Ugh! I hate that! I was having a lot of them a couple of years ago when a lot of the homes in our neighborhood were doing renovations and additions. Lots of nails would find their way into my tires. One day I had a nail, in the sidewall no less, got it replaced as it could not be repaired only to wake up the very next morning to find another nail in the brand new tire...Grrrrrr! I was so not happy.