[QUOTE 4527600, member: 9609"]so your peddling along and you hear 'click click click click' from the tyre as it spins round, on inspection you find the blunt end of a hawthorne thorn stuck in the tyre, the tyre is still inflated and their is no hissing sound It seems well and truly embedded and a gentle tug aint going to shift it. - do you.
1) prise it out with the danger it is acting as a plug and the air will follow
2) leave well alone and keep your fingers crossed, the danger here being it may work its way in deep as you ride and then puncture the tyre.
I know it seems unlikely but I have had a thorn before and when removed the dreaded hissing noise starts, can it really act like a plug ?
I had this scenario for my last 20 miles this afternoon, the tyre stayed inflated - I will inspect the morrow to see if the thorn had pierced the tyre.[/QUOTE]
Anything embedded in the tyre can act as a plug, personally I'd remove it as soon as possible, but if I'm not far from home I might try and get home before I sort it.