Originally Posted by
dalava
I commute to work everyday. For the same effort I feel I am putting out (sometime with a PowerTap to measure so I know I am pretty close to my normal average), I am definitely slower in winter than summer, like about .5-1 mph slower. What's going on?
There's some debate (especially over in the Winter Cycling forum) if it is ...
-- the tire pressure
-- cold bicycle lubrication
-- the extra layers of clothing constricting movement
-- air density
-- road conditions
It would be interesting to see a segment on this topic on Mythbusters ... is it really air density or are there other factors at work?