Snow tires on 4 extra rims with pressure sensors are the way to go. Regular all season tires are a joke ! I am learning the hard way. I tried just 2 snow tires on the front of my little car. It went good ,stopped good,but if you turned a corner as in town going slow the rear of the car would slide around !!!! Tried some weight no help. So I got 2 more snow tires for the rear. Now it goes good. So after useing 2 extra rims with no sensors and not having extra rims for the others and had my tires swapped around on my good rims that are now getting bad from poor tire mounters and road salt.My TPMS light can't make up it's mind. I now see that trying to save some money is actually going to cost me more then if I'd of just bought a snow tire package from tirerack.com.
I also wish I'd of bought the steel rim version of this car too. I'm not an alum. wheel fan either. Many tires shops still don't have good equipment to mount and dismount tires without scratching them all up and then they don't have the proper balance weights or even stick on ones.