertise to tell by looking if their tires and rims have this design. Frankly, 40psi sounds like a pre-hook bead specification to me.

Now I have no way of knowing why Kenda thinks that 40psi is the right maximum pressure to recommend on the sidewall. They might be being conservative in the event that somebody would install, and subsequently blow off, the tire from a non-hook-bead rim. They might have had a frequency of customers blowing tires off of their rims and successfully sueing Kenda. I'm not in a position to know. I doubt many other posters will have that kind of inside knowledge either.

What I do know is that if you exceed their maximum inflation recommendation you might be all right, but you will certainly be on your own.
Retro Grouch is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 06:08 AM.