Was a good commute, 52* and sunny ... half way to work when I noticed my rear tire was a little soft ... starting on the downhill side of a pedestrian overpass that I can reach speeds of 30 mph. So I walked the bike down the overpass and proceded to patch the tube (roadside assistant was home getting ready for work) after 15 minutes was back on the road. Looking forward to the ride home, sunshine low 70's and will take the long way home (12.5 miles).