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Rear tire gone bad??

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Rear tire gone bad??

Old 06-27-12, 09:31 AM
  #1  
NebrVandal
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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?
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Old 06-27-12, 09:32 AM
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Where is the leak on the tube?
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Old 06-27-12, 09:35 AM
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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.
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Old 06-27-12, 10:02 AM
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First rule of fixing flats: determine what caused the flat.
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Old 06-27-12, 10:05 AM
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Puncture on outside of tube - tire problem.
Puncture on inside of tube - rim problem.
"Slit" in tube - bead failure
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Old 06-27-12, 10:07 AM
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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.
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Old 06-27-12, 03:45 PM
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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.
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Old 06-27-12, 03:50 PM
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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.
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Old 06-27-12, 03:59 PM
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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.)
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Old 06-27-12, 06:34 PM
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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?
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Old 06-27-12, 06:37 PM
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Are the holes all in the same place (relative to the stem)?
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Old 06-27-12, 06:54 PM
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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.
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Old 06-27-12, 09:29 PM
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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.
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Old 06-28-12, 05:51 AM
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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.
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Old 06-28-12, 07:44 AM
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ahsposo, that sounds like a good next step.
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Old 06-28-12, 09:57 AM
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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.
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Old 06-28-12, 11:12 AM
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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..."
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