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Head-to-head Updated

Bridgestone Ecopia EP422 Plus vs Yokohama BluEarth S34 — 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 + 0 road tests and 24 + 5 owner reviews. How we score

Ecopia EP422 Plus is ahead, 47–41

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Yokohama BluEarth S34
Tire BYokohama

BluEarth S34

All Season

± 8Provisional

Tests – · none yet Owners 29 · 5 reviews

Category by category

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

  1. 43

    Dry

    Ecopia EP422 Plus +1
    42
    Why this score
    SourceEcopia EP422 PlusBluEarth S34
    Professional tests (TWG score)≈ 52 (est.)≈ 52 (est.)
    Reviews found online3029

    Ecopia EP422 Plus: 60% × 52.2 (est.) + 40% × 30.1 = 43

    BluEarth S34: 60% × 51.6 (est.) + 40% × 28.6 = 42

    No road tests of dry for Ecopia EP422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

    No road tests of dry for BluEarth S34. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 51

    Wet

    Ecopia EP422 Plus +11
    40
    Why this score
    SourceEcopia EP422 PlusBluEarth S34
    Professional tests (TWG score)≈ 56 (est.)≈ 47 (est.)
    Reviews found online4428

    Ecopia EP422 Plus: 60% × 55.8 (est.) + 40% × 43.5 = 51

    BluEarth S34: 60% × 47.2 (est.) + 40% × 27.9 = 40

    No road tests of wet for Ecopia EP422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

    No road tests of wet for BluEarth S34. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 53

    Snow

    Ecopia EP422 Plus +6
    47
    Why this score
    SourceEcopia EP422 PlusBluEarth S34
    Professional tests (TWG score)≈ 61 (est.)≈ 58 (est.)
    Reviews found online4131

    Ecopia EP422 Plus: 60% × 61.2 (est.) + 40% × 41 = 53

    BluEarth S34: 60% × 58 (est.) + 40% × 30.6 = 47

    No road tests of snow for Ecopia EP422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

    No road tests of snow for BluEarth S34. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 45

    Comfort

    Ecopia EP422 Plus +9
    36
    Why this score
    SourceEcopia EP422 PlusBluEarth S34
    Professional tests (TWG score)≈ 62 (est.)≈ 59 (est.)
    Reviews found online3421

    Ecopia EP422 Plus: 40% × 61.7 (est.) + 60% × 34.3 = 45

    BluEarth S34: 40% × 58.9 (est.) + 60% × 20.5 = 36

    No road tests of comfort for Ecopia EP422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

    No road tests of comfort for BluEarth S34. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 56

    Noise

    No comparison
    –
    Why this score
    SourceEcopia EP422 PlusBluEarth S34
    Professional tests (TWG score)≈ 66 (est.)–
    Reviews found online40–

    Ecopia EP422 Plus: 60% × 66.3 (est.) + 40% × 40.3 = 56

    No road tests of noise for Ecopia EP422 Plus. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 50

    Treadwear

    Ecopia EP422 Plus +4
    46
    Why this score
    SourceEcopia EP422 PlusBluEarth S34
    Professional tests (TWG score)≈ 57 (est.)≈ 55 (est.)
    Reviews found online4033

    Ecopia EP422 Plus: 60% × 56.9 (est.) + 40% × 39.6 = 50

    BluEarth S34: 60% × 54.6 (est.) + 40% × 33.3 = 46

    No road tests of treadwear for Ecopia EP422 Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

    No road tests of treadwear for BluEarth S34. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 34

    Handling (owners)

    Ecopia EP422 Plus +10
    24
    Why this score
    SourceEcopia EP422 PlusBluEarth S34
    Reviews found online3424
Scores at a glance
CategoryBridgestone Ecopia EP422 PlusYokohama BluEarth S34
Relative Score 47 41
Dry 43 42
Wet 51 40
Snow 53 47
Comfort 45 36
Noise 56 –
Treadwear 50 46
Handling (owners) 34 24

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
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
± 8

Ecopia EP422 Plus

± 8

BluEarth S34

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 Ecopia EP422 Plus

Pros

  • Excellent fuel economy and low rolling resistance
  • Quiet and comfortable ride quality when new
  • Predictable dry and wet traction for conservative daily commuting

Cons

  • Significantly shorter tread life than advertised or expected
  • Develops loud whining, buzzing, and increased noise as the tread wears down
  • Stiff ride quality or harshness over rough pavement and cracks
All owner themes in the Ecopia EP422 Plus review

Tire B BluEarth S34

Pros

  • Dry grip is described as adequate by most reviewers and as 'phenomenal' by one.
  • Low rolling resistance contributes to fuel savings on hybrids.
  • One reviewer found handling great and the tire very good value for the price.

Cons

  • Wet traction is the most frequent complaint: reports of slipping in the rain, sliding when turning in wet conditions despite traction and stability control, and initial slipperiness on new tires.
  • Handling is described as poor or only 'so-so' by several reviewers.
  • Noise is prominent, including wind and road noise at speed (one reviewer measured roughly 85 dB at 70 mph).
All owner themes in the BluEarth S34 review

Specs side by side

Attribute A · Bridgestone Ecopia EP422 Plus B · Yokohama BluEarth S34
CategoryAll-SeasonAll Season
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available15—
Rim diameters15″ – 17″—
Tread depth11/32″—
UTQG640 A A—
Treadwear warranty70,000 mi—
SidewallBlackwall—
Max pressure44 psi—

Which one should you actually buy?

Bridgestone Ecopia EP422 Plus

Yokohama BluEarth S34

Winner: Bridgestone Ecopia EP422 Plus — better wet, handling and comfort. It leads or ties in every category we score. Yokohama BluEarth S34 rests on little evidence so far (0 tests, 5 reviews), so read this result as provisional.

Pick tire A Your priority is wet-weather safety

Bridgestone Ecopia EP422 Plus scores 51 vs 40 on wet.

Pick tire A You enjoy sharp, responsive handling

Bridgestone Ecopia EP422 Plus scores 34 vs 24 on handling.

Pick tire A You want the most comfortable ride

Bridgestone Ecopia EP422 Plus scores 45 vs 36 on comfort.

Pick tire A You drive through snowy winters

Bridgestone Ecopia EP422 Plus scores 53 vs 47 on snow.

Tire A · Bridgestone Ecopia EP422 Plus
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Tire B · Yokohama BluEarth S34
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Ecopia EP422 Plus or BluEarth S34?

Which is better in the wet, Ecopia EP422 Plus or BluEarth S34?

Bridgestone Ecopia EP422 Plus, 51 vs 40 on our wet score.

Which grips better on dry roads, Ecopia EP422 Plus or BluEarth S34?

Neither, by our numbers: 43 vs 42 on the dry score, within 3 points.

Which is better in snow, Ecopia EP422 Plus or BluEarth S34?

Bridgestone Ecopia EP422 Plus, 53 vs 47 on our snow score.

Which is more comfortable, Ecopia EP422 Plus or BluEarth S34?

Bridgestone Ecopia EP422 Plus, 45 vs 36 on our comfort score.

Which lasts longer, Ecopia EP422 Plus or BluEarth S34?

Bridgestone Ecopia EP422 Plus, 50 vs 46 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