Does the vehicle have to be jacked up to fit AutoSock?
No, just stop your car and engage the handbrake. Make sure the car is not in a slope during fitting. Pull the AutoSock over the driving tires and downwards as far as possible, and then move the vehicle approx. 1m, to pull the remainder into position. AutoSock will automatically become centered when you start driving. If you are stuck, do as above, but then make a small wheel spin instead of moving the car.