While the four - wheel drive does give you more
grip and confidence in slippery conditions, a good set of winter tyres offers
similar benefits at a much lower price without increasing CO2 emissions — thus saving you money on
road tax, too.
The light class which is really good at hugging the
road and handling rough terrain (think a dune buggy), the medium class which would be
similar to a stereotypical race car which
grips the
road well, and has a decent amount of speed and acceleration, and finally the heavy class which it lacks in suspension and acceleration but makes up for it in speed and
grip.