Im not questioning that it doesn't snow down there plenty, and I don't know if they take care of the roads(plow/salt) out where your at but the amount of times it gets deep enough for snow tires to be useful over all-seasons(I don't know how well they work as far as driving and stopping on ice is concerned)to how much they cost+extra rims/sensors, how long they last(both on the car and drying out from sitting during the other/mild seasons) just, to me, doesn't sway me enough to recommend them. Your results may vary.
I can't comment on the temp effects and stuff on the tires but there are others here who may be able to answer your question on that.
When I first moved i was considering getting snow tires because I wasn't t sure the focus would handle the snow up here. Im glad I didn't buy a set.
Driving and stopping sensibly my cooper rs3s have had no issue handling the snow and ice I've been dealing with since December up here, everything from a coating to freezing rain to a few inches of snow.
Trust me I have an SUV with lockable 4WD and all seasons most of the time and I still refuse to drive on them in the winter. It makes a huge difference.
I don't have snow tires for the Focus only because it gets garaged and the SUV with winters comes out.
The first time the tires keep me out of a guardrail or from nailing a vehicle head-on is when they'll have more than paid for themselves. It only takes one good hit to total your car...or kill you or someone else.
And really every day I go out and not even come close to an accident is another day they've proved their worth.
Just a heads up, it snowed. Just now. While everyone was arguing. It's going to continue snowing all weekend and the roads are already now trashed because there was minimal pre-salting/prep. I'm not going to walk out and take a picture of my ruler, but I'd say there's about 2-and-change inches, which is plenty with the temperatures we're seeing, especially considering there's more coming.
I think that answers our questions there. That's great that you don't think you need them, but I do. Every single driver I know who knows what a snow tire is... has snow tires. That includes my family and a good chunk of my friends.
Can we get back to discussing what the actual best snow tires are (and summer tires, while we're at it, since I'll probably order 'em all in one shipment)?