i have the same tires, with the studs - amazing in winter! Also i found winter tires for the stock wheels but they where $829 each for rears and $549 each for fronts. Thats my cost price at my dads fountain tire in edmonton. I was able to get a wheel for a 128 bucks a wheel, 18" five spoke
http://www.formuladistributors.com/ go to new arrivels - scroll to the bottom i bought the ar8 -3181 in gun metal. My setup was 1200 all in, but i mounted and balanced my own so add another 100 bucks.