Unexpected Blizzard: Awakening in Breckenridge, Colo., to 8 inches of fresh snow was surprising.
My skiing plans were foiled by a stomach bug and an impending task to gather gear for a friend in Leadville. The roads would undoubtedly be treacherous, but I took solace in my trusty tires.

An hour and a half later, navigating an unplowed Leadville street with confidence. The snowy drive was uneventful, all due to the remarkable grip of my Cooper Discoverer AT3 XLT tires with 10,000 miles on them. Here’s my six-month driving experience.
UPDATE: Four years later, after driving an additional 40,000 miles, check out our extended review at the end for insights on longevity and performance over a 50,000-mile examination.
My test set of tires was provided by Cooper for assessment. However, I aim to give an impartial view beneficial to tire shoppers.
In summary: The Cooper Discoverer AT3 XLT is a sturdy all-terrain tire suitable for various conditions. While more aggressive options exist, these tires offer excellent traction on and off-road while maintaining a quiet ride at highway speeds. The only drawback is their weight, impacting fuel efficiency, even in a robust vehicle like the F-150.
If you’re in the market for all-terrain tires, consider our top pick for Best AT Tires, the Cooper AT3 XLT!
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Excellent snow handling -
Versatile sizing for a variety of vehicles -
Great value for money -
3-Peak Mountain Snowflake rating and winter stud capable
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Could improve wet grip -
Audible road noise, especially on pavements
Cooper Discoverer AT3 XLT Snow Performance
Living in Colorado and frequently traveling to the mountains, winter tire performance is crucial. Stuck on shallow, slick snow with stock all-weather tires on my new truck, I resolved never to risk that again.
