For my whole driving life I've lived near Pittsburgh PA, the snow here is not too bad and usually off the roads within 24 hours. Now that I am going to school in northwestern PA I am driving on snowy roads way more often. If the road is snowy enough I'll use 4HI, but what is the safest top speed? I've heard 50-55 is safe but I rarely will use it (4x4) above 40.