A little over a year ago, we began our long-term test of a set of Cooper Discoverer STT Pro mud-terrain tires.

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For most, the excitement of getting new tires is also met with a feeling of uncertainty. Will they meet your needs and expectations? Will they whine so loud on the highway that you can’t hear yourself think? Will they clog up with debris? To alleviate some of that anxiety for you, and to answer at least some of your questions, we performed a three-installment long-term road test on the STT Pro tires, taking them through as many terrain situations as possible.

This is the third and final report on the STT Pros rolling under our 1979 Jeep CJ-7 (weighing in right around 4,600 pounds). First, let’s look back at the two first reports for some background. In the first report (fourwheeler.com/how-to/ wheels-tires/1807-long-term-tire-test cooper-stt-pro), we provided all the tech on the tire and our first impressions. After another six months of sustained and observational seat time, we gave you the second round of the long-term test on the Coopers (fourwheeler.com/how-to/wheelstires/1811-cooper-discoverer-stt-protake-2). For the final wrap-up and overall impressions after a year of rolling on these Discoverer STT Pro tires, read on.

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Good off-road tires should also work well around town. These have seen about 5,500 miles of pavement, and during that time these tires have been rotated twice. The tread is wearing evenly and holding up well to off-road abuse, with no chunking. Mud-terrains tend to be a little loud rolling down th