I've run Open Country A/Ts for the past 12 years or so, both AT2s and AT3s, and, overall, I've been happy with the tires. I live in Maine so the weather conditions that I drive in range anywhere from hot and dry summer roads (pavement and dirt), to rain-soaked highways, to heavy snow and slush back roads. In general, these tires have performed well, feeling tight and planted (no sagging or floating feeling) in turns, relatively grippy in snow and wear evenly. I've been happy with their performance, which is why I've run them for so long.
Unfortunately, my most recent set of Open Country AT3s have not held up. This winter I've noticed a marked decrease in winter weather performance, especially in slushy snow and even on packed snow (i.e. recently plowed) roadways. And when it comes to any sort of ice, forget about it. During my most recent oil change/tire rotation, I was advised that my tires, despite only have approximately 40K miles on them, are down to about 4/32s. These tires were installed in Summer 2021, at 123,000 miles and I'm now sitting at roughly 164,000 miles in Feb 2024.
Winter weather in Maine commonly runs through late March-early April so I will be replacing these tires in the next week so to make it through the rest of Winter without having to worry about slipping and sliding on my daily 35 mile work commute. Since I'll be switching to a set of Falkens, I won't be able to take Toyo up on their 65K Limited Mile Warranty guarantee, as they only provide a credit toward the purchase of another Toyo tire product. I just can't justify purchasing another set of Toyos with how these tires ones have held up.