Even though new tires are very good on ice, fresh new studs do excellent ice. They just have too many drawbacks. Every year I “screw” 80 threaded studs into the R4 treads of my tractor. http://www.maxigripstore.com
Anyone who has driven a tractor on ice knows how terrible they are, even with chains. A tractor tire hardens like a rock and nothing else works. But they get taken out in the spring and are not used 7 months out of the year. Plus, they stick out significantly more then a car tire studs. I also use hex head sheet metal screws in a pair of dedicated boots to walk on our icy roads. I screw hex heads sheet metal screws into the treads of the snow blower which is also a great traction aid . I also have studs on the truck as we don’t take it on ling trips. So studs do an excellent job.
But for cars in this day and age that spend much time on pavement, no thanks; they just aren’t worth the head ache.