RC:
DaveChapin:

More sporty yes. But the silver rimmed car I think looks better.  We're talking lambos and 911s here... It's not like sportiness is in short supply.

In my opinion, it doesn't. Silver = elegance. Black = sporty. This can be actually "transferred" to many other things, like watches, bathroom appliances and many other things.

Bit late on this one, but I'm gonna have to say that the reality of it all works against you here. Most exotic cars in the world use silver or grey wheels. In fact, most race cars use silver or grey wheels as well. I don't really have the figures to back it up, but I'm saying this based on how seldom I see black wheels compared to silver.

Black wheels, IMO, are a recent fad that have come with the technology of being able to have durable, nice looking painted wheels.

Also just my opinion that black wheels often look terrible and only look good on a few cars with certain exterior colors, whereas silver/grey can look good on just about any car in any color.