In the cold:
-grease gets thicker
-tire rubber gets harder
-The air pressure in your tires goes down
-Your muscles are stiff
Of these, I suspect that only the last two are at all significant. And, mainly the last one.
Biking in the winter is a noble art, keep fighting.
jim
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Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
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SB forever