Originally Posted by
cyccommute
Done properly, a vulcanizing adhesive patch will never come off. dscheidt covers the how to well. If the patch catches on something it wasn't applied properly.
That's true but like I said, I like to use a patched tube that I know is going to work. I know I have been fooled by a tube with two holes (1 VERY small pinhole) thinking there was only one. If I hadn't installed the repaired tube at home, I would have been in for an unwelcomed visitor while attempting a roadside repair.
I feel more comfortable knowing my 2 replacements are fresh tubes.