DOT studs are almost useless, and in most places illegal. you can hear them, they sound cool IMO, but not good if that makes sense.
https://www.youtube.com/watch?v=gQxrXHdalE8
they just dont achieve the penetration into the ice needed to really turn the grip around like even a WRC stud, never mind a bolted stud.
i know some folks who put longer than Dot studs into them, they probably work better, but at the cost of road worthiness.