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I think the improvement is more from a lower rolling resistanace tire than lower rotating mass. A coast-down comparison would clairify that, by rolling farther with heavier wheels at the same RR. A coast-down on smooth pavement, followed by rough pavement would further clairify the issue.
I'm surprised at the snow report - mine seem to do just fine.
Last edited by Bicycle Bob; 05-04-2010 at 08:18 PM..
Reason: add 3rd sentence
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