Originally Posted by
3kmi
Having a light set of wheels with a good set of bearings helps with acceleration and maintaining speed. Anecdotally (I know its not a word), putting on a pair of Zipp 404 clinchers, which weigh approximately 200 grams more than the EA90 aeros I use, upped my average speed by 2mph consistently over my usual 20 mile loop.
I am not calling you a liar but I highly doubt changing wheels alone will increase your average speed by 2mph. There must be some placebo effect or something else going on.
I would believe 0.2MPH but not 2MPH.