Pretty nice ride in today, tailwind for 2/3s of the ride, not too cold with some light visible through big clouds. I cleaned my bike over the weekend and changed out both tires for lighter thinner ones and I could feel the change. Alas though I received another rear flat tire right before the end of the commute. A pinch flat seems the most likely as I had just put in a new tube. But it is odd that it occurred in the same place as last week and not during my shakedown ride after I put them in yesterday.