Pound for pound, aluminum alloy wheels are stronger and lighter than steel in the same size. Any time you can decrease the rolling (unsprung) weight of your vehicle, you potentially increase braking effectiveness and reduce wear and tear on suspension components. Any vehicle weight reduction also goes a long way towards improving fuel economy. Both of these factors alone are a definite plus in winter weather. Aluminum alloy wheels also enhance the appearance of your vehicle and are sized to precise standards to meet exact fitment and performance needs. For a comparison of alloy and steel wheels, read "Alloy vs. Steel Wheels in Winter Tire & Wheel Packages."
A great alloy wheel for use in the winter is the Sport Edition A7. It is a gravity cast, anodized aluminum alloy wheel that is primed, powder coated silver with a clear finish coat. The simple casting process keeps cost down and the finish is very resilient against the harsh conditions that winter has to offer. The slightly angled open spoke design stays cleaner and less susceptible to ice and snow build-up.
The Sport Edition A7 comes in over 50 different fitments in 15" through 18" sizes with some sizes available in a new black finish. The Sport Edition A7 is "hub centric" for many BMW and Subaru applications. This can really simplify seasonal change-out without the need for centering rings that can get lost or damaged. BMW owners will find in many cases that they can use their O.E. center cap to add additional curb appeal.
For a sturdy, clean looking, low cost alternative to plain black steel wheels, pick the Winter Wonder Wheel, Sport Edition A7.