I’ll be switching mine over next week on both cars. Studded on the big car, normal winter tread on the small one.
Some definitions from the Swedish transport agency:
A definition of winter tyres
Winter tyres can be studded or non-studded so called friction tyres. The tyres must be
•especially manufactured for winter road conditions and
•marked with M+S, M-S, M.S., M&S, MS or Mud and Snow.
Note: There are occurrences with tyres marked with M and S that are not especially manufactured for winter road conditions, but for terrain driving.
Summer tyres have a mixture of rubber that makes them too hard during cold weather. That’s why you should use winter tyres when the temperature is around the freezing point and below.
The best tyres at the back
The tyres with the best pattern depth or the tyres that has the best grip on the road should be mounted at the back on the vehicle to decrease the risk of sliding when breaking or taking turns. The tyres with the highest studs should be mounted at the back. This goes for both front wheel and back wheel steered cars.