In 2018 the paved roads were all clear in South Central CO, but above 8000' or so on forest service roads snow was 10"+ in a lot of places. Lots of steep dropoff's. I wouldn't have been there in a 4X2 truck. I brought chains for all 4 wheels, but didn't need them. Later in the week as the snow melted it turned to mud. The only time I had any trouble was meeting a 4X2 truck going up while I was coming down in a muddy section. He only wanted 1/2 the road, the middle 1/2. I got too close to the edge and slid into a ditch. It took a few tries, but I managed to drive out. I bought a winch when I got home.
A lot of guys were trailering ATV's to just where pavement ended and using them at higher elevations where snow/mud was worse.
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