Had a scare last week:
https://www.facebook.com/photo.php?f...9&l=8d62de25d2
THANK GOD that it was a short screw and just got caught in the treads and I caught it as it make a clicking noise backing out of the driveway...
But actually, if there's some notoriety to the shop's name chances are they won't patch it, but a mom-and-pop shop won't give you much BS... But it's all at the discretion of the shop either way, and from what I read on the subject matter last week, it's safe as long as it's not in the sidewall.