Originally Posted by
catgita
I also don't buy the idea that shop installed tubes don't have problems. I am far from the first to complain of tires coming unseated, bumps and dips, and flats by the time I got home. How would you know if the tube was defective or not? Pretesting outside of a tire is no guarantee. All those I suspected of defects were pretested.
If the tire comes unseated that is the installation or tire defect---not the tube.
Flats by penatrant--glass or thorns can happen at any time, again not a tube defect.
The tubes are pretested under pressure---they have great systems to detect problem tubes... I am certain there are a few bad tubes but nowhere near the number claimed by customer claimed defectives.
Having worked in the industry, we get a couple of flat tires a year that come back right after we install a new tube---we fix 1000+ flats a year.
But customer fixed flats have an amazing number and percentage of "Defective Tubes" See it blew out on the seam... See the valve stem ripped out of the tube...
There is a pretty simple solution now---just get rid of the tube and go with Stans... awesome stuff.