putting snow tyres on the driving wheels makes a huge difference, only thing you have to watch is the back end will wanna step out easy in snow, but if your driving that fast on snow you want your head looking at.
something like this?
http://www.ebay.co.uk/itm/4-2055516...39250?pt=UK_Cars_Tyres_RL&hash=item2a156aadb2
or is the speed rating to low?
How fast do you plan on travelling in the snow?
]LOL @ 1 on opposite corners, (front left, back right) are you serious?