I checked the Tire Rack and the 19'* were expensive, but not THAT bad. Maybe the sticker shock from buying 18'* is making me less sensitive to the pricing. Looks like replicating the wheel and tire package from the concept would run about $1500 +.
I love the grills. Looks much more high end than the black plastic ones on the production version.
And, for what it is worth, I think 20'* will handle worse than 19'* or 18'*. Much more unsprung weight, I would guess. And sidewall flex is not always a bad thing. Flex in the sidewalls allows the steering to talk to you more as the tire approaches the limits of its adhesion.
2004 Bonneville GXP - Greystone