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Head-to-head Updated May 2026

Cooper Discoverer STT PRO vs Kumho Road Venture AT51 — 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.

Tire A Cooper

Cooper Discoverer STT PRO

All Season All Terrain and Off Road tires

Cooper Discoverer STT PRO tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
88/100
356 owner reviews
Dry
95
Wet
91
Snow
88
Comfort
88
Noise
78
Treadwear
86
Handling
89
Check price on Amazon

Prices change daily — check the retailer for your size.

VS
Tire B Kumho

Kumho Road Venture AT51

Kumho Road Venture AT51 tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
91/100
71 owner reviews
Dry
95
Wet
90
Snow
88
Comfort
92
Noise
92
Treadwear
91
Handling
91
Check price on Amazon

Prices change daily — check the retailer for your size.

VerdictWinner: Kumho Road Venture AT51 — better noise, treadwear and comfort. It leads or ties in every category we score.
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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

Weight: Neutral
Score (0–100)
A
95
B
95
Why this score
SourceDiscoverer STT PRORoad Venture AT51
Tire Rack owners 87 83
Tyre Reviews owners 81 83
SimpleTire owners 94 96
America's Tire owners 96 –

Wet

Weight: Important
Score (0–100) Discoverer STT PRO leads by 1
A
91
B
90
Why this score
SourceDiscoverer STT PRORoad Venture AT51
Tire Rack owners 93 80
Tyre Reviews owners 71 73
SimpleTire owners 91 93
America's Tire owners 91 –

Snow

Weight: Neutral
Score (0–100)
A
88
B
88
Why this score
SourceDiscoverer STT PRORoad Venture AT51
Tire Rack owners 90 87
Tyre Reviews owners 63 80
SimpleTire owners 91 90

Comfort

Weight: Neutral
Score (0–100) Road Venture AT51 leads by 4
A
88
B
92
Why this score
SourceDiscoverer STT PRORoad Venture AT51
Tire Rack owners 81 79
Tyre Reviews owners 66 80
SimpleTire owners 89 92
America's Tire owners 88 –

Noise

Weight: Neutral
Score (0–100) Road Venture AT51 leads by 14
A
78
B
92
Why this score
SourceDiscoverer STT PRORoad Venture AT51
SimpleTire owners 79 85
America's Tire owners 78 –

Treadwear

Weight: Important
Score (0–100) Road Venture AT51 leads by 5
A
86
B
91
Why this score
SourceDiscoverer STT PRORoad Venture AT51
Tire Rack owners 75 80
Tyre Reviews owners 90 70
SimpleTire owners 84 86
America's Tire owners 87 –

Handling

Weight: Neutral
Score (0–100) Road Venture AT51 leads by 2
A
89
B
91
Why this score
SourceDiscoverer STT PRORoad Venture AT51
Tyre Reviews owners 70 73
America's Tire owners 90 –

Scores at a glance

CategoryCooper Discoverer STT PROKumho Road Venture AT51
Relative Score 88 91
Dry 95 95
Wet 91 90
Snow 88 88
Comfort 88 92
Noise 78 92
Treadwear 86 91
Handling 89 91

Higher is better. The Relative Score follows your weights below; category scores do not change.

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Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.

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Recomputed
Headline score

Tire A

Tire B

From owners

Pros, cons & observations

Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.

Tire A Cooper Discoverer STT PRO

Not enough owner reviews yet to extract themes.

Tire B Kumho Road Venture AT51

The Kumho Road Venture A/T51 is widely regarded as a high-value, all-terrain tire that excels in noise reduction and comfort compared to more aggressive competitors. While most users praise its performance in snow, rain, and gravel, a minority of owners report issues with uneven wear, balancing difficulties, and durability concerns.

Pros

  • Exceptional noise levels for an all-terrain tire
  • Strong value proposition and competitive pricing
  • Reliable traction in snow, ice, and wet conditions
  • Comfortable ride quality on various road surfaces

Cons

  • Reports of premature tread wear and cupping
  • Occasional balancing issues causing vibrations
  • Some concerns regarding puncture resistance
  • Inconsistent performance in deep mud

Observations

  • Users transitioning from more aggressive tires (like the BFG KO2) on Jeeps and trucks frequently report a significant improvement in cabin quietness.
  • Heavy-duty truck owners occasionally report ride quality issues, such as shaking or bouncing, which may be sensitive to specific PSI adjustments.
  • The tire is noted for maintaining good performance characteristics on both older SUVs and modern electric vehicles.
Specifications

Specs side by side

Attribute A · Cooper Discoverer STT PRO B · Kumho Road Venture AT51
CategoryAll Season All Terrain and Off Road tires—
Vehicle typeSUV and 4x4—
Sizes available239
Rim diameters16″ – 20″15″ – 18″
Tread depth18 - 22/32″13.5/32″
UTQG—540 A A
Treadwear warranty—55,000 mi
SidewallBlack Side Wall - Raised White LetteringBlackwall
Max pressure35 - 80 psi65 psi
Final verdict

Which one should you actually buy?

Cooper

Kumho

Winner: Kumho Road Venture AT51 — better noise, treadwear and comfort. It leads or ties in every category we score.

Pick tire B You want a quieter cabin

Kumho Road Venture AT51 scores 92 vs 78 on noise.

Pick tire B You want the longest tread life

Kumho Road Venture AT51 scores 91 vs 86 on treadwear.

Pick tire B You want the most comfortable ride

Kumho Road Venture AT51 scores 92 vs 88 on comfort.

Tire A · Cooper Discoverer STT PRO
Check price on Amazon
Tire B · Kumho Road Venture AT51
Check price on Amazon

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.