Discoverer S/T MAXX™

Fits Trucks/Pickups All-Season

Discoverer S/T MAXX™ is rated 4.4 out of 5 by 129.
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Standard Limited Warranty
Free 45-Day Test Drive
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 Great looking tires! Just had them mounted and noticed that they have the rim protection on them which is not in the information details! Which should be to let Customers know about this other feature on the tires! Can't wait to see how they do on my trip to Colorado in the winter and in the snow and Offroad trails next month!
Date published: 2020-01-31
Rated 5 out of 5 by from Best Hawai’i tire Put almost 60,000 miles on these tires and they are finally bald, here in Hawaii everywhere we drive off road is sharp lava rock and I never had one issue with these tires the three ply side walls are super solid, I am a 20year old male that hunts fishes and dives a lot here in Hawaii and I put about 15k miles on my truck a year and I’d say at least a quarter of those miles is off road. Best tires I’ve ever had definitely will be getting another set in a couple days , oh and the tires are on a 05 tundra
Date published: 2020-01-30
Rated 5 out of 5 by from Buying another set for my new truck 3 years and 55,000 miles ago I spent the extra $ based on my local tire shop and I cant say enough good about these tires. I put them on a 2005 Chevy 2500HD and still have at least another 20,000 miles left on the tread. Great ride and pulls good in Alabama Mud, and for those of you that gave ever experienced Alabama red clay you understand.
Date published: 2020-01-11
Rated 5 out of 5 by from plow truck tires Excellent tire for plowing. Put a set on 2018 silverado, absolutely zero traction issues.
Date published: 2020-01-07
Rated 4 out of 5 by from Initial review after a few months of use. I bought these for those trips when I know I will be off-roading or in deep snow/off-road snow. So I only put them on for that kind of trip, which may nevertheless include several hundred miles of highway driving to and from the fun stuff. They started out quiet on the highway, but get a little noisier after break-in. I consider the road noise to be acceptable for sure. They have performed very well in dry off-road conditions.... they are tough and give a lot of confidence, even on sharp rocky terrain. The side-walls are obviously going to stand up to more abuse. Haven't had them in serious mud, so not sure about that. Have had them in various kinds of snow, including deep firm snow. I was happy with what they could do, but no question that firm snow beyond a few inches will eventually require chains. With chains on all 4 tires, it takes a lot to stop them! Also recently drove a bunch of miles off-road in 6" fresh snow, and they did great, even on the difficult 4x4 sections..... never needed the chains. Also did about 400 miles on the highway with fresh snow/slick, icy conditions/night driving....... and they felt good. The traction and handling generally made me feel pretty confident in those conditions. Can't speak to tire wear yet, since I don't use them that much.
Date published: 2019-12-07
Rated 5 out of 5 by from Dont buy anything else for mild off road Just checked the wear and used about a third of the tread over 45000KM's. (31x10.50-15). Used them a lot on rough trails with broken shale, no cuts or bruises. Hit a trailer ramp on the Hi-way at night at about 70KPH, no damage to tire or truck! Balance is still great, no pulling, no excessive noise, lack of wear is un-believable! I don't run them in the winter because of salt corroding the mags, but would expect them to do great in heavy deep snow, and as good as any other non winter tire on icey/lightly snowy roads. Don't buy anything else!
Date published: 2019-12-04
Rated 3 out of 5 by from Tough, but no tread longevity This was my third set of Coopers. These perform for tough country, dry/wet and snow. Tread wear is garbage and a real let down. I used as my daily driver tire. I was super excited to use these for a few years and was willing to pay the premium. 28,000 miles, 1.5 year later and I have to replace at 4/32. I expected at minimum 40-50,000 miles from my previous Cooper tire experiences. They will get you anywhere, but keep for a tough country tire/4x4 only. No mileage warranty offered. Moving to ATP series.
Date published: 2019-12-04
Rated 1 out of 5 by from Terrible I’ve had 5 sets of ST MAXX tires on 2 work trucks. I’ve had 2 blow outs, 2 twisted belts and 1 with what the dealer called a “rock bruise”. All occurred between 17,000 to 19,000 miles. For what they cost they are terrible for a work truck on the farm. Don’t waste your money.
Date published: 2019-11-12
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