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Head-to-head Updated

Dunlop SP Sport LM705 vs Michelin Primacy 4+ — 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 + 10 road tests and 39 + 40 owner reviews. How we score

Primacy 4+ is ahead, 77–65

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Michelin Primacy 4+
Tire BMichelin

Primacy 4+

Summer

± 4

Tests 85 · 10 tests Owners 71 · 40 reviews

Best test result: #1 of 16 in 2024 ADAC Summer Tyre Test (abrasion)

Category by category

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

  1. 66

    Dry

    Primacy 4+ +12
    78
    Why this score
    SourceSP Sport LM705Primacy 4+
    Professional tests (TWG score) · – / 9 tests≈ 67 (est.)82
    Reviews found online6571

    SP Sport LM705: 60% × 66.9 (est.) + 40% × 65.4 = 66

    Primacy 4+: 60% × 82.4 + 40% × 71 = 78

    No road tests of dry for SP Sport LM705. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 62

    Wet

    Primacy 4+ +17
    79
    Why this score
    SourceSP Sport LM705Primacy 4+
    Professional tests (TWG score) · – / 9 tests≈ 65 (est.)82
    Reviews found online5975

    SP Sport LM705: 60% × 64.5 (est.) + 40% × 59.3 = 62

    Primacy 4+: 60% × 82.2 + 40% × 74.6 = 79

    No road tests of wet for SP Sport LM705. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.54).

  3. 62

    Snow

    No comparison
    –
    Why this score
    SourceSP Sport LM705Primacy 4+
    Professional tests (TWG score)≈ 66 (est.)–
    Reviews found online56–

    SP Sport LM705: 60% × 65.9 (est.) + 40% × 56.1 = 62

    No road tests of snow for SP Sport LM705. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 70

    Comfort

    Primacy 4+ +1
    71
    Why this score
    SourceSP Sport LM705Primacy 4+
    Professional tests (TWG score) · – / 1 tests≈ 69 (est.)73
    Reviews found online7170

    SP Sport LM705: 40% × 69.3 (est.) + 60% × 70.9 = 70

    Primacy 4+: 40% × 73.1 + 60% × 69.6 = 71

    No road tests of comfort for SP Sport LM705. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 62

    Noise

    Primacy 4+ +10
    72
    Why this score
    SourceSP Sport LM705Primacy 4+
    Professional tests (TWG score) · – / 7 tests≈ 66 (est.)76
    Reviews found online56≈ 66 (est.)

    SP Sport LM705: 60% × 66.5 (est.) + 40% × 55.8 = 62

    Primacy 4+: 60% × 76.3 + 40% × 66.5 (est.) = 72

    No road tests of noise for SP Sport LM705. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

    No owner ratings of noise for Primacy 4+. 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.

  6. 68

    Treadwear

    Primacy 4+ +17
    85
    Why this score
    SourceSP Sport LM705Primacy 4+
    Professional tests (TWG score) · – / 4 tests≈ 67 (est.)95
    Reviews found online6870

    SP Sport LM705: 60% × 67.2 (est.) + 40% × 68.4 = 68

    Primacy 4+: 60% × 95.3 + 40% × 69.7 = 85

    No road tests of treadwear for SP Sport LM705. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).

  7. 66

    Handling (owners)

    Level
    66
    Why this score
    SourceSP Sport LM705Primacy 4+
    Reviews found online6666
  8. –

    Efficiency

    No comparison
    78
    Why this score
    SourceSP Sport LM705Primacy 4+
    Professional tests (TWG score) · – / 8 tests–78
Scores at a glance
CategoryDunlop SP Sport LM705Michelin Primacy 4+
Relative Score 65 77
Dry 66 78
Wet 62 79
Snow 62 –
Comfort 70 71
Noise 62 72
Treadwear 68 85
Handling (owners) 66 66
Efficiency – 78

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
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

SP Sport LM705

± 4

Primacy 4+

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 SP Sport LM705

Pros

  • Exceptional ride comfort and smooth bump/pothole absorption
  • Very low road noise and quiet highway operation
  • High value for money compared to premium competitors

Cons

  • Significantly compromised wet grip and poor performance in heavy rain
  • Soft sidewalls lead to mushy steering response and lack of high-speed handling feedback
  • Faster-than-expected wear reported by some users
All owner themes in the SP Sport LM705 review

Tire B Primacy 4+

Pros

  • Excellent ride comfort and a smooth, compliant 'limousine-like' feel over bumps
  • Strong and reliable grip in both wet and dry conditions, inspiring confidence
  • Noticeable improvement in quietness and traction compared to predecessor tires or factory options

Cons

  • Loud road noise and a harsh drone on rough or coarse asphalt surfaces
  • Soft sidewalls can reduce steering agility and initial responsiveness compared to dedicated sport tires
  • High premium price point relative to competitors
All owner themes in the Primacy 4+ review

Specs side by side

Attribute A · Dunlop SP Sport LM705 B · Michelin Primacy 4+
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available666
Rim diameters16″ – 19″16″ – 21″
SidewallBlackwall—
Sizes in common22

Which one should you actually buy?

Dunlop SP Sport LM705

Michelin Primacy 4+

Winner: Michelin Primacy 4+ — better wet, treadwear and dry. It leads or ties in every category we score.

Pick tire B Your priority is wet-weather safety

Michelin Primacy 4+ scores 79 vs 62 on wet.

Pick tire B You want the longest tread life

Michelin Primacy 4+ scores 85 vs 68 on treadwear.

Pick tire B You want the most grip on dry roads

Michelin Primacy 4+ scores 78 vs 66 on dry.

Pick tire B You want a quieter cabin

Michelin Primacy 4+ scores 72 vs 62 on noise.

Tire A · Dunlop SP Sport LM705
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Tire B · Michelin Primacy 4+
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SP Sport LM705 or Primacy 4+?

Which is better in the wet, SP Sport LM705 or Primacy 4+?

Michelin Primacy 4+, 79 vs 62 on our wet score.

Which grips better on dry roads, SP Sport LM705 or Primacy 4+?

Michelin Primacy 4+, 78 vs 66 on our dry score.

Which is quieter, SP Sport LM705 or Primacy 4+?

Michelin Primacy 4+, 72 vs 62 on our noise score.

Which is more comfortable, SP Sport LM705 or Primacy 4+?

Neither, by our numbers: 70 vs 71 on the comfort score, within 3 points.

Which lasts longer, SP Sport LM705 or Primacy 4+?

Michelin Primacy 4+, 85 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