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Head-to-head Updated

Michelin Primacy LC vs Kumho Ecsta HS51 — 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 + 6 road tests and 12 + 1,664 owner reviews. How we score

Ecsta HS51 is ahead, 73–67

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Michelin Primacy LC
Tire AMichelin

Primacy LC

Summer

± 8Provisional

Tests – · none yet Owners 66 · 12 reviews

Kumho Ecsta HS51
Tire BKumho

Ecsta HS51

Summer

± 5

Tests 75 · 6 tests Owners 69 · 1,664 reviews

Best test result: #1 of 20 in 2021 Auto Bild 16 Inch Summer Tyre Test (wet handling)

Category by category

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

  1. 66

    Dry

    Ecsta HS51 +8
    74
    Why this score
    SourcePrimacy LCEcsta HS51
    Professional tests (TWG score) · – / 4 tests≈ 67 (est.)77
    Reviews found online6569

    Primacy LC: 60% × 66.9 (est.) + 40% × 65.3 = 66

    Ecsta HS51: 60% × 76.6 + 40% × 68.9 = 74

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

  2. 70

    Wet

    Ecsta HS51 +7
    77
    Why this score
    SourcePrimacy LCEcsta HS51
    Professional tests (TWG score) · – / 4 tests≈ 70 (est.)79
    Reviews found online7072

    Primacy LC: 60% × 70.4 (est.) + 40% × 70.1 = 70

    Ecsta HS51: 60% × 79.4 + 40% × 72.3 = 77

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

  3. 69

    Comfort

    Primacy LC +1
    68
    Why this score
    SourcePrimacy LCEcsta HS51
    Professional tests (TWG score)≈ 69 (est.)≈ 68 (est.)
    Reviews found online7068

    Primacy LC: 40% × 68.8 (est.) + 60% × 69.5 = 69

    Ecsta HS51: 40% × 68.5 (est.) + 60% × 67.7 = 68

    No road tests of comfort for Primacy LC or Ecsta HS51. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  4. –

    Noise

    No comparison
    66
    Why this score
    SourcePrimacy LCEcsta HS51
    Professional tests (TWG score) · – / 2 tests–65
    Reviews found online–≈ 66 (est.)

    Ecsta HS51: 60% × 65.2 + 40% × 66.5 (est.) = 66

    No owner ratings of noise for Ecsta HS51. The owner half is the owners’ average (66): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

  5. 63

    Treadwear

    Ecsta HS51 +7
    70
    Why this score
    SourcePrimacy LCEcsta HS51
    Professional tests (TWG score) · – / 4 tests≈ 65 (est.)73
    Reviews found online6165

    Primacy LC: 60% × 64.7 (est.) + 40% × 61.2 = 63

    Ecsta HS51: 60% × 73.3 + 40% × 64.8 = 70

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

  6. 61

    Handling (owners)

    Ecsta HS51 +7
    68
    Why this score
    SourcePrimacy LCEcsta HS51
    Reviews found online6168
  7. –

    Efficiency

    No comparison
    57
    Why this score
    SourcePrimacy LCEcsta HS51
    Professional tests (TWG score) · – / 2 tests–57
Scores at a glance
CategoryMichelin Primacy LCKumho Ecsta HS51
Relative Score 67 73
Dry 66 74
Wet 70 77
Comfort 69 68
Noise – 66
Treadwear 63 70
Handling (owners) 61 68
Efficiency – 57

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
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
Not 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

Primacy LC

± 5

Ecsta HS51

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 Primacy LC

Pros

  • Exceptional noise suppression and quiet operation
  • High level of ride comfort and cushioning
  • Low rolling resistance contributing to improved fuel economy

Cons

  • Soft sidewalls leading to increased body roll and wobbling
  • Vulnerability to damage from potholes and road hazards
  • High price point relative to some competitors
All owner themes in the Primacy LC review

Tire B Ecsta HS51

Pros

  • Impressive wet and dry weather traction
  • Excellent value for money compared to tier-one premium brands
  • Low road noise and enhanced ride comfort

Cons

  • Soft sidewalls can cause a wobbly or loose feeling during aggressive cornering
  • Some users experienced faster-than-expected tread wear on the front axle
  • Occasional complaints regarding poor steering feedback and high-speed handling at the limit
All owner themes in the Ecsta HS51 review

Specs side by side

Attribute A · Michelin Primacy LC B · Kumho Ecsta HS51
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available—27
Rim diameters—14″ – 18″

Which one should you actually buy?

Michelin Primacy LC

Kumho Ecsta HS51

Winner: Kumho Ecsta HS51 — better dry, wet and treadwear. Where the Michelin Primacy LC is ahead, it is by less than 3 points. Michelin Primacy LC rests on little evidence so far (0 tests, 12 reviews), so read this result as provisional.

Pick tire B You want the most grip on dry roads

Kumho Ecsta HS51 scores 74 vs 66 on dry.

Pick tire B Your priority is wet-weather safety

Kumho Ecsta HS51 scores 77 vs 70 on wet.

Pick tire B You want the longest tread life

Kumho Ecsta HS51 scores 70 vs 63 on treadwear.

Pick tire B You enjoy sharp, responsive handling

Kumho Ecsta HS51 scores 68 vs 61 on handling.

Tire A · Michelin Primacy LC
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Tire B · Kumho Ecsta HS51
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Primacy LC or Ecsta HS51?

Which is better in the wet, Primacy LC or Ecsta HS51?

Kumho Ecsta HS51, 77 vs 70 on our wet score.

Which grips better on dry roads, Primacy LC or Ecsta HS51?

Kumho Ecsta HS51, 74 vs 66 on our dry score.

Which is more comfortable, Primacy LC or Ecsta HS51?

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

Which lasts longer, Primacy LC or Ecsta HS51?

Kumho Ecsta HS51, 70 vs 63 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