You can research a little on using 100% nitrogen instead of air in your tires. Aluminum rims, in my experience, tends to cause issues in the winter.
In any case, here is a tidbit on nitrogen. Read about it, talk with your shop about it, and if you decide to go ahead with it, report back and let us know if it actually helped:
http://www.popularmechanics.com/cars/how-to/a3894/4302788/
Or, maybe somebody has tried it and can pipe in ...