Still 4. Even with FWD. We've found that in the snow, without snows on the rear the rear can easily fishtail out of control in a corner due to the lack of traction. Imagine in a corner, normally all four tires of the same grip will keep the car stable. Then imagine two front snow tires with tremendous grip in snow, and two rears with very little grip in snow... the result is normally an unintentional 360.
A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more!