Originally Posted by
geneg
Took a picture of my patched tubes based on your advice....almost the same spot, all 4 tubes. Tried to post it, but did not have 10 post to qualify for posting. Any trick here?
Anyway, went thru the tire and the rim, nothing to be found. No puncture marks on the tire no inside neither inside.
Look close at the rim tape, if it's not glued down, is there any gap where the spoke hole edge is not completely covered by the tape - can the tape move?
If the holes/patches are approx half way around tube from the valve, check the rim joint for any non-smooth area, a very tiny rough spot will eventually cause a puncture. If you can 'feel' it with your fingernail, it's too rough.
However far around the tube the spot is, relative to valve, check the rim at equal/equivalent distance both ways around rim from spot hole.
For future, when mounting a tire (and using any rotation designation on tire), line up the primary Tire Labeling with either the valve or the rim joint - be consistent.
I also place a small piece of masking/painters tape on the tube near the valve, to the right/leading side of the rotation - this quickly lets me determine how the tube sat in the tire/rim in use.
This assures that all 3 elements, rim/tube/tire, are always in same relationship in use and allows you to find chronic problems much easier...
Ride On
Yuri