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

Rear tire gone bad??

Search
Notices
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

Rear tire gone bad??

Thread Tools
 
Search this Thread
 
Old 06-27-12 | 09:31 AM
  #1  
Thread Starter
Senior Member
 
Joined: Mar 2011
Posts: 51
Likes: 0
From: Omaha, NE

Bikes: Trek 1000, Marin San Rafael, Scott CR 1 Team

Rear tire gone bad??

I've had Michelin Krylions mounted on PSIMETs for over 1 year now. Not a single flat until now.

Now, I can't keep air in the rear and I've replaced the tube 3X times with the same result. At night, tire inflated. In the morning, tire completely deflated.

The Velox rimtape appears to be in good shape, as does the rims and interior of tire.

Suggestions/possible solutions?
NebrVandal is offline  
Reply
Old 06-27-12 | 09:32 AM
  #2  
10 Wheels's Avatar
Galveston County Texas
 
Joined: Nov 2007
Posts: 33,335
Likes: 1,286
From: In The Wind

Bikes: 02 GTO, 2011 Magnum

Where is the leak on the tube?
__________________
Fred "The Real Fred"

10 Wheels is offline  
Reply
Old 06-27-12 | 09:35 AM
  #3  
ibikestickers's Avatar
Senior Member
 
Joined: Jun 2012
Posts: 52
Likes: 0

Bikes: 2010 Caad 9-4

Yes, remove the tube and inflate it to see where the leak is. That might help figure out the problem. If it's in the outer surface of the tube, there must be something in the tire causing the problem. If it's a "snakebite" type puncture, maybe you're being too rough when installing it.
ibikestickers is offline  
Reply
Old 06-27-12 | 10:02 AM
  #4  
merlinextraligh's Avatar
pan y agua
20 Anniversary
 
Joined: Aug 2005
Posts: 31,812
Likes: 1,234
From: Jacksonville

Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike

First rule of fixing flats: determine what caused the flat.
__________________
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
merlinextraligh is offline  
Reply
Old 06-27-12 | 10:05 AM
  #5  
Senior Member
 
Joined: Apr 2010
Posts: 1,430
Likes: 1
From: Fredericton, NB, Canada

Bikes: 2010 S1, 2011 F75X

Puncture on outside of tube - tire problem.
Puncture on inside of tube - rim problem.
"Slit" in tube - bead failure
simonaway427 is offline  
Reply
Old 06-27-12 | 10:07 AM
  #6  
MikeyBoyAz's Avatar
Middle-Aged Member
 
Joined: Apr 2011
Posts: 2,276
Likes: 1
From: Mesa, AZ

Bikes: Bianchi Infinito CV 2014, TREK HIFI 2011, Argon18 E-116 2013

you might have a 'Michelin wire' somewhere in the tyre. along with identifying where the hole is in the tube... turn the tyre inside out and feel along the surface for irregularities...

Last edited by MikeyBoyAz; 06-28-12 at 08:51 AM.
MikeyBoyAz is offline  
Reply
Old 06-27-12 | 03:45 PM
  #7  
Senior Member
 
Joined: Apr 2005
Posts: 10,879
Likes: 6
From: Northern California
Originally Posted by ibikestickers
Yes, remove the tube and inflate it to see where the leak is. That might help figure out the problem. If it's in the outer surface of the tube, there must be something in the tire causing the problem. If it's a "snakebite" type puncture, maybe you're being too rough when installing it.
+1. Every single time you replace a tube, figure out where the hole is in the old tube and make sure there is no continuing problem at that location.
johnny99 is offline  
Reply
Old 06-27-12 | 03:50 PM
  #8  
Homebrew01's Avatar
Super Moderator
20 Anniversary
 
Joined: Jul 2004
Posts: 21,987
Likes: 1,169
From: Ffld Cnty Connecticut

Bikes: Old Steelies I made, Old Cannondales

Run a ball of cotton around the inside of the tire. It may snag on whatever's causing the flat. Or, as suggested, you are pinching it during installation.
__________________
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.

FYI: https://www.bikeforums.net/forum-sugg...ad-please.html
Homebrew01 is offline  
Reply
Old 06-27-12 | 03:59 PM
  #9  
Senior Member
 
Joined: Oct 2008
Posts: 933
Likes: 1
Originally Posted by Homebrew01
Run a ball of cotton around the inside of the tire. It may snag on whatever's causing the flat. Or, as suggested, you are pinching it during installation.
Or your un-gloved finger (if you are on the road.)
idoru2005 is offline  
Reply
Old 06-27-12 | 06:34 PM
  #10  
Thread Starter
Senior Member
 
Joined: Mar 2011
Posts: 51
Likes: 0
From: Omaha, NE

Bikes: Trek 1000, Marin San Rafael, Scott CR 1 Team

Thank you all for your kind suggestions.

Tonight, I put 3 tubes in the dunk tank. All 3 had a pin prick leak on the INSIDE of the tube.

The Velox visually appears to be in good condition. No spokes are sticking through. I've run both a cloth & bare finger around the rim several times and no sharp points are apparent.

Thoughts?
NebrVandal is offline  
Reply
Old 06-27-12 | 06:37 PM
  #11  
Senior Member
 
Joined: Mar 2012
Posts: 4,869
Likes: 1,108
From: Tallahassee, FL
Are the holes all in the same place (relative to the stem)?
jon c. is offline  
Reply
Old 06-27-12 | 06:54 PM
  #12  
Thread Starter
Senior Member
 
Joined: Mar 2011
Posts: 51
Likes: 0
From: Omaha, NE

Bikes: Trek 1000, Marin San Rafael, Scott CR 1 Team

Originally Posted by jon c.
Are the holes all in the same place (relative to the stem)?
Yes, same relative position on the tubes.

At that position on the rim, there is no obvious reason (at least to me ) for causing a pin prick sized hole in the tube.
NebrVandal is offline  
Reply
Old 06-27-12 | 09:29 PM
  #13  
Senior Member
20 Anniversary
 
Joined: Jun 2004
Posts: 3,811
Likes: 0
From: Northern Nevada
Originally Posted by johnny99
+1. Every single time you replace a tube, figure out where the hole is in the old tube and make sure there is no continuing problem at that location.
One thing that helps with this is to install the tire so the label is aligned with the valve hole in the rim. Then when you find the puncture in the tube, you'll know where to look on the tire.
Velo Dog is offline  
Reply
Old 06-28-12 | 05:51 AM
  #14  
ahsposo's Avatar
Artificial Member
Titanium Club Membership
15 Anniversary
Community Builder
Active Streak: 30 Days
 
Joined: Jan 2010
Posts: 7,162
Likes: 7,529
From: The Cloud

Bikes: Retrospec Judd, Dahon Boardwalk, Specialized Langster

Rim tape is very inexpensive. If your holes are on the inside of the tube just replace that rim tape. It doesn't take hardly any exposed nipple bed to cause this type of puncture. I had the same problem some years ago. Really irritating.
ahsposo is offline  
Reply
Old 06-28-12 | 07:44 AM
  #15  
Thread Starter
Senior Member
 
Joined: Mar 2011
Posts: 51
Likes: 0
From: Omaha, NE

Bikes: Trek 1000, Marin San Rafael, Scott CR 1 Team

ahsposo, that sounds like a good next step.
NebrVandal is offline  
Reply
Old 06-28-12 | 09:57 AM
  #16  
dstrong's Avatar
Senior Member
Titanium Club Membership
20 Anniversary
 
Joined: Aug 2005
Posts: 4,237
Likes: 92
From: Awesome, Austin, TX

Bikes: Specialized Roubaix, Interloc Impala, ParkPre Image C6

Originally Posted by merlinextraligh
First rule of fixing flats: determine what caused the flat.
I thought the first rule of flats is you don't talk about flats.
__________________

2014 Specialized Roubaix2003 Interloc Impala2007 ParkPre Image C6 (RIP)

dstrong is offline  
Reply
Old 06-28-12 | 11:12 AM
  #17  
ahsposo's Avatar
Artificial Member
Titanium Club Membership
15 Anniversary
Community Builder
Active Streak: 30 Days
 
Joined: Jan 2010
Posts: 7,162
Likes: 7,529
From: The Cloud

Bikes: Retrospec Judd, Dahon Boardwalk, Specialized Langster

Originally Posted by dstrong
I thought the first rule of flats is you don't talk about flats.
You don't brag about not getting flats. If you're getting eaten up by them it doesn't matter.



When I saw the title to this thread this announcer voice went off in my head, "When Good tires go Bad..."
ahsposo is offline  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
HK2K13
Singlespeed & Fixed Gear
20
08-09-15 08:00 PM
lasauge
Bicycle Mechanics
2
01-26-15 06:52 AM
rojeho
Bicycle Mechanics
6
08-12-12 07:38 PM
Tony Pham
Bicycle Mechanics
6
11-01-10 05:00 PM
gemlagman
Bicycle Mechanics
10
10-29-10 04:35 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.