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Reviews - Cooper Discoverer STT On / Offroad Tires Reviews by Offroaders.com - - - - - - - - - - - - - - - Review Engine Powered by ReviewPost


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88% of reviewers $326.05 8.0
Cooper-Discoverer-STT.jpg


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Description: Cooper Discoverer STT On / Offroad Tires


The Discoverer STT is Cooper's premium high void off-road light truck traction tire designed for drivers who want the utmost in off-road traction. It is offered in a wide range of commercial and large diameter flotation sizes and is designed for use on pickups, SUVs and off-road vehicles.


DEEP BUTTRESS LUGS


The Discoverer STT's aggressive tread design extends far down the sidewall of the tire to enhance its soft surface traction and also provide additional “bite” in rock climbing applications.
RIM FLANGE PROTECTOR


Strategically placed in the lower side wall area, this feature helps protect the wheel and tire from hazards in off-road driving conditions while enhancing appearance.


TAPERED STONE EJECTORS


An integral stone ejector rib extends down from the center lugs to the buttress blocks to help prevent stones and debris from lodging between the tread elements while contributing to the overall soft surface traction.


SUPER TRACTION TREAD


The Discoverer STT's computer designed, non-directional tread employs a combination of features including deep buttress lugs, notched and scalloped shoulder lugs, and a unique center traction zone to create a bold, aggressive tire for tough off-road applications.


ARMOR-TEK3 CARCASS CONSTRUCTION


The heavy duty carcass of the Discoverer STT is constructed of two radial polyester body plies and one angled polyester body ply to deliver 3 plies of protection for superior resistance to impact breaks and bruising.
Keywords: Cooper Discoverer STT Mud Terrain MT


      Cooper-Discoverer-STT.jpg

Anonymous
Review Date: Fri January 28, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 9 

 
Pros: Great performance all around
Cons: 10 ply tire - weight

Running these on my 2008 Toyota FJ Cruiser. Have had them on for 18 months now. Great snow traction and off road performance while being mild on the roadway; no loud humming or spongy feel. I siped the center lugs myself which really helped the ice traction issue here in the Colorado Mountains! These tires have worn like iron while providing a nice responsive ride. Being a 10 ply tire, they area heavy compared to my other AT tires. Other than the weight....no complaints here.
Anonymous
Review Date: Sun January 30, 2011 Would you recommend the product? Yes | Price you paid (per item)?: $240.00 | Rating: 10 

 
Pros: Looks, Lug Depth, side lugs, and looks again :)
Cons: None So Far

Thank you to all you loyal posters. I was very picky when it came to buying my next set of tires. After careful review on this site I decided on the Cooper Discoverer STT's.


(I bought these tires 3 days ago)


I have a 95 Toyota 4Runner that has a couple inch suspension lift so that it clears the 33*12.50's and also has a Lock-Right rear Locker among other mods.


The drive to town takes about 18 minutes on the highway and these tires dont make much noise at all when new. We will see how they sound once they are broken in.


I am yet to try them in mud/sand/rock but the day I bought them I hit the trails up here in Norcal and tried them out in snow/ice. They did well. My 4Runner is converted to manual locking hubs and I did stop before we hit the snow and locked the hubs just to be safe. (I did not engage 4wd though) The snow these tires hit was VERY hard packed snow and lots of ice. About 2 1/2 feet of snow that we were walking on without sinking through.


I was very impressed with these tires and I would give them 7 for snow on a 1-10 scale and definitely a 10 out of 10 on trail terrain.



I will post feedback on my next review which will be testing these tires in mud.
Anonymous
Review Date: Thu February 3, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 9 

 
Pros: GREAT TRACTION , LAST FOREVER,
Cons: SOME ICE ISSUES

I had a set of 31/10.5-15 stt's on my ford ranger 4x4 for 28,00 miles and when I traded it in they still looked like new !!I used them as a daily driver and for hunting & fishing, hiighway, dirt,rocks beach sand, mud great tires , only small item to be noted (ice) had some trouble out on the lakes ice fishing , chains fixed that !! I just got a 2002 dodge ram 1500 4x4 the dealer put on brand new mastercraft 265/75-16 at'2 tires and after 2 snow storms ,I got sick of getting stuck, 4 brand new 285/775-16 stt's went on this morning , AH life is good again, I give them a 9.5 and recomend them ,
Anonymous
Review Date: Mon February 14, 2011 Would you recommend the product? Yes | Price you paid (per item)?: $325.00 | Rating: 6 

 
Pros: Pull good, Even wear, many sizes, price
Cons: out of round conditions

Ok I have a 2005 F-350 4x4 crew cab short wheel base single wheel with the factory 18 x 8 wheels. I bought the first set of these coopers in 2005 they started having problems right off the bat. Cooper recalled them and came out with a heavier duty tire of the same size (35 x 12.5 x 18)So I traded out for the new tire. I have put nearly 40000 miles and they are at 1/2 tread left. I pull goose neck trailers for up to 500 miles on the interstate and the trailer has about 30000 lbs loaded weight. Never had a problem with flats or the tires handling the weight. My truck can smoke these for about 120 ft on pavement and they are still good with no cracks on the side wall or chipping of the lugs. The only problem I have is the out of round. I even took the truck to Tallahassee to a guy that have a trueing machine. He said they were way out when he cut them. They were great after that. Now 15000 miles later they are do the same thing. They are not cupped or wearing irregularly. I scared they have bad cords in them and now looking for something else to buy.With all tire in the 325-400 dollar range I am on here reading reviews to try a get a good tire. Will not be buying these again.
Anonymous
Review Date: Thu February 17, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 0 

 
Pros: Traction, not too noisy at all especially at lower speeds, and if you never drived above 55.
Cons: There not free

I have just purchased a second set for my other 4x4 one ton, after having purchased the first in Dec. 1, for those who understand you need to carry chains in the Winter and do not tow a 30,000 lb trailer this is excellent tires, and I live on 8 miles of Gravel Mountain Road.


For Snow, it means no chaining till it gets deep or Icey.


I could purchased any tire, but chose these. My old set is two months old, but they have been given a real test.


A-1 tires, as for wear miles on any deep tread, I say for the top line tires it will be wieght,driving habits, and road conditions.


Good driving!
Anonymous
Review Date: Fri February 25, 2011 Would you recommend the product? Yes | Price you paid (per item)?: $285.00 | Rating: 10 

 
Pros: I currently have over 60K on these tires! They have been the best tires that I have run on my 2004 Ram 1500 HEMI 4x4. 90% on road wear, wore evenly, very "grippy" even at low tread. I will keep putting these tires on my truck as long as they mak
Cons: Vibrate quite a bit at low tread, considering that this is an aggressive tread, I balk at marking this in the negative column. It is the only thing that I could come up with.

I would highly recommend these tires to any prospective buyer. They came highly recommended to me, and after 60K+, I won't buy any other tire unless Cooper stops making them. They have been the absolute best tires I have run! If you are able to get an unlimited balance and rotate with your purchase, I would do it religiously. They wear great, but they will chatter quite a bit if left unrotated.
Anonymous
Review Date: Wed March 23, 2011 Would you recommend the product? No | Price you paid (per item)?: $450.00 | Rating: 2 

 
Pros: Look good when you buy them
Cons: The tread chips and does not hang on to the tyre

The tread chips and does not hang on to the tyre in serious stuff. Coopers say they fixed this and changed the formula, but whatever they did has not fixed it. I bought new STT's in 2011 and they are absolutely crap. Never again Mr Cooper, you're not up to Australian conditions unfortunately.
Anonymous
Review Date: Fri March 25, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 9 

 
Pros: mileage
Cons: none

I have these tires on a 2001 GMC 2500HD crew cab 4x4 with the 8.1L engine. I got almost 60000 miles on these tires, which I didn't think was possible and yes the truck is driven everyday either hauling hay or animals somewhere. I have never been stuck in any mud I have gone into. Yes they humm on the pavement but tell me what mud tire doesn't. Looking to get my next set.
Anonymous
Review Date: Sun May 1, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 10 

 
Pros: Wear great, aggressive, look great
Cons: Dealing with the manufacture

I have these on my Hummer H2 in 37x12.5x17 size and they turn heads in appearence. The first set of these lasted 40,000 miles, the set I'm needing to replace now have 56,000 miles. The difference in miles was due to me not rotating them enough. I live in the Smoky mountains and rotating at 3,000 miles is the key to getting more out of them NOT 5000 like i did on the 1st set (my bad). Performace wise I've only got stuck once with them, and it wasnt the tires fault, it took a bullozer to pull me out of the mud as I was buried clear up to the floor of the truck. Mud and trail is not a problem with these, snow is OK, ice sucks, with ANY tire. Once broken in they are what I consider very quiet on the roads, as I do about 85-90% of my driving on paved roads. I guess the fact that I'm getting ready to put my 3rd set of these on the Hummer says I'm sold on them. The only negative I've had was with the facotry on another ser of different coopers I had on the wifes FJ Cruiser which wore out at 16,000 miles. After alot of arm twisting they gave me a 50% refund which I applied to a different brand for her FJ
Anonymous
Review Date: Tue May 3, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 8 

 
Pros: quietest mudder, even wear
Cons: rock cuts

Bought these in 37-12.5-17 had them for 35000 mi on an 06 dodge 2500 gas. Still have around 50% tread on them. Two out of five were out of round when i bought them and they sent me new ones. Try that with dick cepecs. Quietest mud tire ive seen but not the best in mud. ok in snow, had worse on ice. Have some rock cuts in the tread but nothing tore off. Ran some 285s on my diesel towing and they wore out at 30000 mi. much better life with no torque or weight. Much cheaper than toyos seem just as good. Never had a mud tire wear even until now. Great tire just not for towing. My only complaint is they throw rocks real bad until 50% on gravel roads,hard on mirrors, windows and paint.Cant seem to find a better tire though, they stood behind my out of round ones. Cant complain ive had alot of worse tires that cost more and were terrible on the road,or fell apart like cepecs. Might buy again not bad other than the rocks they pick up.
Anonymous
Review Date: Thu May 5, 2011 Would you recommend the product? Yes | Price you paid (per item)?: $395.00 | Rating: 9 

 
Pros: traction, value, mileage.
Cons: none so far.

I bought these tires for my 2001 dodge 2500. I immediately noticed a better smoother ride. These tires are quiet compared to bfg,s and Goodyear muds. Great traction in snow and ice. I drive a mountain pass each week in the winter and rarely have to use 4 wheel drive. Tires were siped. I compared these to the toyo mud tires and the coopers are a far better tire. I highly recommend these tires, great ride, awesome traction in mud and snow and great value.
Anonymous
Review Date: Wed June 1, 2011 Would you recommend the product? Yes | Price you paid (per item)?: $189.99 | Rating: 10 

 
Pros: price, aggressive & functional sidewall, great traction on/off road
Cons: None thus far

These ain't your grandfathers Coopers of yesteryear! These are serious MT's!


Whats great is that @ the 285/75 R16 size, they are load D. From what I research a year ago, you WILL NOT find a Load C tire in that size in a 16" rim. Hence my delight in the load D rating of the Cooper.


Furthermore, the sidewalls are sinister, aggressive & functional as all hell!! Air 'em down & they flex superbly for my TJ. Have yet to get a puncture. On road they are predictable in both dry & wet conditions. In snow, they shine!


I'm definitely going to be buying a 2nd set when the time comes.
Anonymous
Review Date: Sat June 11, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 0 

 
Pros:
Cons:

Follow up.


Purchased one set for a 3/4 ton Ford 410 rear standard shift, and they did great through the winter, should have taken them off last month.


Second pair was on a 2007 GMC one ton.


six months of use and there is a about three small chips outs of rubber on each tire.


Snow was light this year, twice it was dicey, but did not need to put chains on, where I would have if I had just on on my Mich XPS's etc.


Listen up Pilgrim's, this tire has soft rubber which is what you need in snow and ice, and eight miles of up hill gravel road IMO, but take them OFF for summer driving on HOT roads. USE These tires in winter for daily user's.


265x75 R's E rating
Anonymous
Review Date: Sat June 11, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 0 

 
Pros:
Cons:

One more thing, at 60 PSI and staying at 55 on paved roads with a full sized Pickup you barely hear anything or feel anything as compared to other knobby tires, I rate them very quiet.


I recommend http://www.offroaders.com/reviewbox/showproduct.php?cat=86&product=748


MICHELIN XPS Traction for summer driving are year around Quiet wear great on hard rock gravel which just tears up tires, and this tire is great year around except Do Buy Chains and have them ready in Winter by being in the bed of the truck during the winter season.
Anonymous
Review Date: Wed July 6, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 2 

 
Pros: looks and sidewalls
Cons: wears quick and tread clogs up unless you use heavy throttle

I got a set of 285/75R16s on my 03 chevy 2500hd with a duramax and they suck! I went out in a lil bit of mud in a field and the clogged up i had 2 use heavy throttle 2 get out. i wouldnt recommend them 2 any1 with a heavy truck. I wish i had my procomps
Anonymous
Review Date: Sun October 2, 2011 Would you recommend the product? Yes | Price you paid (per item)?: None indicated | Rating: 0 

 
Pros:
Cons:

Mud ?


Mountain roads are gravel, and little mud especially in Winter.


Working men, and work trucks need the Best all around tires to get daily Work Done and carry Supplies.


XPS Traction for Summer, and Cooper for Winter with Ice and Snow with heavy loads is not recreation, but survivial and working.
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