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Toyo NanoEnergy R38 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Bridgestone Ecopia EP300 vs Toyo NanoEnergy R38 — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 0 road tests and 17 + 8 owner reviews. How we score

Too close to call: Ecopia EP300 69, NanoEnergy R38 70.

Check price on Amazon · Ecopia EP300 Check price on Amazon · NanoEnergy R38
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Toyo NanoEnergy R38
Tire BToyo

NanoEnergy R38

Summer

Provisional

Tests – · none yet Owners 70 · 8 reviews

Category by category

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

  1. 68

    Dry

    NanoEnergy R38 +3
    71
    Why this score
    SourceEcopia EP300NanoEnergy R38
    Professional tests (TWG score)≈ 68 (est.)≈ 70 (est.)
    Reviews found online6972

    Ecopia EP300: 60% × 68 (est.) + 40% × 68.5 = 68

    NanoEnergy R38: 60% × 69.5 (est.) + 40% × 72.2 = 71

    No road tests of dry for Ecopia EP300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

    No road tests of dry for NanoEnergy R38. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 71

    Wet

    NanoEnergy R38 +1
    72
    Why this score
    SourceEcopia EP300NanoEnergy R38
    Professional tests (TWG score)≈ 70 (est.)≈ 72 (est.)
    Reviews found online7173

    Ecopia EP300: 60% × 70.4 (est.) + 40% × 70.9 = 71

    NanoEnergy R38: 60% × 71.7 (est.) + 40% × 73.2 = 72

    No road tests of wet for Ecopia EP300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

    No road tests of wet for NanoEnergy R38. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 69

    Comfort

    Level
    69
    Why this score
    SourceEcopia EP300NanoEnergy R38
    Professional tests (TWG score)≈ 69 (est.)≈ 69 (est.)
    Reviews found online6969

    Ecopia EP300: 60% × 69 (est.) + 40% × 68.5 = 69

    NanoEnergy R38: 60% × 69.1 (est.) + 40% × 69.1 = 69

    No road tests of comfort for Ecopia EP300 or NanoEnergy R38. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  4. 69

    Treadwear

    Ecopia EP300 +4
    65
    Why this score
    SourceEcopia EP300NanoEnergy R38
    Professional tests (TWG score)≈ 67 (est.)≈ 65 (est.)
    Reviews found online7165

    Ecopia EP300: 60% × 67.3 (est.) + 40% × 71.2 = 69

    NanoEnergy R38: 60% × 65.3 (est.) + 40% × 64.6 = 65

    No road tests of treadwear for Ecopia EP300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

    No road tests of treadwear for NanoEnergy R38. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  5. 69

    Handling (owners)

    NanoEnergy R38 +2
    71
    Why this score
    SourceEcopia EP300NanoEnergy R38
    Reviews found online6971
Scores at a glance
CategoryBridgestone Ecopia EP300Toyo NanoEnergy R38
Relative Score 69 70
Dry 68 71
Wet 71 72
Comfort 69 69
Treadwear 69 65
Handling (owners) 69 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
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
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Recomputed
Headline score

Ecopia EP300

NanoEnergy R38

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A Ecopia EP300

Pros

  • Exceptional tread life and durability
  • High levels of ride comfort and low road noise
  • Noticeable improvements in fuel economy

Cons

  • Wet weather grip can diminish significantly as the tire wears
  • Soft sidewalls can result in a 'floaty' or bouncy driving feel
  • Not intended for performance-oriented driving or aggressive cornering
All owner themes in the Ecopia EP300 review

Tire B NanoEnergy R38

Pros

  • Reliable wet and dry grip with predictable handling limits
  • Good value for money compared to premium brand alternatives
  • Solid longevity and mileage, with respectable tread wear reported

Cons

  • Slightly increased road noise reported by some users
  • Limited size or availability challenges noted by consumers wanting replacements
All owner themes in the NanoEnergy R38 review

Specs side by side

Attribute A · Bridgestone Ecopia EP300 B · Toyo NanoEnergy R38
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available29—
Rim diameters15″ – 18″—

Which one should you actually buy?

Bridgestone Ecopia EP300

Toyo NanoEnergy R38

Too close to call: Bridgestone Ecopia EP300 and Toyo NanoEnergy R38 are within 2 points overall. Bridgestone Ecopia EP300 is stronger on treadwear. Toyo NanoEnergy R38 is stronger on dry. Bridgestone Ecopia EP300 rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional. Toyo NanoEnergy R38 rests on little evidence so far (0 tests, 8 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

Bridgestone Ecopia EP300 scores 69 vs 65 on treadwear.

Pick tire B You want the most grip on dry roads

Toyo NanoEnergy R38 scores 71 vs 68 on dry.

Tire A · Bridgestone Ecopia EP300
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Tire B · Toyo NanoEnergy R38
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Ecopia EP300 or NanoEnergy R38?

Which is better in the wet, Ecopia EP300 or NanoEnergy R38?

Neither, by our numbers: 71 vs 72 on the wet score, within 3 points.

Which grips better on dry roads, Ecopia EP300 or NanoEnergy R38?

Toyo NanoEnergy R38, 71 vs 68 on our dry score.

Which is more comfortable, Ecopia EP300 or NanoEnergy R38?

Neither, by our numbers: 69 vs 69 on the comfort score, within 3 points.

Which lasts longer, Ecopia EP300 or NanoEnergy R38?

Bridgestone Ecopia EP300, 69 vs 65 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