Rain today & only got up to 60F. I'm still trying to get over a bad cold & about 1/2 mile from the finish of my afternoon commute home, I flatted very suddenly. The rear wheel was "thumping" every rotation & I just thought it was the tube bunched up or something but when I had walked it home & went to hang the bike I saw a 2 inch drywall screw sticking out of the tread! I'll check it out this weekend & see how much damage it did. Don