I live in Northumberland (which can attract bad weather in the winter) - and drive about quite a bit, I would buy some winter tyres, but a set would cost more than the car cost me. So it occurred to me that socks or possibly these aramid "chains" might give me a bit of extra grip if it snows.
Have a look at these -
http://www.exeros-technologies.com/mita-snow-chains I have not tried them but they look very interesting and are universal. Change the car but keep the snow chains.