Originally Posted by
waterrockets
rotational weight from wheels, between the lightest wheels available and standard training-duty wheels, in a climb costs you on the order of 0.01% (one-hundredth of a pct). The raw, static weight is much more impactful, and it's still not enough of a difference make up for the value of the power data.
Rotational weight's impact on cycling is a huge (annoying) myth.
Don't forget this is hub weight, not rim weight, too. I could do the calculations, but let's just say it matters much, much, much less.