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  1. #1
    Master Mechanic Jimmeh's Avatar
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    Apr 2009
    Columbia Falls, Montana, United States
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    Default Review for Cooper Discoverer AT3's

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ID:	53212After having a set of mud terrains made by Dean tire company last me about 65,000 miles, I was tempted to go for another set. However, they weren't the greatest tires in snow, and the road noise drove me nuts! So I decided to opt for some all terrain tires that were not only affordable, but had a nice warranty, looked aggressive and were built by a well known company.

    My tire guy told me that Cooper was introducing the Discoverer AT3, so I did what little research I could do on them, as there wasn't much material on them yet. At $1500 for 5 tires (with a 50,000 mile warranty, plus free tire replacement warranty from the tire store themselves), I will admit that it was a bit more than I wanted to spend, but it was also a step up in tire size (285-70-17). I installed this tires prior to most of our snow melting off and before a couple more smaller storms that would cover the highways enough to give me a good idea of what they could do, and I was very impressed. Snow and ice traction was even better than my studded winter tires, and even on wet asphalt, they grip great with little slippage and seem to stop the truck just as well.

    Off road, they grip to debris extremely well and seem to clean themselves out in mud just as good as the same Dean mud terrains that I had before. about 2000 miles on them now, and while I do have some uneven wear on the front due to my stupidity of forgetting to install my hub rings, it's hardly enough to notice even by touch. A tire rotation and my hub rings installed, and they should be good as new!

    On road, if you don't know what to look for as far as road noise, you would think you were driving on regular street tires. With my head unit on a modest volume, tire roar is non-existant at 65 MPH, and they seem to handle our highways pits, dips and bumps very well. I will admit that they do rub in parking lots when backing out of spaces, but that's thanks to going up to a 33" tall tire with no lift and little back spacing. Towing seems to be fine with them too, though I have not had large loads in my trailer yet to give an accurate review on that.

    Installed on a set of custom alloy wheels, these tires weigh in at a whopping 83.9 pounds each. Remember to lift with your knees and not your back when installing!

    On a all terrain tire scale of 1-10, I would rate these tires at a solid 9. Sure, you can probably find yourself a cheaper set of all terrains, or even spend a little more and even get a better more aggressive set, but for the money, the GREAT warranty and buy a Made in America product, these tires are great value and really are of high quality. I highly recommend them to anybody looking to upgrade.
    Last edited by ChevyFan; 06-24-2013 at 10:13 AM.
    2005 Chevy Silverado W/T
    4X4|4.8 with some mods (has only slightly more pull than a 5.3)|Auto|4 door ex cab|Cooper Discoverer AT/3's in 285-75/17's on Helo 842's|Cooper Discover M+S 265-75/17's on Devino DV349's|Flowmaster 40 Single in Dual out with custom bent pipe from the end of the cats back|2" Procomp leveling kit|Custom made center console|Custom dyno tunes|Air Raid CAI|Air Raid Throttle Body Spacer|Apex brand topper|Kenwood Head Unit with Kenwood speakers|Painted mirrors/grille|Debadged except front emblem|Bilsteins front and rear
    Planned mods not in order
    2 inch lift|Custom front/rear bumper|hitch tire carrier|roof basket on topper, bars on cab|finish center console build|install Midland CB|Power options|Tint|Custom made raised bed in the bed of the truck|Lund LunarVisor
    Also have a 1992 Ford Ranger with a lot of stuff done to it. Currently waiting for a bit of a rebuild.

    "The only woman I'm pimping from now on is Sweet Lady Propane. And I'm tricking her out all over this town."

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  3. #2


    Thanks for the review. I almost got some Coopers recently when I was getting new tires. (Truth is, I ALMOST got a lot of different tires) The primary reason I settled on the Hankooks was because I read multiple reviews comparing them to the BFG T/A KOs, but at half the price. I haven't driven on them yet as I'm out of the country, but my wife loves them. That being said, when I get my lift, I'll be upgrading to 35s and Coopers are on my short list of tires to consider so this review will come in handy. Thanks again.

    To Be Completed (Eventually):
    6" BDS Suspension lift | KingShocks Front and Rear Coil Overs | 4.56 Gears | 35" A/Ts (TBD) | Cervinis 07-12 Silverado Ram Air Hood | Fab Fours Front Winch Bumper (CS07-H2051-1) | Fab Fours Full Size Rear Bumper (CS07-W1850-1) | RX-2 Series Main Grille (Black) | Line-x Bed and wheel wells | Skid Plates | Rizor Automated Tonneau Cover | Custom Bed Insert | RBP RX-3 Series Nerf Bars | Kenwood Excelon DNX9990HD | JL Audio Stealthbox (2x500RMS) | JL Audio HD 1200/1 Class D Mono Amp | JL Audio C5-653 Components (Front) | JL Audio C5-650 Components (Rear) | JL Audio Slash v2 300/4v2 Class A/B Amp

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  5. #3


    I've used hancooks on my drift cars, me and my friends have always said there only good for burning off, I love my coopers I get 50k plus put of them, I still have my old set and they probably have another 15k left on them(pulled em off at 40k on em) coopers are great mileage tires
    2009 chevy 1500 z71 4x4
    2.5 ccm level,2.5 inch rear blocks 305/60/18 coopers stt,Debadged,10 series flow w/dual exit in front or right rear tire, KN CAI, diablo InTune, 18% tint all the way around ,spec-d euro headlights with black housings,winjet smoke LED tail lights,putco LED third brake light smoked, fab fours front bumper with 10k warn winch, RK sports ram air hood
    1965 c10 swb, zz4 350 with the hot cam and fast burn heads and a 780 Holley on top, richmond super street 5 speed,restorod

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  7. #4


    im rolling on some Cooper Discover ATP they are great. hook up good in just about anything.Click image for larger version. 

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    Last edited by darkness-lies-; 04-21-2012 at 05:51 PM.

    Chevy runs deep.
    2001 Silverado ext cab 4.8l v8 2wd
    40 series flowmaster dual with bowtie tips
    Anzo tail light
    Fire and ice lighted mud flaps
    2 12inch kicker comps with boston acoustic amp

    w2w nerf bars
    Mega third light
    Scanning light bar under tailgate
    Fix tint
    Upgrade deck
    Remote start
    High 4 headlight kit
    Rear side window covers<bowtie>

    My velocity is directly proportional to your proximity.

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  9. #5


    I just bought my 09 Silverado 2 weeks ago....had 25K miles on it with Goodyear AT/S tires. Yesterday the left front blew on the hiway, and this morning the right rear was flat....tried to air it up with my compressor and found the sidewall blew out. This is not the first issue I have had with Goodyear OEM tires...they are just crap. And, no, I did not run over anything....when I worked at Sears selling tires, if 10 tires can back due to a defect, rest assured that 8 would be Goodyears.

    I went to to order a set of Toyo Open Country ATs, as I have had three sets of them and loved them. But, they only had three in stock and I want to replace all the crappy Goodyears. The salesman recommended the AT3's and said they have great reviews and are better than the Toyo's. Well, we will see, as I did order them and they should be here tomorrow.

    By the way, I bought four 265/70/17's for $619 shipped. I generally have Walmart mount and balance my ties and they do a great job for about $50.

    I will post the results after I have a couple of thousand miles on them...we have a 5th wheel trailer permanently parked in a camp ground, and a lot of the guys use Coopers and really like them.
    2011 GMC Sierra HD 2500
    6.0L, Extended Cab, 4x4, 3.73
    2013 Flagstaff "V" Lite, 30', 7300#

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  11. #6


    Nice pick on the tires. I am a big fan of cooper tires. I have the Cooper Discoverer ST on my truck and both my cars have the Cooper CS4 on them. If the current wear on my truck tire holds out I should get roughly 48k+ out of them with 4/32 left which would be great since they are a high void AT hybrid. From what I saw of the AT3 they look like they should be great AT tires.
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  12. #7
    Master Mechanic Jimmeh's Avatar
    Join Date
    Apr 2009
    Columbia Falls, Montana, United States
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    Just had my tire shop rotate them for me (since I used my he-man-woman-hater strength to torque down the lugs and could not get them off last night). Guys said with 5 tires and the way they are wearing, 55K miles and they should still have a bit of tread left. Since I'll only be running these tires 4 or 5 months out of the year, I am guessing they will last a long time ;)

  13. #8


    I'm running a set of Cooper Discoverer ATR's and your review seems to be spot on with my experiences. I'm really happy with the tires and they even saved me once already. A Camry ran me off the road at 55mph over a small snowbank last winter. I had to fight it a bit, but thankfully the truck gripped and pulled back onto the road leaving a wash of snow across three lanes. One of my fist thoughts was, "I'm so glad I got my new tires last week". Anyways great tire, low road noise, and a great look.

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    Last edited by FrigginNoodles; 04-25-2012 at 07:06 AM.
    "The best things in life aren't things"

    2007 Chevy Silverado Classic 1500
    Ext Cab 4wd LT
    Check out my garage

  14. #9


    My roommates got the atrs and he's going on 55k miles we rotate or tires every month which helped a lot I'm sure but I wouldn't be surprised if he made it to 70k

  15. #10


    WOW!!!! My new AT3's came yesterday morning and I went immediately to Walmart to get them mounted and balanced. One tire actually required NO weight for a perfect balance.

    I drove from Illinois to South County St Louis (About 60 miles each way) and I have never been so impressed with a set of tires. Sooo SMOOTH, QUIET, soft on bumps....I thought I was driving the Escalade I used to have.

    Can't tell yet about wet roads, but it is supposed to rain her tomorrow and I will certainly get them wet. The crappy Goodyears were so stiff and rough, and would spin at an intersection if it even looked like rain!! And, they look really great on the truck...the OWL letters are very nice, not gaudy.

    This was a great choice and all for $619!!!!
    Last edited by zogg; 04-26-2012 at 07:59 AM.

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