My Review of Cooper Discoverer AT3 LTs

Jamison C

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I’m piggybacking off of @String-a-ling thread he started as we bought these tires around the same time.
https://wranglertjforum.com/threads/ntd-cooper-at3-lt.56336/
I bought these tires in the 265/75r16 (32”) variant to fit on my stock Moab wheels. I’ve put a couple thousand miles on them and at this point they’ve seen a variety of terrain and weather.

Looks:
These aren’t anything spectacular to look at. I would say the sidewall is a mix between a street tire and a true knobby AT tire, as the knobs don’t go down the sidewall very far. Eventually I want the next step up which is the AT3 XLT, but these are fine with the mildish setup I have going right now. My only gripe is that I wish the white letters were block style instead of just outlined.
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Noise:
I stand by my original assessment. I’ve never heard a quieter AT tire. In fact, I can’t hear them at all. There is absolutely zero road noise from these things no matter which top I have (or don’t have) on. YRMV depending on where you are as I’ve always considered AZ roads to be better than most. These also ride very smooth (load C) My shocks are blown so newer ones will only improve quality.

Off-Road Use:
So far I have no complaints on how well these grip. I’ve never had any issues getting up and around the smooth rock here. When I did Peyette Draw with the AZ crew a few weeks back, I aired down to about 12psi and don’t remember not being able to get through anything I tried to accomplish. When the tires initially were slipping, the lockers helped get me through. Ride off-road is significantly better than when the 245 MTs were on there. Again, my shocks are blown so newer ones will only improve quality.

Weather:
We’ve had some crazy winter weather this week including ice and snow, and these tires have performed admirably.

Rain - We’ve had a pretty busy rainy season since I’ve owned the Jeep and put these tires on. I don’t know much about sipes and what is ideal, but what I can say is that I can’t break these tires loose on wet roads. Sedona has become notorious for their roundabouts, and traditionally I could drift through them with my past Jeeps. Not with these tires. I legitimately feel like I would break and axle shaft before I could hammer the throttle enough to break the tires loose. That’s probably not accurate at all, but it feels that way. I’ve done some highway trips in the rain, and haven’t felt anything remotely squirrelly. The grip on the Coopers are great.
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Snow - This seems to be the important one to everyone. What I didn’t notice until today is that these are snow rated. And I think they lived up to that rating last weekend when a big snowstorm blew through northern AZ.
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I spent last weekend in Flagstaff, which believe it or not is in the top three US cities for most snowfall. The whole reason why I went in the first place. The streets were snowy but not icy so the tires did fine. I decided to take one of the mountain passes because I wanted to actually get up into the clouds where the snow was heaviest and see how well the Jeep would do. Down at city level was about 6” or so of snow, up high it was over a foot.
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I got about 3/4 of the way up the mountain before I had to turn around. I think the snow was about 8” where I had to turn around but this was also an undisturbed road with fresh powder. After turning around and getting out of the storm, I snapped a couple of pictures. I noticed the sipes were full of snow but the treads were not, something I was surprised to see. I didn’t feel like I was struggling on roads that had already been travels and packed down to ice.
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Overall I’m obviously pleased with the tires. I’ve only had a several different brands on my four different Jeeps but I have done all sorts of weather in them. These have seemed to perform optimally, and hundreds of reviews say the longevity is stellar. Just my .02¢.
 
@Jamison C Thanks for the shoutout Bud!

While I can't speak to snow performance at all as we don't get too much of that here in South TX, I'd like to corroborate everything else in this review! These tires grip really well, are quiet (even with a soft top) and feel confident driving at speed in the rain. I've run through some pretty deep puddles on the highway and while you will feel it, the tire displaces the water well and maintains grip. I also pull a mid sized trailer from time to time hauling stuff and they performed will in this context as well.

The mileage is also pretty damn good for a 32in tire. I averaged around 16.5-17mpg on 300 mile trip for work in November. I'm coming up on 5k miles and my 1st rotation and have noticed no discernible wear or extra noise. I cant wait to take an actual wheeling trip and see how they do! As a daily driver and "farm Jeep" this tire delivers on all fronts! I'll have more to say soon when I take my Hidden Falls trip sometime soon! 5k miles in, I am extremely satisfied with them and would highly recommend them! I will more than likely be getting a E-load set in the same size for my 3/4T LS Swapped Chevy Squarebody tow rig when I finish the build in the next month or so! (This is why I haven't been wheeling on them yet...$$$)
 
They are Coopers, what did yall expect?? :ROFLMAO:

Great reviews! I am still loving my Mickey Thompson MTZ’s, but may look at Coopers next go around.
 
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Thank you for all the info. Is it safe to say with mostly highway driving and the occasional backcountry trail and fire service roads, the Discoverer XLT is plenty tire to go with?
 
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Thank you for all the info. Is it safe to say with mostly highway driving and the occasional backcountry trail and fire service roads, the Discoverer XLT is plenty tire to go with?

Running them in my F350 and pleased.
Would consider MT newest AT if I was in need.
 
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Haven’t put a ton of miles on these but they are quiet and look a little better.
 
Thank you for all the info. Is it safe to say with mostly highway driving and the occasional backcountry trail and fire service roads, the Discoverer XLT is plenty tire to go with?

So keep in mind that this is not the AT3 XLT, this is just the LT. the XLT is a little knobbier with a slightly more aggressive tread.

That said, these tires are excellent for what you mentioned. I have done a lot of highway and forest service roads and they are still smooth and quiet. I have not had any scary incidents with rain or snow; they handle both quite well. I’ve only put 8000 miles on the tires in the last 2.5 years but they are wearing well and don’t show any indications of deteriorating. Keep in mind they make this tire in a Load C and Load E. I am wearing the load C.

I would recommend these to anyone that isn’t interested in mudding or rock crawling.
 
I’ve had a set of AT3 285/70/17’s on my Tahoe for 28,000 miles now. Rotated every 5,000 miles, and rebalanced twice, once at 10,000 and again at 21,000.
They are down to the wear bars☹️.
 
So keep in mind that this is not the AT3 XLT, this is just the LT. the XLT is a little knobbier with a slightly more aggressive tread.

That said, these tires are excellent for what you mentioned. I have done a lot of highway and forest service roads and they are still smooth and quiet. I have not had any scary incidents with rain or snow; they handle both quite well. I’ve only put 8000 miles on the tires in the last 2.5 years but they are wearing well and don’t show any indications of deteriorating. Keep in mind they make this tire in a Load C and Load E. I am wearing the load C.

I would recommend these to anyone that isn’t interested in mudding or rock crawling.

Thank you!
 
I’ve had a set of AT3 285/70/17’s on my Tahoe for 28,000 miles now. Rotated every 5,000 miles, and rebalanced twice, once at 10,000 and again at 21,000.
They are down to the wear bars☹️.
It's a Chevy, what do you expect? :)
 
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