better get some, I have 205 50 17 dunlop winter m3, it is their 5th season and they are still quite deep, anyway I'll probably throw them away after this winter, but will see whats left of them in the spring, the cost is just about 100 pounds each season... not a lot for a safe drive, could easily spend that on a night out... knowing the difference in the snow and even in the damp when its cold I would never take winter without a set of winter tyres, but hey you only live once and since playing with death has always been the most fun maybe its just stupid to get a set and live a boring life....
but
imagine you can safely drive on a snow covered highway at about 50 - 55 mph in a clio...
imagine how fast can you drive on a snow covered highway without winter tires....
I am not saying that you should or would be able to drive that fast with all the other cars around, but the grip the winter tire provides allows you to do it, now what levels of grip does your summer tire offer in the cold??? could you go safely 25 mph on a snow covered road... I dont think so.... could you make an emergency brake and actually stop, not really, each to their own they say
Anyway, we get a few snowdays throughout the winter season, but most of the time the roads are black, salted, so if you'd add up all the days that there is snow on the roads and a winter tire is a necessity it would be not more than 7 I believe... the rest of the time the snow is ploughed away and the roads are salted, dry or damp, whatever, still pretty much everyone is using winter tires...
You need a complete set of 4, if you would get 2 for the front I assume the back would have too little grip and it would be very easy to loose the rear end, also would be very nervous under braking...
good luck though, wonder how many "I bumped into..." threads we will have this winter
