I was going to mention those as well. Friends who live at 5,000 feet in Nevada use them, and smile while doing so.
I was waiting at a Costco the other day for my family and they had some oddball looking Michelin tires stacked that had the snowflake on a mountain symbol on the sidewall. I'm pretty sure they were supposed to be all-season tires. Weird too as they had B traction rating (which is wet traction), an A temperature rating, and a 640 treadwear rating.
After looking it up they're the Michelin CrossClimate 2.
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