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Head-to-head Updated

Michelin Primacy 4+ vs Riken All Star 2 — Compared

Relative Score (0–100): 60% professional tests, 40% owner reviews.

Primacy 4+ is ahead, 77–52

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Tire BRiken

All Star 2

Summer Touring tires

Tests – · none yet Owners 44 · 3 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+ +23
    55
    Why this score
    SourcePrimacy 4+All Star 2
    Professional tests (TWG score)82–
    Reviews found online7248
  2. 79

    Wet

    Primacy 4+ +24
    55
    Why this score
    SourcePrimacy 4+All Star 2
    Professional tests (TWG score)82–
    Reviews found online7649
  3. 73

    Comfort

    Primacy 4+ +14
    59
    Why this score
    SourcePrimacy 4+All Star 2
    Professional tests (TWG score)73–
    Reviews found online7249
  4. 72

    Noise

    No comparison
    –
    Why this score
    SourcePrimacy 4+All Star 2
    Professional tests (TWG score)75–
  5. 82

    Treadwear

    Primacy 4+ +36
    46
    Why this score
    SourcePrimacy 4+All Star 2
    Professional tests (TWG score)90–
    Reviews found online7033
  6. 68

    Handling

    Primacy 4+ +21
    47
    Why this score
    SourcePrimacy 4+All Star 2
    Reviews found online6847
Scores at a glance
CategoryMichelin Primacy 4+Riken All Star 2
Relative Score 77 52
Dry 78 55
Wet 79 55
Comfort 73 59
Noise 72 –
Treadwear 82 46
Handling 68 47

Higher is better. The Relative Score follows your weights below; category scores do not change.

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Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.

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Recomputed
Headline score

Primacy 4+

All Star 2

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 All Star 2

Pros

  • Attractive low price point
  • Acceptable noise levels for budget-conscious drivers
  • Adequate stopping performance in light city conditions

Cons

  • Poor tread longevity and durability
  • Failure to meet safety inspection standards within a year
  • Inconsistent quality compared to premium tire brands
All owner themes in the All Star 2 review

Specs side by side

Attribute A · Michelin Primacy 4+ B · Riken All Star 2
CategorySummerSummer Touring tires
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available66—
Rim diameters16″ – 21″—

Which one should you actually buy?

Michelin Primacy 4+

Riken All Star 2

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

Pick tire A You want the longest tread life

Michelin Primacy 4+ scores 82 vs 46 on treadwear.

Pick tire A Your priority is wet-weather safety

Michelin Primacy 4+ scores 79 vs 55 on wet.

Pick tire A You want the most grip on dry roads

Michelin Primacy 4+ scores 78 vs 55 on dry.

Pick tire A You enjoy sharp, responsive handling

Michelin Primacy 4+ scores 68 vs 47 on handling.

Tire A · Michelin Primacy 4+
Check price on Amazon
Tire B · Riken All Star 2
Check price on Amazon

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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.

Community buzz from Reddit and forums is shown for context only — it never changes the score.

77

Leads

Primacy 4+

Amazon