Originally Posted by
Seattle Forrest
I've tried a few times, and Zipp 303 (older, non-Firecrest) wheels feel easier to turn than Nuvations. It's not huge, but it's noticeable. I don't think it's rim weight, because they're easier to spin up, but they're also easier to keep turning.
Likely placebo. Given that environmental conditions are virtually never the same it would be very difficult to actually 'feel' a difference that you could attribute to wheels vs a 1MPH lower headwind. Maybe your riding conditions are different, but I always have wind to deal with so the power to speed relationship is always different.