I heard Aluminum rims are "obsolete" now.
Allegedly, carbon fiber wheels out perform aluminum wheels as much or more than aluminum wheels out perform steel wheels.
Of course a "good" set of carbon wheels cost as much as 20 sets (or more) of good aluminum wheels.
I'll stick with the aluminum and steel wheels.
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"Whenever I see an adult riding a bicycle, I know there is hope for mankind." (H. G. Wells)