Discoverer S/T MAXX™

Fits Trucks/Pickups All-Season

Discoverer S/T MAXX™ is rated 4.4 out of 5 by 113.
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Standard Limited Warranty
Free 45-Day Road Test
Studdable

The Discoverer S/T MAXX™ is designed for tough terrain, including rocks and gravel, with on-road stability and performance.

  • Tread design helps to prevent stone retention
  • Armor Tek3® Construction for added tire durability
  • Cut and Chip resistant tread compound/composition

M+S Rated

Features

Dry Performance

The tire’s ability to grip the road in dry conditions.

Wet Performance

The tire’s ability to grip the road in wet conditions.

Tread Wear

The wear rate of the tire.

Quiet Ride

The measure of how quiet a tire is while driving.

Handling

How the tire is able to respond to driving such as accelerating, braking, steering and turning.

Off Road

The tire’s ability to have grip on unpaved surfaces such as dirt, mud, sand, rock or gravel.

*When compared to other Cooper® tires.

Tire Design

  • Hybrid 4-5 Ribe Design

    Provides low tread pattern noise and even wear.

  • Dual-Draft and Non-Parallel Groove Walls

    Help reduce stone retention and resist cutting and chipping.

  • Stone Ejector Ribs

    Help discharge debris and resist stone retention.

Full Specs

Tire Size Service Description UTQG Load Range Sidewall Approved Rim Width Measured Rim Width Section Width Overall Diameter Tread Width Tire Weight Max Load Tread Depth (1/32")
30X9.50R15LT 104Q C BLK 6.5 - 8.5 7.5 9.3 29.69 7.68 44 1985 18.5
31X10.50R15LT 109Q C BLK 7 - 9 8.5 10.7 30.75 8.35 49 2270 18.5
33X12.50R15LT 108Q C BLK 8.5 - 11 10 12.6 32.76 9.88 58 2205 18.5
35X12.50R15LT 113Q C BLK 8.5 - 11 10 12.2 34.45 10.31 66 2535 18.5
LT215/85R16 115\112Q E BLK 5.5 - 7 6 8.4 30.31 6.22 38 2680 18.5
LT235/85R16 120\116Q E BLK 6 - 7.5 6.5 9.5 31.97 7.4 51 3042 18.5
LT255/85R16 123\120Q E BLK 6.5 - 8 7 10.2 32.8 8.15 58 3415 18.5
LT225/75R16 115\112Q E BLK 6 - 7 6 8.9 29.49 7.01 46 2680 18.5
LT245/75R16 120\116Q E BLK 6.5 - 8 7 9.7 30.67 7.8 49 3042 18.5
LT265/75R16 123\120Q E OWL 7 - 8 7.5 10.5 32.01 8.46 55 3415 18.5
LT285/75R16 126\123Q E OWL 7.5 - 9 8 11.7 32.91 9.29 62 3750 18.5
LT315/75R16 127\124Q E BLK 8 - 11 8.5 12.5 34.45 10 67 3860 18.5
LT245/70R16 118\115Q E BLK 6.5 - 7 7 9.8 29.53 7.52 47 2910 18.5
LT265/70R16 121\118Q E BLK 7 - 8.5 8 10.9 30.87 8.7 54 3195 18.5
LT305/70R16 124\121Q E BLK 8 - 9.5 9.5 12 33.07 10 63 3525 18.5
LT235/80R17 120\117Q E BLK 6 - 7.5 6.5 9 32.01 7.4 51 3085 18.5
LT255/80R17 121\118Q E BLK 6.5 - 8.5 7 10.2 32.8 8.15 58 3195 18.5
LT245/75R17 121\118Q E BLK 6.5 - 7.5 7 9.4 31.54 7.72 52 3195 18.5
LT255/75R17 111\108Q C BLK 6.5 - 8.5 7 10.2 31.77 8.15 55 2405 18.5
LT285/75R17 121\118Q E BLK 7.5 - 9.5 8 11.1 34.06 9.21 65 3195 18.5
LT245/70R17 119\116Q E BLK 6.5 - 8 7 9.6 30.71 7.6 49 3000 18.5
LT265/70R17 121\118Q E OWL 7 - 8.5 8 10.7 31.85 8.7 57 3195 18.5
LT275/70R17 121\118Q E BLK 7 - 8.5 8 11 32.17 8.86 59 3195 18.5
LT285/70R17 121\118Q E OWL 7.5 - 9 8.5 11.5 32.99 9.29 62 3195 18.5
LT295/70R17 121\118Q E BLK 7.5 - 10 8.5 12 33.23 9.8 64 3195 18.5
LT315/70R17 121\118Q D BLK 8 - 11 9.5 12.8 34.57 10 66 3195 18.5
LT265/65R17 120\117Q E BLK 7.5 - 9.5 8 10.7 30.51 8.66 53 3085 18.5
LT305/65R17 121\118Q E BLK 8.5 - 11 9 12.3 32.64 10 64 3195 18.5
37X12.50R17LT 124P D BLK 8.5 - 11 10 13.1 36.89 10.35 79 3525 18.5
LT265/70R18 124\121Q E BLK 7 - 9 8 10.7 32.87 8.62 58 3525 18.5
LT275/70R18 125\122Q E BLK 7 - 8.5 8 11.1 33.39 9.02 61 3640 18.5
LT295/70R18 129\126Q E BLK 7.5 - 10 8.5 12 34.25 9.69 67 4080 18.5
LT305/70R18 126\123Q E BLK 8.5 - 10 9 12.5 35.08 10 70 3750 18.5
LT265/65R18 122\119Q E BLK 7.5 - 9.5 8 10.7 31.81 8.62 56 3305 18.5
LT275/65R18 123\120Q E BLK 7.5 - 9 8 10.8 32.2 8.66 58 3415 18.5
LT285/65R18 125\122Q E BLK 8 - 10 8.5 11.8 32.8 9.29 63 3640 18.5
LT265/60R18 119\116Q E BLK 7.5 - 9.5 8 10.7 30.75 8.62 54 3000 18.5
LT285/60R18 122\119Q E BLK 8 - 10 8.5 11.8 31.65 9.49 61 3305 18.5
LT305/60R18 121\118Q E BLK 8.5 - 11 9 12.1 32.64 10 66 3195 18.5
LT275/65R20 126\123Q E BLK 7.5 - 9.5 8 11.1 34.17 8.98 65 3750 18.5
LT265/60R20 121\118Q E BLK 7.5 - 9.5 8 10.7 32.76 8.62 59 3195 18.5
LT285/60R20 125\122Q E BLK 8 - 10 8.5 11.3 33.62 9.17 63 3640 18.5
LT285/55R20 122\119Q E BLK 8 - 10 9 11.7 32.6 9.29 61 3305 18.5
LT295/55R20 123\120Q E BLK 8 - 10 9.5 12.1 32.95 10.2 65 3415 18.5
LT305/55R20 121\118Q E BLK 8.5 - 11 9.5 12.2 33.43 10.28 69 3195 18.5
35X12.50R20LT 121Q E BLK 8.5 - 11 10 12.5 34.65 10 69 3195 18.5
35X12.50R20LT 125\0Q F BLK 8.5 - 11 10 12.5 34.65 10 69 3640 18.5

Reviews

Rated 5 out of 5 by from 5 years and still going Had these tires and have beat the h**l out of them for well over 60,000 miles. Mtns snow rocky boulder mtn in Utah you name it. Driving to northern Alberta from Utah and back as well as Washington and back. Little noisy but they haven’t let me down. Picked up a nail 3 years ago and have had a plug in them since and still wearing just fine.
Date published: 2019-08-07
Rated 5 out of 5 by from Everything I Expected So for me it was hard to get away from the AT3s. They are the best all around truck tire I've ever ran but having a firewood business on the side, I go almost anywhere to cut and deliver. My AT3s were wore out so I decided to upgrade to the ST Maxx for superior traction off road on my 97 Z71 Silverado. These tires are everything I expected. Enough grip to get through moderate mud, tough enough to not worry about running over limbs and debri and stumps, and relatively quiet on the road. They did great this past winter in the ice and snow as well which I was concerned about. And they look awesome as well. Haven't put enough miles on them yet to judge treadwear but are wearing nicely so far. I would definitely recommend them if you daily drive but need a tough looking tire that handles abuse and any terrain condition!
Date published: 2019-07-09
Rated 5 out of 5 by from WOW What a phenomenal tire, Cooper Tires never fails to disappoint! Prior to running these shoes I was running all terrains from firestone that had approx. 22-23 mpg city. When I got the Coopers and saw this drop I was somewhat taken back by the numbers (18-20) mpg city. After some years of using them I have no issue and would prefer this tire over any in the game. These tires have saved my *** numerous times during storms and have proven to hold up exceptionally, which is my number one criteria in a tire. The tread is good, stopping is exceptional as it has also saved me from rear ending numerous “different” drivers and overall I couldn’t speak higher of this shoe, definitely a great buy!
Date published: 2019-06-06
Rated 1 out of 5 by from Yous need to start putting the god darn prices up with the of your tires!!!! I am disappointed that yous don't put the prices of your tires up so that people know just how much they cost pre tire !!!
Date published: 2019-05-22
Rated 4 out of 5 by from American made Bought these tires for my 2018 Chevy 2500. They required more balancing weights than I would like to see from a high quality American made tire. They grip well in hard pack dirt, sand, snow and ice. Decently quiet for the style of tire it is. Work great while towing and have decent wear. 15k miles on them so far and plenty of tread. I’m pretty hard on my tires and have ran over some sharp stuff with these without failure, they are tough as heck. Would definatly consider buying again. Thanks for keeping them made in U.S.A.
Date published: 2019-05-08
Rated 5 out of 5 by from Great on/off road tire I have 85000 km on these tires on a jeep wrangler. Which is regularly off road and they still preform. They are a good balance of on/off road tire. They are a little loud once they start to wear.
Date published: 2019-04-20
Rated 5 out of 5 by from Outstanding I have 144,000 on my F-150, 63,000 on my discoverer st maxx. At first at 40 psi tires felt like rolling in corners. Put more air in and cured the roll. Traction has been outstanding especially first 30,000. Had blow out on Goodyear wrangler at 38,000 won’t have them again. Cooper are a little stiff but no blowout and 25,000 more miles. There are good and bad features with all tires but I like tires that don’t leave you on the side of the road and get mega miles out of them.
Date published: 2019-03-15
Rated 5 out of 5 by from 30k morning miles lots of life left. I have put 30k miles on these tires on my 2 door Wangler. The tread wear is minimal. I run trails in Arizona and Utah frequently. These tire have performed remarkably well in mud, sand and on slick rock sandstone. I am especially impressed with how tough the sidewalls are running partially deflated off road.
Date published: 2019-03-04
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