Konig GT-R 15x6.5"
I originally purchased these wheels for my 1994 Honda Civic Si. The stock wheel on the '94 Si is 14" in diameter. A plus one upgrade to 15" wheels was chosen for good turn-in response, extra width for lateral traction, a good selection of tires in that size, and looks. For autocross or road racing, a 14" diameter (or even 13") but in a much wider width might be the ideal, but not practical for everyday street use. The 16" and larger sizes tend to be heavier and situate their weight further out from the axis of rotation, hurting accelleration performance. As well, the low sidewall height required with the larger wheel sizes mean the rim is quite susceptible to being dented by potholes and railway crossings. The larger sized wheels are also more expensive, as are the tires for these sizes.
The Konig GT-R features a silver painted center section with a polished lip. Black with either a red or blue lip is also available.
I run the stock 15" alloy wheels with winter tires during the snowy season.
Other than the one bent wheel, these wheels still look like new, and show almost no signs of pitting or scratches. The main reason they still look so good is that they have never been run in the winter, but keeping them clean also helps (as well as avoiding potholes).