This weekend I plan on replacing my old, grooved stock brake rotors with nice new EBC rotors. Should I worry about balancing my wheels or should I figure on everything being just fine because I'm just replacing one circular thing with another? In theory it seems like a brake disk shouldn't change the balance of the wheel seeing as how it should have very even weight distribution, but I just want to make sure so I can plan accordingly...

if you can find any vibration, i'd be surprised. it's pretty close to centerline, compared to the mass of the tire and wheel.

Cool, thanks a bunch.