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Cooper

Cooper Discoverer STT Pro All-Season 40X13.50R17LT 121Q Tire

  • Based on 952 reviews
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Arrives Saturday, Jun 28
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Size: 40X13.50R17LT 121Q


Features

  • All-Season Off-Road Traction Tire
  • The most extreme all-season, off-road tire Cooper offers to date
  • Provides remarkable off-road performance without sacrificing on-road traction
  • Tread design helps to prevent stone retention
  • Armor Tek3 construction for added tire durability
  • The shoulder of the tire was designed with soft surface cleats and mud scoops
  • Standard Limited Warranty

Description

The Cooper Discoverer STT Pro All-Season 40X13.50R17LT 121Q Tire is the most extreme all-season, off-road tire Cooper offers to date, providing remarkable off-road performance without sacrificing on-road traction. The Discoverer STT Pro tire delivers best-in-class off-road performance, empowering the extreme off-roader to take on the toughest challenges. Patented Armor Tek3 tire technology adds strength to the tire sidewall, providing increased resistance to damage while driving over boulders and uneven, tough terrain. The Discoverer STT Pro comes with rubber formulated to combat shredding and damage from stones and off-road obstacles. The ROCK CLIMBER SIDEWALL gets max traction to help conquer even the toughest obstacles with deep ‘Climber Cleats’ and Flex Grooves built into the side of the tire that grip jagged rocks and power through thick mud. The MUD SLINGERS 2.0 are deep, wide trenches with additional notches throughout the tread combine to give you more grip to power through and help continuously clear thick mud from the tire. The EARTH DIGGERS can tackle tricky terrain with large blocks with alternating mud scoops that forcefully dig into loose dirt, sand or sticky mud. The STONE ARMOR TECHNOLOGY provides the ultimate durability with channels, ridges, and edges designed to help defend against sharp rocks and debris while expelling lodged stones.


Brand: ‎Cooper


Seasons: ‎Year Round


Size: ‎40X13.50R17LT 121Q


Rim Size: ‎17 Inches


Section Width: ‎13.5 Inches


Tire Aspect Ratio: ‎13.5


Load Index Rating: ‎121


Speed Rating: ‎Q


Load Capacity: ‎3195 Pounds


Tread Depth: ‎22 32nds


Tread Type: ‎Non-Directional


Ply Rating: ‎6-Ply


Tire Diameter: ‎40 Inches


Item Dimensions LxWxH: ‎39.76 x 39.76 x 13.6 inches


Manufacturer: ‎Cooper


Model: ‎DISCOVERER STT PRO


Item Weight: ‎91 pounds


Product Dimensions: ‎39.76 x 39.76 x 13.6 inches


Country of Origin: ‎USA


Item model number: ‎170142006


Manufacturer Part Number: ‎170142006


Construction: ‎Radial


UTQG: ‎780AA


Date First Available: March 10, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great tire
Size: 35X13.50R20LT 121Q
Great tread. 2nd tire to buy.
Reviewed in the United States 🇺🇸 on October 15, 2022 by JanieBenny Findley
    • Love these tires!
Size: LT295/65R20 129/126Q
Review Image by Erick
Would definitely recommend! Even with these 35" tires I still get 21 MPG on the highway with my 2015 Chevy 2500HD Duramax.
Reviewed in the United States 🇺🇸 on September 22, 2022 by Erick
    • Updated. They have done great in dry, snow, and mud. They struggle in rain on blacktop.
Size: LT265/75R16 123/120Q
Okay so let me start out pointing out why this review needs to be taken with a grain of salt. I'm driving a 2015 Toyota Tacoma DCSB with a Manual Transmission. So any wet traction issues I'm having may or may NOT apply to you. I have only the spare tire, the Tailgate, and about 25ft of medium duty chain (average tow chain thickness) in the bed of the truck. I have skidplates, a front plate bumper, and rock sliders on my truck. Rear bumper is the stock tin one that for whatever reason they thought chrome was a good choice. So I notice these tires break loose much much easier than my old Mickey Thompson MTZs did. These tires are more on the line of Goodyears Duratraks after they've been ran for a year (Those were my tire BEFORE the Mickey Thompson's). I CAN bring the truck sideways with these things with no effort in the rain, and moderate effort dry. During the rain the TC comes on quite often on city streets. Dry weather these do amazing, they have been worn down quite a bit but stuck to the road like a sports car. Splashed through a puddle and they slid out but once they dried they were glued I could take turns and not even hear them whine about the g's. They have impressed me enough to bump up the rating to 4* but I wouldn't buy them again still I'm going back to my mickey's. I have taken them offroad and they performed better than I expected after how they did on the streets. I was able to crawl through 3 ft deep carved out mud holes and keep chugging along (provided I didn't get high centered like in the last hole, for those out of the loop high centered is your on your frame so your tires aren't doing you much good. My skidplate became more of a plow than a skid) I don't have more than 8k miles on the tires so wear is okay. I am noticing some chop but thats alignment issue not the tire itself. My neighbor has a Toyota 4Runner with this same tire. He has had the TCS come on quite a few times in wet conditions as well so be ware if you need to make a left at a light in the rain. Finally got some snow to test these in. They did GREAT. Went through about 5" of snow with no issue what so ever. Still able to have fun in a very controlled way. With the Mickey Thompsons the same price ±$5 I'd say save yourself the cons of these tires and get the mickey thompson Baja MTZs. Performance: DRY - 7 out of 10 WET - 3 out of 10 SNOW - 6 out of 10 MUD - 8 out of 10 ... show more
Reviewed in the United States 🇺🇸 on November 26, 2019 by armyofsquirrels
    • Happy with STT Pros
Size: LT295/70R18 129/126P
Review Image by christie clements
Review Image by christie clements
Review Image by christie clements
Review Image by christie clements
Have been running these tires for a few years on another landscape truck of mine and been very happy with them . So when my new F250 came in and the stock tires were more like car tires I immediately ordered a set of these tires and up sized to the 295/70R18 and couldn’t be happier. Great grip in all conditions . Minimal road noise and they just make it look like a truck. Did take a 1mpg hit on fuel economy over the stock tires but the benefits outweigh the minor negative. Would buy them again for sure. ... show more
Reviewed in the United States 🇺🇸 on July 9, 2022 by christie clements
    • Good Looking, Quieter than expected
Size: LT215/85R16 115/112Q
So I ended up with a skinny pair of these 215 85r16. They came with this weird manual transmission swapped Caprice Station Wagon that I bought. The guy who built the car would use it to tow a dump trailer full of hay in his field. Car has an elocker whole 9. I bought it to tow but didn't really plan to take it offroad. So I had a nice pair of mud tires. I also have a 2000 Nissan Frontier 4x4 that was on bald Bridgestones, I decided to mount them on some Xterra wheels and bought a second pair for my Frontier. They look good. a little small, plenty of clearance, but I dig em. They ride good, grip good, what else can you ask for? I think these work out to a 30.4" or so. They rose the truck up a good bit. Will have to get this thing offroad asap ... show more
Reviewed in the United States 🇺🇸 on March 17, 2022 by Franklin Campbell
    • Good date code on tires
Size: 35X12.50R20LT 121Q
Review Image by Lawrence Medley
Very fast shipping great price I cought the sale price!!! Date codes were very current will update after mounting
Reviewed in the United States 🇺🇸 on August 28, 2022 by Lawrence Medley
    • Amazing
Size: 40X13.50R17LT 121Q
Review Image by Jason strycharz
These things are amazing they just look so meaty all the tread on the side I got 40” on my rubicon diesel and it drives super smooth. Just make sure to buy balancing beads
Reviewed in the United States 🇺🇸 on July 30, 2022 by Jason strycharz
    • Best tire I've purchased in a while.
Size: 35X12.50R15LT 113Q
Nice aggressive tread pattern. Works well on road or off. Very low road noise. Very satisfied so far!!!!!!
Reviewed in the United States 🇺🇸 on July 24, 2022 by Amazon Customer

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