Originally Posted by
AdamDZ
I also ride in NYC and use puncture resistant tires and I get maybe one flat a year if even. I had a really bad luck in March though, I had three flats in one month! But as always, the first flat was caused by a legit reason and the remaining two by stupidity: I didn't examine the tire well, and there was a tiny piece of hair-thin wire in the tire that caused the following two slow-leak flats.
Also, the flats seem to more likely to happen on lousy, wet and cold days 
That makes two of us. Most of my flats occurs in the winter. The street Sweeper sweep the street less during the winter months. All those roadside broken glass and debris ends up in the Bike lanes. During the summer months, I can see a difference in the amount of junk in the Bike Lane the day before and the day after the street are swept.