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Cooper Discoverer A/T3 Tire

Posted in How To on October 1, 2011
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Cooper Tire has come a long way in the past few years. For some time, most of us considered a Cooper tire when we couldn’t afford what we really wanted. There was nothing wrong with the tires, they just didn’t seem to hold up as well to the abuse we put on tires as compared to regular auto enthusiasts. The truth is we push our tires harder than the average Joe.

We recently visited with the folks at Cooper to give their new Discoverer A/T3 all-terrain light truck tire a thorough test at their facility in Texas. After thrashing the new tires for a couple days at their test facility, we brought a set home to load them on to one of our vehicles, which is when the real testing began.

Initial Review
Jimmy Lewis of Dirt Rider Magazine
With only a couple weeks’ worth of testing on them, these tires are absolutely mediocre in almost every respect. That is not a bad thing, though; you hardly notice them doing anything that is outstanding or horrible. One standout feature for me was that on the freeway, they followed the grooves a noticeable amount, like a motorcycle tire does. On the dirt, they didn’t bite extra hard or slide easier than other tires. Very middle of the road—which I like. The on-road noise is very low and the ride comfort is on the better side of other all-terrain tires I have driven. On washboards there were times I wished the tires provided a stiffer or softer feeling. I compensated by adjusting my speed (usually faster) and the tires cooperated with the suspension on the truck. Durability seems good on the rocks, but I will need some more time on the tires when I am on the road over the next few months.

Initial Review
Jordan May of Off-Road Magazine
Jimmy and I shared almost the exact same initial opinion of the tire. In Texas, I was allowed access to the Cooper wet track. It was setup with a slalom course coned off for time. Three identical model trucks were outfitted with various competitor tires so I could see how the A/T3 stacked up. As fast as I could push all three trucks, my time with the Coopers was best. In the dirt, the tires gave me confidence to get through corners quickly with little trouble. The tire behaved well on the road and noise is minimal. The only feature of the tire that doesn’t strike our fancy is the look. It looks more “street friendly” than we typically like. But if you can do without the look of giant tread lugs, give the Discoverer a look before your next purchase; you’ll be very pleased with them. Be sure to check back and see how the tires are doing with a few thousand miles on them.

Specifications as Tested

Make/Model: Cooper Discoverer A/T3
Mounted on: ’97 Dodge Ram 1500 4x4 stock 16-inch wheels
Size on sidewall: 245/75R16
Load range: C
Max load: 3042
Tire hardness: 64
Tread depth: 33/64
# Plies in sidewall: Two polyester
# Plies In tread: One nylon + two steel + two polyester
Weight of tire: 38 pounds
Measured diameter unloaded: 30.52 inches
Measured width unloaded: 9.62 inches
Measured tread width: 7.40 inches
Available sizes: 29 to 35 inches tall
Available For: 15-,16-,17-,18-, and 20-inch wheels

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Cooper Tire
Findlay, OH 45840

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