REDrum
Aventurero de la Selva
I drive a lot.... I live in the mountains of Idaho at 5,100 feet. We average 300 inchs of snow at 6,000 feet and I spend a lot of time going back and forth up and down mountains.
I know a few guys with ATWs and have tested them on snow a bit. VERY good snow biased AT but not snow tires. Similar to Nokian WR. Fine for year round used here in southern New England. But for your 300" of annual snow I'd strongly recommend you consider a real snow tire. I'm very partial to Nokian but Firestone Winterforce are a hard to beat value.