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Cooper Discoverer AT3 4S vs Kumho Road Venture MT51 — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 1 + 0 road tests and 688 + 27 owner reviews. How we score

Discoverer AT3 4S is ahead, 79–60

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Cooper Discoverer AT3 4S
Tire ACooper

Discoverer AT3 4S

All-Terrain tire

± 7

Tests – · 1 test Owners 84 · 688 reviews

Best test result: #5 of 18 in 2022 Consumer Reports All Terrain Truck Tires (tested tread life (miles))

“Got some 225/75/16 Cooper Discoverer AT3 4s - Great fit on stock setup.”

Category by category

Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.

  1. 81

    Dry

    Discoverer AT3 4S +20
    61
    Why this score
    SourceDiscoverer AT3 4SRoad Venture MT51
    Professional tests (TWG score)≈ 76 (est.)≈ 64 (est.)
    Reviews found online8858

    Discoverer AT3 4S: 60% × 76.4 (est.) + 40% × 88.4 = 81

    Road Venture MT51: 60% × 63.7 (est.) + 40% × 57.6 = 61

    No road tests of dry for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

    No road tests of dry for Road Venture MT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 85

    Wet

    Discoverer AT3 4S +23
    62
    Why this score
    SourceDiscoverer AT3 4SRoad Venture MT51
    Professional tests (TWG score)≈ 82 (est.)≈ 64 (est.)
    Reviews found online9159

    Discoverer AT3 4S: 60% × 81.6 (est.) + 40% × 90.6 = 85

    Road Venture MT51: 60% × 64.3 (est.) + 40% × 58.9 = 62

    No road tests of wet for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

    No road tests of wet for Road Venture MT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 73

    Snow

    Discoverer AT3 4S +10
    63
    Why this score
    SourceDiscoverer AT3 4SRoad Venture MT51
    Professional tests (TWG score)≈ 72 (est.)≈ 66 (est.)
    Reviews found online7558

    Discoverer AT3 4S: 60% × 71.8 (est.) + 40% × 74.5 = 73

    Road Venture MT51: 60% × 66.4 (est.) + 40% × 57.7 = 63

    No road tests of snow for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

    No road tests of snow for Road Venture MT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 80

    Comfort

    Discoverer AT3 4S +22
    58
    Why this score
    SourceDiscoverer AT3 4SRoad Venture MT51
    Professional tests (TWG score)≈ 72 (est.)≈ 66 (est.)
    Reviews found online8554

    Discoverer AT3 4S: 40% × 72 (est.) + 60% × 85.2 = 80

    Road Venture MT51: 40% × 65.6 (est.) + 60% × 53.5 = 58

    No road tests of comfort for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

    No road tests of comfort for Road Venture MT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 73

    Noise

    Discoverer AT3 4S +12
    61
    Why this score
    SourceDiscoverer AT3 4SRoad Venture MT51
    Professional tests (TWG score)≈ 66 (est.)≈ 66 (est.)
    Reviews found online8354

    Discoverer AT3 4S: 60% × 66.4 (est.) + 40% × 83.3 = 73

    Road Venture MT51: 60% × 66.4 (est.) + 40% × 53.7 = 61

    No road tests of noise for Discoverer AT3 4S or Road Venture MT51. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 75

    Treadwear

    Discoverer AT3 4S +17
    58
    Why this score
    SourceDiscoverer AT3 4SRoad Venture MT51
    Professional tests (TWG score) · 1 / – tests71≈ 61 (est.)
    Reviews found online8052

    Discoverer AT3 4S: 60% × 71.1 + 40% × 79.9 = 75

    Road Venture MT51: 60% × 61.4 (est.) + 40% × 52.3 = 58

    No road tests of treadwear for Road Venture MT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 80

    Handling (owners)

    Discoverer AT3 4S +28
    52
    Why this score
    SourceDiscoverer AT3 4SRoad Venture MT51
    Reviews found online8052
Scores at a glance
CategoryCooper Discoverer AT3 4SKumho Road Venture MT51
Relative Score 79 60
Dry 81 61
Wet 85 62
Snow 73 63
Comfort 80 58
Noise 73 61
Treadwear 75 58
Handling (owners) 80 52

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
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Neutral
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Less important
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Neutral
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Recomputed
Headline score
± 7

Discoverer AT3 4S

± 8

Road Venture MT51

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A Discoverer AT3 4S

Pros

  • Exceptionally quiet and smooth on-road ride compared to typical all-terrain tires
  • Superb traction in wet, rainy, and deep winter snow conditions
  • Strong value and competitive pricing relative to performance and lifespan

Cons

  • Potential for accelerated tread wear under heavy off-road use or demanding mountain driving
  • Occasional reports of balancing issues or out-of-round tires requiring multiple adjustments
  • Minor fuel economy drop or increased rolling resistance when switching from standard highway tires
All owner themes in the Discoverer AT3 4S review

Tire B Road Venture MT51

Pros

  • Exceptionally quiet for a mud-terrain tire with minimal highway road noise
  • Strong off-road traction in thick mud, gravel, and rocky terrain
  • Competitive, budget-friendly pricing compared to premium brand alternatives

Cons

  • Reduced grip and slippery handling in heavy rain or wet road conditions
  • Increased tire noise and louder hum as the tread wears down
  • Some reports of premature wear, sidewall cracking, or lower overall mileage
All owner themes in the Road Venture MT51 review

What real owners are saying

From Reddit, forums and review threads. Not part of our score

Tire A

Cooper Discoverer AT3 4S

Positive

Community sentiment for the Cooper Discoverer AT3 4S is predominantly positive, with drivers praising its quiet highway ride, strong traction across snow, rain, and dry pavement, and appealing appearance. Several owners note that while it handles light off-road duties and daily driving well, tread life occasionally falls short of mileage expectations. In addition, multiple posts highlight frustration and concern regarding availability and recent discontinuation across various sizes.

r/subaru ·130 upvotes ·2019-04-20

“New tires 👌 cooper discoverer at3 4s 215/70/16”
r/f150 ·23 upvotes ·2022-09-03

“New tire day. Cooper Discoverer AT3 4S. So far so good. They ride great and they’re really quiet.”
r/SubaruForester ·4 upvotes ·2022-12-02

“Cooper Discoverer AT3 4S discontinued, good alternative? I was hoping to replace my stock tires with the Discoverer AT3 tires since I hear really good things about them and they are a bit more aggressive. Seems like they are discontinued at all the normal tire shops online. So what are my alternatives for an AT style tire? Looking for 235/60R17 to put on Drag DR-31 rims. I live in CO so snow and some light off roading are things to consider. Read more”
Top themes
#Snow and wet traction#Quiet highway ride#Tread life and longevity#Discontinuation and availability#Comfortable ride quality#Mild off-road performance

Based on 27 community posts

Tire B

Kumho Road Venture MT51

We haven't collected enough community discussion about this tire yet.

Specs side by side

Attribute A · Cooper Discoverer AT3 4S B · Kumho Road Venture MT51
CategoryAll-Terrain tireMud-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available141
Rim diameters15″ – 22″16″
Tread depth12 - 14/32″18/32″
UTQG620 A B—
Treadwear warranty65,000 mi—
SidewallBlack Side Wall - Raised Outline White LetteringBlackwall
Max pressure44 - 50 psi80 psi

Which one should you actually buy?

Cooper Discoverer AT3 4S

Kumho Road Venture MT51

Winner: Cooper Discoverer AT3 4S — better handling, wet and comfort. It leads or ties in every category we score.

Pick tire A You enjoy sharp, responsive handling

Cooper Discoverer AT3 4S scores 80 vs 52 on handling.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer AT3 4S scores 85 vs 62 on wet.

Pick tire A You want the most comfortable ride

Cooper Discoverer AT3 4S scores 80 vs 58 on comfort.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 4S scores 81 vs 61 on dry.

Tire A · Cooper Discoverer AT3 4S
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Tire B · Kumho Road Venture MT51
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Discoverer AT3 4S or Road Venture MT51?

Which is better in the wet, Discoverer AT3 4S or Road Venture MT51?

Cooper Discoverer AT3 4S, 85 vs 62 on our wet score.

Which grips better on dry roads, Discoverer AT3 4S or Road Venture MT51?

Cooper Discoverer AT3 4S, 81 vs 61 on our dry score.

Which is better in snow, Discoverer AT3 4S or Road Venture MT51?

Cooper Discoverer AT3 4S, 73 vs 63 on our snow score.

Which is quieter, Discoverer AT3 4S or Road Venture MT51?

Cooper Discoverer AT3 4S, 73 vs 61 on our noise score.

Which is more comfortable, Discoverer AT3 4S or Road Venture MT51?

Cooper Discoverer AT3 4S, 80 vs 58 on our comfort score.

Which lasts longer, Discoverer AT3 4S or Road Venture MT51?

Cooper Discoverer AT3 4S, 75 vs 58 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