Oh,one more thing,what are you riding? If I was going to be riding all around the city,I'd leave my skinny-tired bikes behind. Some of the roads around here can be rough. Georgetown in particular. Potholes,ripples,cobblestones,brick sidewalks,and a couple spots even still have trolley tracks. Commuting from Cathedral to Bethesda on the Sirrus or Absolute isn't a big deal,but when I venture into the city proper,wider is better.