tirewheelguide
Head-to-head Updated

Toyo Open Country A/T II vs Kumho Road Venture AT51 — 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 0 + 0 road tests and 3 + 154 owner reviews. How we score

Check price on Amazon · Open Country A/T II Check price on Amazon · Road Venture AT51
Add your size for an exact match
/R

Both Amazon links then search this exact size.

TireWheelGuide may earn a commission from purchases made through these links.

Category by category

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

  1. –

    Dry

    No comparison
    67
    Why this score
    SourceOpen Country A/T IIRoad Venture AT51
    Professional tests (TWG score)–≈ 68 (est.)
    Reviews found online–67

    Road Venture AT51: 60% × 67.6 (est.) + 40% × 67.2 = 67

    No road tests of dry for Road Venture AT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. –

    Wet

    No comparison
    70
    Why this score
    SourceOpen Country A/T IIRoad Venture AT51
    Professional tests (TWG score)–≈ 70 (est.)
    Reviews found online–70

    Road Venture AT51: 60% × 70.1 (est.) + 40% × 69.6 = 70

    No road tests of wet for Road Venture AT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. –

    Snow

    No comparison
    70
    Why this score
    SourceOpen Country A/T IIRoad Venture AT51
    Professional tests (TWG score)–≈ 70 (est.)
    Reviews found online–70

    Road Venture AT51: 60% × 70.2 (est.) + 40% × 69.5 = 70

    No road tests of snow for Road Venture AT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. –

    Comfort

    No comparison
    64
    Why this score
    SourceOpen Country A/T IIRoad Venture AT51
    Professional tests (TWG score)–≈ 67 (est.)
    Reviews found online–63

    Road Venture AT51: 40% × 67.5 (est.) + 60% × 62.5 = 64

    No road tests of comfort for Road Venture AT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. –

    Noise

    No comparison
    63
    Why this score
    SourceOpen Country A/T IIRoad Venture AT51
    Professional tests (TWG score)–≈ 66 (est.)
    Reviews found online–59

    Road Venture AT51: 60% × 66.3 (est.) + 40% × 58.8 = 63

    No road tests of noise for Road Venture AT51. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. –

    Treadwear

    No comparison
    61
    Why this score
    SourceOpen Country A/T IIRoad Venture AT51
    Professional tests (TWG score)–≈ 64 (est.)
    Reviews found online–58

    Road Venture AT51: 60% × 63.5 (est.) + 40% × 58.1 = 61

    No road tests of treadwear for Road Venture AT51. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. –

    Handling (owners)

    No comparison
    62
    Why this score
    SourceOpen Country A/T IIRoad Venture AT51
    Reviews found online–62
Scores at a glance
CategoryToyo Open Country A/T IIKumho Road Venture AT51
Relative Score – 66
Dry – 67
Wet – 70
Snow – 70
Comfort – 64
Noise – 63
Treadwear – 61
Handling (owners) – 62

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
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score

Open Country A/T II

± 7

Road Venture AT51

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 Open Country A/T II

Pros

  • Appealing aggressive aesthetic design with symmetrical hydro evacuation sidewall edges
  • Low road noise levels during normal driving conditions
  • Manufactured domestically in the USA or Japan

Cons

  • Subpar grip and traction in wet and rainy conditions
  • Poor performance and lack of safety on slippery and icy roads
  • Stiff sidewalls and difficulty achieving optimal tire warmth for cornering grip
All owner themes in the Open Country A/T II review

Tire B Road Venture AT51

Pros

  • Exceptional value and affordable price point compared to premium competitors
  • Impressive traction and confidence in snow and winter conditions
  • Quiet and smooth highway ride with minimal road noise for an all-terrain tire

Cons

  • Faster-than-expected tread wear for some users under heavy or everyday use
  • Poor self-cleaning capabilities in deep or heavy mud
  • Reduced wet traction and potential slippage when the tread wears low
All owner themes in the Road Venture AT51 review

Specs side by side

Attribute A · Toyo Open Country A/T II B · Kumho Road Venture AT51
CategoryAll-Terrain tireAll-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available—10
Rim diameters—15″ – 18″
Tread depth13 - 17/32″13.5/32″
UTQG600 A B540 A A
Treadwear warranty—55,000 mi
SidewallBlack Side Wall - Raised Outline White LetteringBlackwall
Max pressure44 - 80 psi65 psi

Which one should you actually buy?

Toyo Open Country A/T II

Kumho Road Venture AT51

Only Kumho Road Venture AT51 has enough test and review data for a Relative Score, so there is no head-to-head winner yet.

Tire A · Toyo Open Country A/T II
Check price on Amazon
Tire B · Kumho Road Venture AT51
Check price on Amazon

TireWheelGuide may earn a commission from purchases made through these links.

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