Tests – · none yet Owners 52 · 4 reviews
Yokohama Bluearth E51 vs Michelin Primacy 4+ — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Primacy 4+ is ahead, 77–56
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Tests 83 · 10 tests Owners 72 · 39 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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55
Dry
Primacy 4+ +2378Why this score
Source Bluearth E51 Primacy 4+ Professional tests (TWG score) – 82 Reviews found online 48 72 -
57
Wet
Primacy 4+ +2279Why this score
Source Bluearth E51 Primacy 4+ Professional tests (TWG score) – 82 Reviews found online 53 76 -
54
Comfort
Primacy 4+ +1973Why this score
Source Bluearth E51 Primacy 4+ Professional tests (TWG score) – 73 Reviews found online 38 72 -
–
Noise
No comparison72Why this score
Source Bluearth E51 Primacy 4+ Professional tests (TWG score) – 75 -
64
Treadwear
Primacy 4+ +1882Why this score
Source Bluearth E51 Primacy 4+ Professional tests (TWG score) – 90 Reviews found online 63 70 -
45
Handling
Primacy 4+ +2368Why this score
Source Bluearth E51 Primacy 4+ Reviews found online 45 68
Scores at a glance
| Category | Yokohama Bluearth E51 | Michelin Primacy 4+ |
|---|---|---|
| Relative Score | 56 | 77 |
| Dry | 55 | 78 |
| Wet | 57 | 79 |
| Comfort | 54 | 73 |
| Noise | – | 72 |
| Treadwear | 64 | 82 |
| Handling | 45 | 68 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Neither tire has a score here yet, so this weight changes nothing.
Bluearth E51
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 Bluearth E51
Pros
- Impressive tread longevity and durability
- Stable handling in dry conditions
- Adequate performance for standard commuting
Cons
- Excessive road noise and cabin resonance
- Harsh ride quality due to stiff sidewalls
- Poor wet-weather grip and susceptibility to hydroplaning
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
Specs side by side
| Attribute | A · Yokohama Bluearth E51 | B · Michelin Primacy 4+ |
|---|---|---|
| Category | Summer Premium Touring tires | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 2 | 66 |
| Rim diameters | 17″ – 18″ | 16″ – 21″ |
Which one should you actually buy?
Yokohama Bluearth E51
Michelin Primacy 4+
Winner: Michelin Primacy 4+ — better dry, handling and wet. It leads or ties in every category we score.
Michelin Primacy 4+ scores 78 vs 55 on dry.
Michelin Primacy 4+ scores 68 vs 45 on handling.
Michelin Primacy 4+ scores 79 vs 57 on wet.
Michelin Primacy 4+ scores 73 vs 54 on comfort.
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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.