Tests – · none yet Owners 60 · 421 reviews
“New shoes. Cooper Discoverer STT Pro. 285/75/16”
Head-to-head
Updated
Cooper Discoverer STT PRO vs Toyo Open Country WT — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 0 road tests and 421 + 5 owner reviews. How we score
Open Country WT is ahead, 75–64
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Tests – · none yet Owners 78 · 5 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
65
Dry
Open Country WT +1075Why this score
Source Discoverer STT PRO Open Country WT Professional tests (TWG score) ≈ 66 (est.) ≈ 72 (est.) Reviews found online 63 79 Discoverer STT PRO: 60% × 65.8 (est.) + 40% × 63 = 65
Open Country WT: 60% × 72.3 (est.) + 40% × 79.1 = 75
No road tests of dry for Discoverer STT PRO. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).
No road tests of dry for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).
-
67
Wet
Open Country WT +1279Why this score
Source Discoverer STT PRO Open Country WT Professional tests (TWG score) ≈ 68 (est.) ≈ 77 (est.) Reviews found online 66 83 Discoverer STT PRO: 60% × 67.6 (est.) + 40% × 65.8 = 67
Open Country WT: 60% × 77.1 (est.) + 40% × 82.9 = 79
No road tests of wet for Discoverer STT PRO. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).
No road tests of wet for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).
-
66
Snow
Open Country WT +672Why this score
Source Discoverer STT PRO Open Country WT Professional tests (TWG score) ≈ 68 (est.) ≈ 71 (est.) Reviews found online 64 74 Discoverer STT PRO: 60% × 67.9 (est.) + 40% × 63.9 = 66
Open Country WT: 60% × 71.1 (est.) + 40% × 73.6 = 72
No road tests of snow for Discoverer STT PRO. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).
No road tests of snow for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).
-
60
Comfort
Open Country WT +1373Why this score
Source Discoverer STT PRO Open Country WT Professional tests (TWG score) ≈ 66 (est.) ≈ 70 (est.) Reviews found online 52 77 Discoverer STT PRO: 60% × 66.1 (est.) + 40% × 51.7 = 60
Open Country WT: 60% × 70.4 (est.) + 40% × 76.6 = 73
No road tests of comfort for Discoverer STT PRO or Open Country WT. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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54
Noise
No comparison–Why this score
Source Discoverer STT PRO Open Country WT Professional tests (TWG score) ≈ 67 (est.) – Reviews found online 33 – Discoverer STT PRO: 60% × 67.3 (est.) + 40% × 33.3 = 54
No road tests of noise for Discoverer STT PRO. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
63
Treadwear
Open Country WT +871Why this score
Source Discoverer STT PRO Open Country WT Professional tests (TWG score) ≈ 64 (est.) ≈ 68 (est.) Reviews found online 62 75 Discoverer STT PRO: 60% × 64.5 (est.) + 40% × 61.9 = 63
Open Country WT: 60% × 68.4 (est.) + 40% × 74.5 = 71
No road tests of treadwear for Discoverer STT PRO. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
No road tests of treadwear for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
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54
Handling (owners)
Open Country WT +2680Why this score
Source Discoverer STT PRO Open Country WT Reviews found online 54 80
Scores at a glance
| Category | Cooper Discoverer STT PRO | Toyo Open Country WT |
|---|---|---|
| Relative Score | 64 | 75 |
| Dry | 65 | 75 |
| Wet | 67 | 79 |
| Snow | 66 | 72 |
| Comfort | 60 | 73 |
| Noise | 54 | – |
| Treadwear | 63 | 71 |
| Handling (owners) | 54 | 80 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip starts at “Important”. Treadwear starts at “Neutral” here: road tests measured it for at most one of the two tires, so it rests on owner reviews. Move the sliders and the scores update instantly.
Important
NotLessNeutralImportantMost
Important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
64
/ 100
Discoverer STT PRO
75
/ 100
Open Country WT
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Discoverer STT PRO
Pros
- Outstanding off-road traction in mud, rocks, and dirt
- Surprisingly low road noise and smooth ride for a mud-terrain tire
- Aggressive and appealing visual design with tough sidewalls
Cons
- Can be difficult to balance properly, leading to vibrations for some users
- Faster tread wear reported by a subset of drivers under heavy use
- Reduced traction in specific conditions like deep sand or packed snow/ice
Tire B Open Country WT
Pros
- Exceptional performance and traction in snow, ice, slush, and wet weather
- Surprising longevity and slow tread wear over high mileage (20,000 to 30,000 miles)
- Good versatility and capability for light off-road use, unmade tracks, and muddy fields
Cons
- Slightly increased road noise compared to standard road tires, though not overly intrusive
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Positive
Cooper Discoverer STT PRO
Community members widely praise the Cooper Discoverer STT PRO for its exceptional off-road traction, towing capability, and dependable handling in mud, rain, and snow. While users note it balances well and rides comfortably for a mud-terrain tire, the most common criticisms involve pavement road noise that increases with wear and concerns regarding tread life on heavy trucks.
cumminsforum.com
·2016-05-31
“I ran them on my Cherokee for a year. Awesome tire aside from icy roads. I loved the tires off road, They just didnt have enough siping to contend with slippery pavement. Went back to the STT MAXX and had no issues.”
r/Jeep
·72 upvotes ·2024-03-01
“My new tires. Cooper Discoverer STT PRO”
r/FJCruiser
·2 upvotes ·2026-03-21
“I thought I'd throw my two cents in! I put 5 Cooper Discoverer STT Pro tires on my 2015 Nissan Xterra Pro-4 X in 2021. It cannot be overstated - I LOVE these tires! They're great in dry conditions, they're great in the rain, they're great in the snow, they're great on ice - they even drove over a frozen iceberg in my driveway during a winter emergency as though it wasn't even there. There's a little bit of road noise, but nothing terrible. You can definitely "feel" them when you're driving - but I kind of like that. My truck sits outside during all kinds of Ohio weather, and they don't appear to be cracking/dry rotting quite yet. It will technically be "due" for me to get a new set of tires next year. Without a doubt, I'm getting another set of these!! Happy trails, all!”
Top themes
#off-road traction#highway road noise#mud and snow performance#tread wear life#heavy truck towing#balancing and ride quality
Based on 38 community posts
Tire B
Toyo Open Country WT
We haven't collected enough community discussion about this tire yet.
Specs side by side
| Attribute | A · Cooper Discoverer STT PRO | B · Toyo Open Country WT |
|---|---|---|
| Category | Mud-Terrain tire | Winter |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 23 | 8 |
| Rim diameters | 16″ – 20″ | 16″ – 19″ |
| Tread depth | 18 - 22/32″ | — |
| Sidewall | Black Side Wall - Raised White Lettering | — |
| Max pressure | 35 - 80 psi | — |
| Sizes in common | 0 | 0 |
Which one should you actually buy?
64
/ 100
Cooper Discoverer STT PRO
75
/ 100
Toyo Open Country WT
Winner: Toyo Open Country WT — better handling, comfort and wet. It leads or ties in every category we score. Toyo Open Country WT rests on little evidence so far (0 tests, 5 reviews), so read this result as provisional.
Pick tire B
You enjoy sharp, responsive handling
Toyo Open Country WT scores 80 vs 54 on handling.
Pick tire B
You want the most comfortable ride
Toyo Open Country WT scores 73 vs 60 on comfort.
Pick tire B
Your priority is wet-weather safety
Toyo Open Country WT scores 79 vs 67 on wet.
Pick tire B
You want the most grip on dry roads
Toyo Open Country WT scores 75 vs 65 on dry.
Tire A · Cooper Discoverer STT PRO
Tire B · Toyo Open Country WT
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Discoverer STT PRO or Open Country WT?
Which is better in the wet, Discoverer STT PRO or Open Country WT?
Toyo Open Country WT, 79 vs 67 on our wet score.
Which grips better on dry roads, Discoverer STT PRO or Open Country WT?
Toyo Open Country WT, 75 vs 65 on our dry score.
Which is better in snow, Discoverer STT PRO or Open Country WT?
Toyo Open Country WT, 72 vs 66 on our snow score.
Which is more comfortable, Discoverer STT PRO or Open Country WT?
Toyo Open Country WT, 73 vs 60 on our comfort score.
Which lasts longer, Discoverer STT PRO or Open Country WT?
Toyo Open Country WT, 71 vs 63 on our treadwear score.
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements), each result compared with every other tire in the same test and newer tests counting more. 40% comes from owner reviews found online, adjusted for how generously each site rates. Both use one scale: the average tested tire gets 70, the best 100. When a tire has only one of the two, the missing half is estimated from the other and the score stays closer to average; with no road test and fewer than five owner reviews it gets no score yet.
Handling is the exception: road tests measure it inside the dry and wet scores, so its own row comes from owner ratings only and starts as less important.
Community buzz from Reddit and forums is shown for context only — it never changes the score. Full methodology