I have Kuhmo tires on three Mazda 3s, they have been great so I bought this set for my truck.
At first, they were awesome in ice and snow and a great tire. They were rated 50 or 60 thousand miles. At about the 20k mark, these tires were showing extreme wear and now they need replacing with 29000 miles as they are unsafe to drive on wet pavement. They replaced goodyears with 59K on them.
I would have never paid 220 buck each for a 30 thousand mile tire. What a bummer