Well, you won't be getting anywhere on M/T's if it's packed or icy. M/T's will only work in fresh and deep snow. They are virtually useless and downright dangerous on anything you're going to see on the road.
If you want snow tires, I would recommend getting them in a 30x9.5x15 or a 31x10.5x15 rather than a metric size. The 30x9.5x15 is the closest to the factory metric size tire. That's probably what I would get if the X is pretty much stock. If you have any lift at all they'd be fine, but look pretty freaky, so I would go with the 31 probably.
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ChuckH
"Every morning when I wake up I know it's not going to get any better 'til I go back to sleep again!" Al Bundy