I bought a set of wheels for one of my bikes, Orbea MD 30.I no not know the difference ln weights,but I am pretty sure the new ones feel considerably lighter when I handle them. The big advantage for me is having 2 wheels sets with very different tires mounted on them. One is for clear, clean good pavement and the other is for wet, snowy not clean, not smooth pavement. I can just switch the wheels and not dismount/mount tires. I also have two bikes I can use those wheels on. I have a lot of options with minimal time and effort to make the change. I like that!