Stefnwolf
Forum Apprentice
You could have just been really unlucky, and the fitter did not check the tyre properly for anything sticking through. A thorn projecting 25 thou into the carcass can cause this.
Is the rim rusty? A flake of rust could do this, and may even stay in the tyre and get "refitted" with the new tube, or maybe he just pinched the tube on the way in.
One thing for sure, it will only get worse, so do not attempt to ride on it.
Remove the wheel, pump it up to 50 psi, then put the whole rim upright in a trough of water, deep enough so water covers the tyre and a few spoke holes. Turn it round bit by bit until you see the bubbles.
Mark the place (on tyre and rim) and you know where to examine minutely when you remove the tyre.
Throw the tube, don't repair it.
Is the rim rusty? A flake of rust could do this, and may even stay in the tyre and get "refitted" with the new tube, or maybe he just pinched the tube on the way in.
One thing for sure, it will only get worse, so do not attempt to ride on it.
Remove the wheel, pump it up to 50 psi, then put the whole rim upright in a trough of water, deep enough so water covers the tyre and a few spoke holes. Turn it round bit by bit until you see the bubbles.
Mark the place (on tyre and rim) and you know where to examine minutely when you remove the tyre.
Throw the tube, don't repair it.
