Join Date: Jul 2008
Location: Grid Reference, SK
Bikes: I never learned to ride a bike. It is my deepest shame.
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Keep the DA/Mavic wheels ... no question.
Some Bontrager wheels have a pretty poor reputation for durability, but this is not my primary reason for this reccomendation...
Provided they are properly built and maintained, the DA/Mavic wheels will be stronger, stiffer, and roll smoother. Your shop guy is right - rebuild you DA hubs (possibly replace the bearings with new high quality ones if necessary) and they will roll smoother. IMHO, the friction from a hub when a bike is being ridden does not directly correspond to the unloaded spin-down time of a wheel off the bike. Sealed bearings tend to take forever to stop spinning compared to adjustable cup-and-cone bearings, but cup and cone wheels are generally faster on the road... which is why Shimano's and Campagnolo's best wheels always have cup-and-cone.
Plus a standard hand laced wheel can be fixed in any shop by any tech with the correct length spoke.