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Head-to-head Updated

Michelin Primacy 4+ vs Toyo Proxes ST — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 10 + 0 road tests and 39 + 14 owner reviews. How we score

Primacy 4+ is ahead, 78–72

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Michelin Primacy 4+
Tire AMichelin

Primacy 4+

Summer

Tests 83 · 10 tests Owners 72 · 39 reviews

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

Toyo Proxes ST
Tire BToyo

Proxes ST

All Season

Provisional

Tests – · none yet Owners 73 · 14 reviews

Category by category

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

  1. 78

    Dry

    Primacy 4+ +6
    72
    Why this score
    SourcePrimacy 4+Proxes ST
    Professional tests (TWG score) · 9 / – tests82≈ 71 (est.)
    Reviews found online7275

    Primacy 4+: 60% × 81.9 + 40% × 71.8 = 78

    Proxes ST: 60% × 70.5 (est.) + 40% × 74.7 = 72

    No road tests of dry for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 79

    Wet

    Primacy 4+ +4
    75
    Why this score
    SourcePrimacy 4+Proxes ST
    Professional tests (TWG score) · 9 / – tests82≈ 74 (est.)
    Reviews found online7577

    Primacy 4+: 60% × 81.7 + 40% × 75.4 = 79

    Proxes ST: 60% × 73.6 (est.) + 40% × 76.6 = 75

    No road tests of wet for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. –

    Snow

    No comparison
    66
    Why this score
    SourcePrimacy 4+Proxes ST
    Professional tests (TWG score)–≈ 68 (est.)
    Reviews found online–64

    Proxes ST: 60% × 67.8 (est.) + 40% × 63.6 = 66

    No road tests of snow for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 73

    Comfort

    Primacy 4+ +1
    72
    Why this score
    SourcePrimacy 4+Proxes ST
    Professional tests (TWG score) · 1 / – tests73≈ 70 (est.)
    Reviews found online7274

    Primacy 4+: 60% × 73.2 + 40% × 71.7 = 73

    Proxes ST: 60% × 70 (est.) + 40% × 74.1 = 72

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

  5. 73

    Noise

    No comparison
    –
    Why this score
    SourcePrimacy 4+Proxes ST
    Professional tests (TWG score) · 7 / – tests77–
    Reviews found online≈ 67 (est.)–

    Primacy 4+: 60% × 76.5 + 40% × 67.3 (est.) = 73

    No owner ratings of noise for Primacy 4+. The owner half is the owners’ average (67): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

  6. 82

    Treadwear

    Primacy 4+ +13
    69
    Why this score
    SourcePrimacy 4+Proxes ST
    Professional tests (TWG score) · 4 / – tests90≈ 67 (est.)
    Reviews found online7072

    Primacy 4+: 60% × 89.8 + 40% × 70.3 = 82

    Proxes ST: 60% × 67.5 (est.) + 40% × 71.7 = 69

    No road tests of treadwear for Proxes ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 68

    Handling (owners)

    Proxes ST +3
    71
    Why this score
    SourcePrimacy 4+Proxes ST
    Reviews found online6871
Scores at a glance
CategoryMichelin Primacy 4+Toyo Proxes ST
Relative Score 78 72
Dry 78 72
Wet 79 75
Snow – 66
Comfort 73 72
Noise 73 –
Treadwear 82 69
Handling (owners) 68 71

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
Recomputed
Headline score

Primacy 4+

Proxes ST

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 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

Tire B Proxes ST

Pros

  • Exceptional tread life and long-term durability
  • Quiet and comfortable ride quality compared to other brands and run-flats
  • Strong dry and wet grip with good resistance to aquaplaning

Cons

  • Poor performance and limited traction in snow and ice
  • A small number of users experienced disappointing treadwear and longevity
  • Conflicting feedback regarding wet grip, with isolated reports of poor performance
All owner themes in the Proxes ST review

Specs side by side

Attribute A · Michelin Primacy 4+ B · Toyo Proxes ST
CategorySummerAll Season
Vehicle typePassenger Car / CrossoverSUV and 4x4
Sizes available661
Rim diameters16″ – 21″19″

Which one should you actually buy?

Michelin Primacy 4+

Toyo Proxes ST

Winner: Michelin Primacy 4+ — better treadwear, dry and wet. Where the Toyo Proxes ST is ahead, it is by less than 3 points. Toyo Proxes ST rests on little evidence so far (0 tests, 14 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

Michelin Primacy 4+ scores 82 vs 69 on treadwear.

Pick tire A You want the most grip on dry roads

Michelin Primacy 4+ scores 78 vs 72 on dry.

Pick tire A Your priority is wet-weather safety

Michelin Primacy 4+ scores 79 vs 75 on wet.

Tire A · Michelin Primacy 4+
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Tire B · Toyo Proxes ST
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Primacy 4+ or Proxes ST?

Which is better in the wet, Primacy 4+ or Proxes ST?

Michelin Primacy 4+, 79 vs 75 on our wet score.

Which grips better on dry roads, Primacy 4+ or Proxes ST?

Michelin Primacy 4+, 78 vs 72 on our dry score.

Which is more comfortable, Primacy 4+ or Proxes ST?

Neither, by our numbers: 73 vs 72 on the comfort score, within 3 points.

Which lasts longer, Primacy 4+ or Proxes ST?

Michelin Primacy 4+, 82 vs 69 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