This is probably the biggest waste of forum space I have seen since I've been here, and there have been some pretty stupid posts. Its nothing personal, mind you, but if you bought a CTS-V then quit complaining that you wish you had 5-lugs and "more" wheel options. Sack up and buy some rims. If you want to complain about something then go with something standard like diff whine or wheel hop . There are tons of options out there in the $4000 range. Check out Makaveli Wheels (they made custom offset and bolt pattern wheels for my V by the way).
With 5 lug, there are many aftermarket wheels available that are "business", not rice. OZ(the CTS-VR wheel), Volk, SSR(the ultralight wheel), BBS, and the list goes on...including companies that make pure "race" wheels custom for your application.
OZ: Some rice wheels, some blink-blink wheels, some might work on the V, i.e. O.Z. Superleggera III - 19x9's go for $860 (tirerack) And the CTS-VR wheel is a custom wheel which is 12" wide!
Volk: All Rice
BBS: Some really nice wheels, i.e. RGR - 18x9.5's go for $738 (tirerack)
SSR Comps: Beautiful wheel, track wheels for my last two cars... looks great on rice, and the M3... not sure how good it would look on the V. 18x9=$499, 19x9.5=$629. Googled for almost an hour, couldn't find an offset that would work on the V... didn't even try to find the hub-centering ring.
Volks are rice?.... You are entitled to your opinion.
I wouldn't put 19s on the V. I'm not looking to go bigger rotors, so to me it'd be a waste of money. Going to a 19 would only add weight and significant cost, not to mention difficulty with tire choices (this is getting better, though). If I could, I'd run 17"wheels.
The SSR Comps at $500 would be perfect. I'm sure they would look as good as they do on other cars....Or the GT2s, 18X8.5=$428
Superleggera III's, you've got some expensive tastes....there are other choices...
I may not have explained myself correctly, so please give me another opportunity to convey my proper thoughts....
A 19" wheel will weigh more than the same manufacturer/model's 18" wheel. The SSR Comp 19s will weigh more than the SSR Comp 18s. I did not mean to imply that every 19" wheel will weigh more than the stockers.
There is also the physics of a larger wheel having a higher MOI, moment of inertia...long story short, the greater the distance from the center of the hub...the greater the momentum of the wheel. So, even though a wheel may weigh the same as the smaller one, it will still resist braking/turning/acceleration more than the smaller wheel. There is also the topic of where the weight resides...more weight on the lip or more weight on the center, closer to the hub.
I looked at your wheels on the net, they are beautiful...really, but they're not my particular style. Take a look at the SSR Comps, in gunmetal, and you'll see what my particular taste prefers. They're not the most flashy rims but they are a "business" rim. If I couldn't have the Comps, I'd do the GT2s by SSR, I like those plenty. Just my taste...