Killa, slicks are drag radials are meant for track use, and track use ONLY. Otherwise, your going to be slipping around the road like a wet seal. Where do you live, and how much snowfall is there?
I would honestly recommend that you not drive in the snow with your mustang. Even if you have snow tires, you are going to need chains. Ideally, you should have a AWD truck with snow tires if you live in harsh winter conditions.
You can have the best snow tires on the market, and STILL need chains on your mustang to safely drive, if the roads are snowy/icy. I know in CA, chains are required by law in snowy conditions (for cars that aren't AWD or 4X4).
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