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Head-to-head Updated

Cooper Discoverer HT3 vs Michelin Defender LTX M/S — 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 + 1 road tests and 99 + 11 owner reviews. How we score

Defender LTX M/S is ahead, 79–68

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Michelin Defender LTX M/S
Tire BMichelin

Defender LTX M/S

All Season

± 7Provisional

Tests – · 1 test Owners 83 · 11 reviews

Best test result: #2 of 13 in 2022 Consumer Reports All Season Truck Tires (tested tread life (miles))

Category by category

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

  1. 68

    Dry

    Defender LTX M/S +11
    79
    Why this score
    SourceDiscoverer HT3Defender LTX M/S
    Professional tests (TWG score)≈ 68 (est.)≈ 75 (est.)
    Reviews found online6984

    Discoverer HT3: 60% × 68.2 (est.) + 40% × 68.6 = 68

    Defender LTX M/S: 60% × 74.7 (est.) + 40% × 84.3 = 79

    No road tests of dry for Discoverer HT3. 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 Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 74

    Wet

    Defender LTX M/S +8
    82
    Why this score
    SourceDiscoverer HT3Defender LTX M/S
    Professional tests (TWG score)≈ 74 (est.)≈ 79 (est.)
    Reviews found online7686

    Discoverer HT3: 60% × 73.5 (est.) + 40% × 75.9 = 74

    Defender LTX M/S: 60% × 78.8 (est.) + 40% × 85.6 = 82

    No road tests of wet for Discoverer HT3. 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 Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 64

    Snow

    Defender LTX M/S +10
    74
    Why this score
    SourceDiscoverer HT3Defender LTX M/S
    Professional tests (TWG score)≈ 67 (est.)≈ 72 (est.)
    Reviews found online5977

    Discoverer HT3: 60% × 66.9 (est.) + 40% × 59.1 = 64

    Defender LTX M/S: 60% × 72.5 (est.) + 40% × 76.6 = 74

    No road tests of snow for Discoverer HT3. 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 Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 60

    Comfort

    Defender LTX M/S +15
    75
    Why this score
    SourceDiscoverer HT3Defender LTX M/S
    Professional tests (TWG score)≈ 66 (est.)≈ 70 (est.)
    Reviews found online5678

    Discoverer HT3: 40% × 66.1 (est.) + 60% × 56.2 = 60

    Defender LTX M/S: 40% × 70.5 (est.) + 60% × 77.7 = 75

    No road tests of comfort for Discoverer HT3. 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 Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 67

    Noise

    No comparison
    –
    Why this score
    SourceDiscoverer HT3Defender LTX M/S
    Professional tests (TWG score)≈ 66 (est.)–
    Reviews found online68–

    Discoverer HT3: 60% × 66.4 (est.) + 40% × 67.9 = 67

    No road tests of noise for Discoverer HT3. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 68

    Treadwear

    Defender LTX M/S +12
    80
    Why this score
    SourceDiscoverer HT3Defender LTX M/S
    Professional tests (TWG score) · – / 1 tests≈ 67 (est.)75
    Reviews found online6986

    Discoverer HT3: 60% × 67.4 (est.) + 40% × 69 = 68

    Defender LTX M/S: 60% × 75.4 + 40% × 86.3 = 80

    No road tests of treadwear for Discoverer HT3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 66

    Handling (owners)

    Defender LTX M/S +16
    82
    Why this score
    SourceDiscoverer HT3Defender LTX M/S
    Reviews found online6682
Scores at a glance
CategoryCooper Discoverer HT3Michelin Defender LTX M/S
Relative Score 68 79
Dry 68 79
Wet 74 82
Snow 64 74
Comfort 60 75
Noise 67 –
Treadwear 68 80
Handling (owners) 66 82

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
± 7

Discoverer HT3

± 7

Defender LTX M/S

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 HT3

Pros

  • Smooth and comfortable ride quality
  • Excellent performance and stability when towing heavy loads or fifth wheels
  • Good traction in rain and winter conditions

Cons

  • Some users report higher-than-expected road noise on certain vehicles
  • Treadwear may fall short of advertised or expected mileage milestones for some drivers
  • Isolated reports of structural failures or blowouts
All owner themes in the Discoverer HT3 review

Tire B Defender LTX M/S

Pros

  • Exceptional tread life and long-term durability, often exceeding 60,000 miles
  • Smooth, quiet, and comfortable highway ride quality
  • Strong traction and secure handling in wet, dry, and moderate snow conditions

Cons

  • High initial purchase price compared to competitors
  • Subpar off-road performance, specifically struggling in mud, sand, and loose gravel
  • Limited ice performance compared to dedicated winter tires
All owner themes in the Defender LTX M/S review

Specs side by side

Attribute A · Cooper Discoverer HT3 B · Michelin Defender LTX M/S
CategoryAll-Season tireAll Season
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available17—
Rim diameters15″ – 20″—
Tread depth14 - 15/32″—
UTQG—720 - 800 B A
Treadwear warranty50,000 mi—
SidewallBlack Side Wall—
Max pressure50 - 83 psi—

Which one should you actually buy?

Cooper Discoverer HT3

Michelin Defender LTX M/S

Winner: Michelin Defender LTX M/S — better handling, comfort and treadwear. It leads or ties in every category we score. Michelin Defender LTX M/S rests on little evidence so far (1 test, 11 reviews), so read this result as provisional.

Pick tire B You enjoy sharp, responsive handling

Michelin Defender LTX M/S scores 82 vs 66 on handling.

Pick tire B You want the most comfortable ride

Michelin Defender LTX M/S scores 75 vs 60 on comfort.

Pick tire B You want the longest tread life

Michelin Defender LTX M/S scores 80 vs 68 on treadwear.

Pick tire B You want the most grip on dry roads

Michelin Defender LTX M/S scores 79 vs 68 on dry.

Tire A · Cooper Discoverer HT3
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Tire B · Michelin Defender LTX M/S
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Discoverer HT3 or Defender LTX M/S?

Which is better in the wet, Discoverer HT3 or Defender LTX M/S?

Michelin Defender LTX M/S, 82 vs 74 on our wet score.

Which grips better on dry roads, Discoverer HT3 or Defender LTX M/S?

Michelin Defender LTX M/S, 79 vs 68 on our dry score.

Which is better in snow, Discoverer HT3 or Defender LTX M/S?

Michelin Defender LTX M/S, 74 vs 64 on our snow score.

Which is more comfortable, Discoverer HT3 or Defender LTX M/S?

Michelin Defender LTX M/S, 75 vs 60 on our comfort score.

Which lasts longer, Discoverer HT3 or Defender LTX M/S?

Michelin Defender LTX M/S, 80 vs 68 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