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Michelin 4x4 Diamaris looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

BFGoodrich Mud-Terrain T/A KM3 vs Michelin 4x4 Diamaris — 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 123 + 7 owner reviews. How we score

Mud-Terrain T/A KM3 leads, 70–67 Narrow edge

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Category by category

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

  1. 68

    Dry

    4x4 Diamaris +1
    69
    Why this score
    SourceMud-Terrain T/A KM34x4 Diamaris
    Professional tests (TWG score)≈ 68 (est.)≈ 69 (est.)
    Reviews found online6869

    Mud-Terrain T/A KM3: 60% × 68.1 (est.) + 40% × 68.4 = 68

    4x4 Diamaris: 60% × 68.5 (est.) + 40% × 69.3 = 69

    No road tests of dry for Mud-Terrain T/A KM3. 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 4x4 Diamaris. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 73

    Wet

    Mud-Terrain T/A KM3 +3
    70
    Why this score
    SourceMud-Terrain T/A KM34x4 Diamaris
    Professional tests (TWG score)≈ 73 (est.)≈ 70 (est.)
    Reviews found online7470

    Mud-Terrain T/A KM3: 60% × 72.6 (est.) + 40% × 74.2 = 73

    4x4 Diamaris: 60% × 70.4 (est.) + 40% × 70.2 = 70

    No road tests of wet for Mud-Terrain T/A KM3. 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 4x4 Diamaris. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 68

    Snow

    No comparison
    –
    Why this score
    SourceMud-Terrain T/A KM34x4 Diamaris
    Professional tests (TWG score)≈ 69 (est.)–
    Reviews found online67–

    Mud-Terrain T/A KM3: 60% × 69.3 (est.) + 40% × 66.6 = 68

    No road tests of snow for Mud-Terrain T/A KM3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 66

    Comfort

    Level
    66
    Why this score
    SourceMud-Terrain T/A KM34x4 Diamaris
    Professional tests (TWG score)≈ 68 (est.)≈ 68 (est.)
    Reviews found online6564

    Mud-Terrain T/A KM3: 40% × 67.9 (est.) + 60% × 64.8 = 66

    4x4 Diamaris: 40% × 67.8 (est.) + 60% × 64.4 = 66

    No road tests of comfort for Mud-Terrain T/A KM3 or 4x4 Diamaris. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 65

    Noise

    No comparison
    –
    Why this score
    SourceMud-Terrain T/A KM34x4 Diamaris
    Professional tests (TWG score)≈ 66 (est.)–
    Reviews found online63–

    Mud-Terrain T/A KM3: 60% × 66.4 (est.) + 40% × 63.3 = 65

    No road tests of noise for Mud-Terrain T/A KM3. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 68

    Treadwear

    Mud-Terrain T/A KM3 +8
    60
    Why this score
    SourceMud-Terrain T/A KM34x4 Diamaris
    Professional tests (TWG score)≈ 68 (est.)≈ 63 (est.)
    Reviews found online7056

    Mud-Terrain T/A KM3: 60% × 67.7 (est.) + 40% × 69.7 = 68

    4x4 Diamaris: 60% × 62.6 (est.) + 40% × 55.7 = 60

    No road tests of treadwear for Mud-Terrain T/A KM3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

    No road tests of treadwear for 4x4 Diamaris. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. –

    Handling (owners)

    No comparison
    70
    Why this score
    SourceMud-Terrain T/A KM34x4 Diamaris
    Reviews found online–70
Scores at a glance
CategoryBFGoodrich Mud-Terrain T/A KM3Michelin 4x4 Diamaris
Relative Score 70 67
Dry 68 69
Wet 73 70
Snow 68 –
Comfort 66 66
Noise 65 –
Treadwear 68 60
Handling (owners) – 70

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

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

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

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

Recomputed
Headline score
± 8

Mud-Terrain T/A KM3

± 8

4x4 Diamaris

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 Mud-Terrain T/A KM3

Pros

  • Outstanding off-road and mud traction
  • Surprisingly quiet and comfortable on the highway for a mud-terrain tire
  • Impressive tread wear and longevity

Cons

  • Do not perform quite as well as dedicated road tires during on-road driving
All owner themes in the Mud-Terrain T/A KM3 review

Tire B 4x4 Diamaris

Pros

  • Exceptional handling precision and steering response
  • High levels of ride comfort and low road noise
  • Strong performance on dry pavement

Cons

  • Rapid tread wear and disappointing overall mileage
  • High price point relative to the lifespan of the tire
  • Inconsistent wet weather grip and confidence
All owner themes in the 4x4 Diamaris review

Specs side by side

Attribute A · BFGoodrich Mud-Terrain T/A KM3 B · Michelin 4x4 Diamaris
CategoryMud-Terrain tireSummer
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available27—
Rim diameters16″ – 20″—
Tread depth18/32″—
UTQG—220 AA A
SidewallRaised Black Lettering—
Max pressure45 - 80 psi—

Which one should you actually buy?

BFGoodrich Mud-Terrain T/A KM3

Michelin 4x4 Diamaris

Narrow edge: BFGoodrich Mud-Terrain T/A KM3 — better treadwear and wet. Where the Michelin 4x4 Diamaris is ahead, it is by less than 3 points. Michelin 4x4 Diamaris rests on little evidence so far (0 tests, 7 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

BFGoodrich Mud-Terrain T/A KM3 scores 68 vs 60 on treadwear.

Pick tire A Your priority is wet-weather safety

BFGoodrich Mud-Terrain T/A KM3 scores 73 vs 70 on wet.

Tire A · BFGoodrich Mud-Terrain T/A KM3
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Tire B · Michelin 4x4 Diamaris
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Mud-Terrain T/A KM3 or 4x4 Diamaris?

Which is better in the wet, Mud-Terrain T/A KM3 or 4x4 Diamaris?

BFGoodrich Mud-Terrain T/A KM3, 73 vs 70 on our wet score.

Which grips better on dry roads, Mud-Terrain T/A KM3 or 4x4 Diamaris?

Neither, by our numbers: 68 vs 69 on the dry score, within 3 points.

Which is more comfortable, Mud-Terrain T/A KM3 or 4x4 Diamaris?

Neither, by our numbers: 66 vs 66 on the comfort score, within 3 points.

Which lasts longer, Mud-Terrain T/A KM3 or 4x4 Diamaris?

BFGoodrich Mud-Terrain T/A KM3, 68 vs 60 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