Originally Posted by seejohnbike

sort of...

heavier (rotating) mass will make it easier to maintain speed, however it will make acceleration and deceleration harder.

they're also heavy, flexy, not particularly aerodynamic, and untruable.

function > form. If you happen to already have them, rock them till they can't be rocked no more. If you can pick them up for a deal scrod would be proud of, a wheel's a wheel. Otherwise, there are better options out there...