Thanks for the great information. However, what am really looking for is a narrower tire to run in the snow, a wheel that fits over the larger brakes on the GXP and can accommodate a narrower tire and has the same or close to the same rolling radius. I do not want the same size wheel, I'm looking ...

I have a 2005 Bonneville GXP and would like to find alternative wheels and tires to drive the car in the Minnesota winters. Any suggestions, specifically the type of wheel that will work while maintaining steering geometry, rolling radius, etc.? I would like to find a similar looking alloy wheel if ...