Cooper Discoverer STT PRO Max Traction Mud Terrain Tire for 4x4 Trucks & SUVs in LT285/65R18

Off-Road Maximum Traction

Wheel not included

CooperDiscoverer STT PRO
  • CooperDiscoverer STT PRO
  • CooperDiscoverer STT PRO
Tire Rack Test
$ 406.99 Per Tire
4 In Stock, Special Order Available

Set of 4: $1,627.96

  • Size: LT285/65R18
  • Style: Raised White Letter
  • Eco Focus: N/A
  • Load Range: E Load Range
Free Road Hazard Protection$159.76 value. Two-year coverage.
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Set of 4: $ 1,627.96
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Sizes for: Cooper Discoverer STT PRO

Selected Size: LT285/65R18

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* Eco Focus: N/A

Tire Rack Test Results Cooper Discoverer STT PRO

Testing Off-Road Maximum Traction Tires 2021: Cooper Discoverer STT Pro(2:21)

The Cooper Discoverer STT Pro brings capable, backcountry traction to the table, but does it have what it takes to compete on the road where many of its rivals are also built to perform?

Read the Full Test Report

Ratings Charts & Reviews CooperDiscoverer STT PRO

Tire Category: Off-Road Maximum Traction

Consumer Surveys

 
Compare
Best in Category
Price
Miles Reported
Recommended
Treadwear
Cooper Discoverer STT PRO
Good
95%
$407
1.7M
8.1 - Good
9.3 - Excellent
9.5 Dirt Traction
9.2 Sand Traction
9.3 Mud Traction
9.1 Rock Traction
8.7 - Excellent
8.7 Hydroplaning Resistance
8.6 Wet Traction
8.9 - Excellent
8.8 Corner Stability
9.3 Dry Traction
8.8 Steering Response
8.1 - Good
8.5 Light Snow Traction
8.7 Deep Snow Traction
7.2 Ice Traction
7.5 - Good
7.9 Ride Quality
7.0 Noise
7.6 - Good

Customers Say

Feedback patterns show the Cooper Discoverer STT PRO excels in dry traction (9-10 scores) with outstanding off-road grip and rock-crawling capability. Wet traction earns strong marks (7-10), handling mud and light hydroplaning well. Winter performance shines in deep snow (8-10), though ice traction varies (3-10). Treadwear scores split between excellent (8-10) and lower durability notes (1-7), typical for aggressive off-road use. Comfort receives praise for ride smoothness (7-10) despite some noise complaints (1-8), expected in this category. Drivers consistently highlight its rugged dependability in extreme conditions, aligning with its "Off-Road Maximum Traction" purpose.

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Customers Like:

100 customers mention "Wet Traction"

  • 94 positive
  • 6 negative

Customers praise the Cooper Discoverer STT PRO's wet traction, with most ratings between 8-10. High scores highlight excellent grip and stability in wet off-road conditions, while some 7s still reflect reliable performance for a maximum traction tire. Hydroplaning resistance also earns strong 8-10 scores, reinforcing confident wet-weather capability.

February 20, 2020 (Verified Purchase)

5 out of 5 Star Rating
5 out of 5

...Rock crawling mixed with wet mud on a 45 deg. incline...didn't even break traction with them aired down to 15psi...

I had a set of (5) 37/11.5/R17's on my 2018 Jeep Wrangler JL Unlimited Rubicon for 45,000+ miles (all 5 rotated every 10,000 miles) in every terrain South Louisiana can through at them. I also made a 3000 mile trip to Gatlinburg, TN to Buffalo, NY then back to New Orleans, LA in 5 days and they preformed flawlessly. These tires are amazing! Quietest road noise of any mud tire out there! They handle exceptional on road in daily driving, my 21 mile (one way) trip to and from work on highway was a Brees. The city roads and even the extreme pot holes on the streets of downtown New Orleans felt non-existent. The Off Road traction and capabilities of these tires are outstanding! Rock crawling mixed with wet mud on a 45 deg. incline...didn't even break traction with them aired down to 15psi. You want a tire that will give you (in my opinion) the best multi purpose use daily...Look no further!

NOTE: This was my first ever set of mud tires, didn't really expect to get 45,000 miles. I really should have rotated them much more often...I started to get some vibration in the front end around 35,000 miles. Now, part of this was do to not having adjustable track bars front and rear of my Jeep when I installed the 2" Mopar lift causing ware and tare. The other part was the tire rotation intervals...had I done them every 3,000 miles, I would have prolonged the life of the tires to 60,000 mile easily and prevented some of the ware and tare on the steering components. The uneven ware caused by the lack of rotations made the vibrations and noise in the tires to much.

Vehicle: 2018 Jeep Wrangler JL Unlimited(All New) Rubicon
Miles Driven on Tires: 45,000
Driving Conditions: Combined Off Road/Highway
Location: DESTREHAN, LA
Driving Style: Spirited
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77 customers mention "Winter Traction"

  • 68 positive
  • 9 negative

Customers praise the Cooper Discoverer STT PRO's winter traction, with most scoring snow and deep snow performance 8-10 for excellent off-road grip. Ice traction shows mixed feedback (scores 0-10) but maintains solid capability in rugged conditions. High marks highlight reliable traction in challenging winter terrain.

January 25, 2024 (Verified Purchase)

4.2 out of 5 Star Rating
4.2 out of 5

...i use them for going through deep snow. i run them at 15 to 10ish PSI i have had really good luck with them would recommend them if you go through deep snow...

I really like the tires i use them for going through deep snow. i run them at 15 to 10ish PSI i have had really good luck with them would recommend them if you go through deep snow. even at low PSI i haven't had them de-bead.



Vehicle: 1996 Chevrolet Suburban 1500 4wd
Miles Driven on Tires: 2,000
Driving Conditions: Off Road
Location: IDAHO FALLS, ID
Driving Style: Spirited
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April 02, 2018

3.5 out of 5 Star Rating
3.5 out of 5

...they're great in the mud and deep snow but absolutely terrible on ice, again it's a mud tire though...

I've heard people complain about the noise these tires make but it's a mud tire what do you expect. they're great in the mud and deep snow. but absolutely terrible on ice, again it's a mud tire though. they're wearing pretty evenly and I try to rotate them every 5-8k. look great, really aggressive tread if that's what you're looking for.

Vehicle: 2011 Chevrolet Silverado 1500 4wd Crew Cab
Miles Driven on Tires: 40,000
Driving Conditions: Combined Highway/City
Location: CAISTOR CENTRE, ON
Driving Style: Average
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February 24, 2019 (Verified Purchase)

4.9 out of 5 Star Rating
4.9 out of 5

...The tire exceeds expectations on snow and ice.

Excellent tire for year round use. The tire exceeds expectations on snow and ice.

Vehicle: 2013 Ford F250 4X4 Crew Cab
Miles Driven on Tires: 6,000
Driving Conditions: Combined Off Road/Highway
Location: MALONE, NY
Driving Style: Average
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104 customers mention "Dry Traction"

  • 103 positive
  • 1 negative

Most customers rate dry traction as excellent, with scores of 9-10 highlighting strong grip and responsive handling in rugged off-road conditions. The Discoverer STT PRO delivers reliable performance where it's designed to excel.

April 12, 2019 (Verified Purchase)

4.4 out of 5 Star Rating
4.4 out of 5

I have not encountered a situation where I was disappointed with traction...

I have been very happy with these tires. I drive mostly highway to work but try to get off road on the weekend as much as possible. Noise on the highway is noticeably louder than stock which is to be expected. They are quieter so far than I expected with the size of the lugs. The off road performance has exceeded my expectations. I have done mostly hardpack, sand, and light mud. I have not encountered a situation where I was disappointed with traction. I plan on replacing these with the same tire again. Wear has not been noticeable in the 4000 miles I have driven them. I usually air down to around 15psi when I hit the dirt. I have these paired with some method 702 wheels so I will be trying to air down a little bit more at a time to see how they perform at a lower pressure.

Vehicle: 2018 Toyota Tacoma 4WD Access Cab
Miles Driven on Tires: 4,000
Driving Conditions: Mostly Highway
Location: SAN TAN VALLEY, AZ
Driving Style: Average
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October 01, 2019 (Verified Purchase)

4.7 out of 5 Star Rating
4.7 out of 5

COOPER truck tires are the best kept secret in off road tires. Unbelivable quality, tread life, ultra quiet and can make a mediocre 4x4 a trail monster...

COOPER truck tires are the best kept secret in off road tires. Unbelivable quality, tread life, ultra quiet and can make a mediocre 4x4 a trail monster. Economically priced. I learned of these tires when my buddy lifted his new DT Ram and was floored at how killer they are!!!! Ive bought COOPER in the past and always had terrific luck, but when putting tires on 4x4 pickup with a lift kit I only would buy BF Goodwich All Terrain K/O's, Goodyear MT/R Kevelar or Mickey Thompson Baja's. These COOPER truck tires are just as good and better in a few areas.

Vehicle: 2019 RAM 1500 4WD Crew Cab
Miles Driven on Tires: 17,666
Driving Conditions: Combined Off Road/Highway
Location: BELLEVILLE, IL
Driving Style: Spirited
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February 12, 2020 (Verified Purchase)

4.8 out of 5 Star Rating
4.8 out of 5

...I never have traction issues. I would recommend these tires to anyone that wants the confidence to get where they are going!!!!...

First of all fast service , #1 in my book, the tires are the best i have ever owned. I plow snow and live on a dirt road. I never have traction issues . I would recommend these tires to anyone that wants the confidence to get where they are going!!!! I'm willing to take a little road noise for great traction.

Vehicle: 2018 RAM 3500 4WD Crew Cab
Miles Driven on Tires: 2,400
Driving Conditions: Combined Off Road/Highway
Location: HAMMONDSPORT, NY
Driving Style: Average
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105 customers mention "Ride Quality"

  • 84 positive
  • 21 negative

Customers rate ride comfort highly with many 9s and 10s, praising smooth off-road performance. Some note occasional harshness, but most find it excellent for rugged terrain. Noise levels vary, though scores between 7-8 show solid comfort for maximum traction tires.

January 18, 2023 (Verified Purchase)

4.6 out of 5 Star Rating
4.6 out of 5

My second set of the SST Pro's and still am very impressed with the ride comfort, handling in all terrain types, and longevity. Noise is a little loud but that's expected with such an aggressive tire...

My second set of the SST Pro's and still am very impressed with the ride comfort, handling in all terrain types, and longevity. Noise is a little loud but that's expected with such an aggressive tire. Constantly get complements on how they look. I got about 55k on my first set. I've driven over snow covered donner summit and never had any trouble with traction. They're on the expensive side but definitely worth the investment.

Vehicle: 2013 Toyota Tacoma 4wd Double Cab
Miles Driven on Tires: 10,000
Driving Conditions: Combined Off Road/Highway
Location: ROCKLIN, CA
Driving Style: Average
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January 23, 2022

3.9 out of 5 Star Rating
3.9 out of 5

...I'd say the biggest sacrifice you need to consider when purchasing this tire is how much do you value quite ride and comfort? Highly recommended running what the vehicle manufacture tire pressure specs are in these tires... After a year i decided to put it back to 32psi and what a difference!!...

Tires looks are second to none! Best looking tire for a truck period. Tire is used for mainly daily driving with the idea of weekend warrior and some. For a daily driver, it's not a bad at all for an off-road tire. I'd say the biggest sacrifice you need to consider when purchasing this tire is how much do you value quite ride and comfort? Highly recommended running what the vehicle manufacture tire pressure specs are in these tires. Place I had install the tires recommended me to run these at 55psi . After a year i decided to put it back to 32psi and what a difference!! I have put about 45,000 on these bad boys and i still have 10.5/32 of tread left. If you like compliments buy these tires!!

Vehicle: 2011 GMC Sierra 1500 4wd Extended Cab
Miles Driven on Tires: 45,000
Driving Conditions: Combined Highway/City
Location: LIVONIA, MI
Driving Style: Average
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August 18, 2018 (Verified Purchase)

3.9 out of 5 Star Rating
3.9 out of 5

...These tires are not for the person looking for a smooth and quiet ride... Noisy...but not mud grappler noisy...

This would be my second set of STT PROS. The first set was on my Ram 2500. These tires are not for the person looking for a smooth and quiet ride. I have had no balancing issues with these tires. They look amazing on my truck in my opinion. They are awesome offroad and in the mud. Even when not in 4wd. Really good in the snow. Noisy.......but not mud grappler noisy. I think the good out weighs the bad here. Besides the noise I love these tires but feel they are more at home on an HD truck. My 2 cents. Thanks for reading.

Vehicle: 2014 RAM 1500 4WD Crew Cab
Miles Driven on Tires: 3,000
Driving Conditions: Combined Off Road/Highway
Location: ABERDEEN, MD
Driving Style: Average
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98 customers mention "Treadwear"

  • 75 positive
  • 23 negative

Most customers rate treadwear 9-10, highlighting excellent durability in rugged conditions. While some scores dip to 6-8, the STT PRO's longevity impresses off-road users, with many praising its resilience on challenging terrain.

August 11, 2018

4.7 out of 5 Star Rating
4.7 out of 5

...Good looking, long tread wear, puncher resistant... need to be rotated as required...

This tire is great. Everything it promised to be. Good looking, long tread wear, puncher resistant. The only thing I can think off as a negative is they are noisy and need to be rotated as required. I will buy them again and again.

Vehicle: 2008 Ford F150 XLT 4x4 Heavy-Duty 7-Lug
Miles Driven on Tires: 25,000
Driving Conditions: Combined Off Road/Highway
Location: COTTONWOOD, CA
Driving Style: Average
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December 20, 2022 (Verified Purchase)

3.4 out of 5 Star Rating
3.4 out of 5

...First 4k miles feels like you're driving on ice, vehicle wanders a lot, starts to settle down after some miles on them, still won't balance though. Tread wear has been good so far...

Do not balance well, have had them balanced twice now. First 4k miles feels like you're driving on ice, vehicle wanders a lot, starts to settle down after some miles on them, still won't balance though. Tread wear has been good so far, bought them do to tread design and size was out of stock in my preferred brand, will probably not buy again unless unable to get the brand I want. Definitely not the worst tire I have owned, but far from what I expected at the price.

Vehicle: 2018 GMC Sierra 3500 HD 4WD Single Rear Wheel
Miles Driven on Tires: 6,000
Driving Conditions: Combined Off Road/Highway
Location: EUREKA, NV
Driving Style: Average
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Consumer Reviews

Media Gallery

Testing Off-Road Maximum Traction Tires 2021: Cooper Discoverer STT Pro(2:21)

The Cooper Discoverer STT Pro brings capable, backcountry traction to the table, but does it have what it takes to compete on the road where many of its rivals are also built to perform?

Read the Full Test Report

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