Going to roll with Continental Race Lites.
At 70 grams they are'nt not the lightest,
but I've read great things about them and they
should pair up with my Conti GP4KS tires nicely.

Saturday, I take a look at a set of 2011 Mavic Ksyrium Elites
and just might pull the trigger on the whole package in one shot
and drop 2lbs from my 18.63lb CAAD9.

Then, I slap a set of Conti Tubes on the OEM Mavic CXP22 wheelset with a pair of grittier tires
(maybe some CX tires as big as I can fit on them) for beaters.