The bottom of the tire is going 0 so it pretty much cancels out.
Jan Heine stated in an article that fenders over the top of the tire confer an aero benefit but I’m not going to Google it right now.
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."