88
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
88/100
356 owner reviews
Prices change daily — check the retailer for your size.
Head-to-head
Updated May 2026
Cooper Discoverer STT PRO vs Toyo Open Country M/T — Compared (May 2026)
Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.
VS
90
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
90/100
187 owner reviews
Prices change daily — check the retailer for your size.
VerdictWinner: Toyo Open Country M/T — better noise and treadwear. It leads or ties in every category we score.
Read full
TireWheelGuide may earn a commission from purchases made via links on this page.
Category breakdown
7 categories, side by side
Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.
Dry
Score (0–100)
Why this score
| Source | Discoverer STT PRO | Open Country M/T |
|---|---|---|
| Tire Rack owners | 87 | 84 |
| Tyre Reviews owners | 81 | 73 |
| SimpleTire owners | 94 | 97 |
| America's Tire owners | 96 | – |
Wet
Score (0–100)
Why this score
| Source | Discoverer STT PRO | Open Country M/T |
|---|---|---|
| Tire Rack owners | 93 | 95 |
| Tyre Reviews owners | 71 | 70 |
| SimpleTire owners | 91 | 93 |
| America's Tire owners | 91 | – |
Snow
Score (0–100)
Open Country M/T leads by 1
Why this score
| Source | Discoverer STT PRO | Open Country M/T |
|---|---|---|
| Tire Rack owners | 90 | 88 |
| Tyre Reviews owners | 63 | 68 |
| SimpleTire owners | 91 | 90 |
Comfort
Score (0–100)
Open Country M/T leads by 2
Why this score
| Source | Discoverer STT PRO | Open Country M/T |
|---|---|---|
| Tire Rack owners | 81 | 83 |
| Tyre Reviews owners | 66 | 60 |
| SimpleTire owners | 89 | 91 |
| America's Tire owners | 88 | – |
Noise
Score (0–100)
Open Country M/T leads by 7
Why this score
| Source | Discoverer STT PRO | Open Country M/T |
|---|---|---|
| SimpleTire owners | 79 | 82 |
| America's Tire owners | 78 | – |
Treadwear
Score (0–100)
Open Country M/T leads by 3
Why this score
| Source | Discoverer STT PRO | Open Country M/T |
|---|---|---|
| Tire Rack owners | 75 | 80 |
| Tyre Reviews owners | 90 | 72 |
| SimpleTire owners | 84 | 90 |
| America's Tire owners | 87 | – |
Handling
Score (0–100)
Open Country M/T leads by 2
Why this score
| Source | Discoverer STT PRO | Open Country M/T |
|---|---|---|
| Tyre Reviews owners | 70 | 70 |
| America's Tire owners | 90 | – |
Scores at a glance
| Category | Cooper Discoverer STT PRO | Toyo Open Country M/T |
|---|---|---|
| Relative Score | 88 | 90 |
| Dry | 95 | 95 |
| Wet | 91 | 91 |
| Snow | 88 | 89 |
| Comfort | 88 | 90 |
| Noise | 78 | 85 |
| Treadwear | 86 | 89 |
| Handling | 89 | 91 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Personalize
Weight the categories that matter to you
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Neutral
NoneLessNeutralMoreMost
Important
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Important
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Recomputed
Headline score
88
/ 100
Tire A
90
/ 100
Tire B
From owners
Pros, cons & observations
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
Not enough owner reviews yet to extract themes.
The Toyo Open Country M/T is widely regarded as a premium, high-performance mud-terrain tire that balances aggressive off-road capability with surprisingly refined on-road manners. While users frequently praise its exceptional durability, puncture resistance, and longevity, some note that its heavy construction can impact fuel economy and ride comfort on pavement.
Pros
- Exceptional off-road traction in mud, dirt, and gravel
- Impressive tread life and durability for a mud-terrain tire
- Surprisingly low road noise compared to competitors
- Strong, puncture-resistant sidewalls
- Reliable performance in snow and wet conditions
Cons
- High price point compared to other options
- Significant weight can negatively impact fuel economy
- Stiff ride quality, particularly on lighter vehicles or when overinflated
- Occasional reports of balancing issues or vibrations
- Reduced traction on ice
Observations
- Heavy-duty diesel truck owners frequently report excellent longevity and load-carrying stability, often citing 50k-60k+ mile tread life.
- Jeep and light-duty truck owners note that the tire's stiff sidewalls can make for a 'harsh' ride unless tire pressure is adjusted specifically for daily driving.
- Users running larger sizes (37-inch+) emphasize the importance of regular 5,000-mile rotations to prevent uneven wear and maintain ride quality.
Specifications
Specs side by side
| Attribute | A · Cooper Discoverer STT PRO | B · Toyo Open Country M/T |
|---|---|---|
| Category | All Season All Terrain and Off Road tires | All Season All Terrain and Off Road tires |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 23 | 35 |
| Rim diameters | 16″ – 20″ | 16″ – 24″ |
| Tread depth | 18 - 22/32″ | 18.4/32″ |
| Sidewall | Black Side Wall - Raised White Lettering | Blackwall |
| Max pressure | 35 - 80 psi | 80 psi |
Final verdict
Which one should you actually buy?
88
/ 100
Cooper
90
/ 100
Toyo
Winner: Toyo Open Country M/T — better noise and treadwear. It leads or ties in every category we score.
Pick tire B
You want a quieter cabin
Toyo Open Country M/T scores 85 vs 78 on noise.
Pick tire B
You want the longest tread life
Toyo Open Country M/T scores 89 vs 86 on treadwear.
Tire A · Cooper Discoverer STT PRO
Tire B · Toyo Open Country M/T
More comparisons
Also compared with
Cooper Discoverer STT PRO also compared with
Toyo Open Country M/T also compared with
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.
Community buzz from Reddit and forums is shown for context only — it never changes the score.