I ran 4 of those on an older Honda Civic. I gave the tires away after we donated the car, and they still plenty of tread left after 8 seasons. I would put them on at the first freeze, and leave them on until no longer needed. The only traction problems that I had was in deeper, slushy snow, where I would still need cable chains once in awhile. Deep, slushy snow seems to sometimes need more voiding, something like a mud terrain or aggressive all terrain can work well, but such tires don't seem to always do as well on packed snow and especailly soft, polished ice. With the studded tires on the Civic I could drive when you could not walk on the roads during ice storms, as the car was light, front wheel drive, and the studs held well enough. With an AT or MT tire that does ok in snow but not on ice you don't have many alternatives left as chains don't always work on such tires, while a good ice tire can always be chained for deep, slushy stuff.
In summary they were good tires, and my experience with them over the years made me a believer of studded tires. Hockey rinks don't tell you squat about worst case winter traction problems, hills and polished 'soft' ice close to freezing do.
