Originally Posted by Jean_TX

I have the Shimano RS81 C24 wheels. I got them to replace the stock Mavic CXP22’s on my 2011 Specialized Ruby Elite bike. I have never weighed either set, but manufacturer specs and web forum postings indicate that the RS81’s weigh 1550g and the Mavics weigh about 2200g. My observations/perceptions:

* The RS81’s have exceptionally smooth hubs and the “digital hub adjustment” feature (ie, no tools are needed) is really convenient and it takes minimal time to adjust the hubs.

* The RS81 wheels (16/20 laced, double bladed aero spokes) definitely feel stiffer and more sure-tracking when cornering than the Mavics (28/32 laced, straight 15G spokes).

* My typical riding route has umpteen stops and turns. The RS81’s accelerate from stops more easily. They also seem to be slightly easier to roll going up hills.