Mounted new tires Sunday, which I've been riding this week (panaracer, kevlar belted and banded), but when I got to my starting point this morning front tire was flat. Ended up driving to the office. Changed the tube there. I was plenty early, and it's light and warm. Good news is it was a bad patch and I didn't get a new puncture in only 50 miles, bad news is I have to drive home.