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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

Toyo NanoEnergy R38 vs Toyo Proxes CF2 — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 1 road tests and 8 + 110 owner reviews. How we score

Proxes CF2 leads, 72–70 Narrow edge

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Toyo NanoEnergy R38
Tire AToyo

NanoEnergy R38

Summer

Provisional

Tests – · none yet Owners 70 · 8 reviews

Toyo Proxes CF2
Tire BToyo

Proxes CF2

Summer

Tests 69 · 1 test Owners 76 · 110 reviews

Category by category

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

  1. 71

    Dry

    Level
    71
    Why this score
    SourceNanoEnergy R38Proxes CF2
    Professional tests (TWG score) · – / 1 tests≈ 70 (est.)67
    Reviews found online7277

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

    Proxes CF2: 60% × 67 + 40% × 77.2 = 71

    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. 72

    Wet

    Proxes CF2 +1
    73
    Why this score
    SourceNanoEnergy R38Proxes CF2
    Professional tests (TWG score) · – / 1 tests≈ 72 (est.)70
    Reviews found online7377

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

    Proxes CF2: 60% × 70.2 + 40% × 77.2 = 73

    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

    Proxes CF2 +3
    72
    Why this score
    SourceNanoEnergy R38Proxes CF2
    Professional tests (TWG score)≈ 69 (est.)≈ 70 (est.)
    Reviews found online6976

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

    Proxes CF2: 60% × 70.3 (est.) + 40% × 75.8 = 72

    No road tests of comfort for NanoEnergy R38 or Proxes CF2. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  4. 65

    Treadwear

    Proxes CF2 +5
    70
    Why this score
    SourceNanoEnergy R38Proxes CF2
    Professional tests (TWG score)≈ 65 (est.)≈ 68 (est.)
    Reviews found online6572

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

    Proxes CF2: 60% × 67.7 (est.) + 40% × 72.4 = 70

    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).

    No road tests of treadwear for Proxes CF2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  5. 71

    Handling (owners)

    Proxes CF2 +6
    77
    Why this score
    SourceNanoEnergy R38Proxes CF2
    Reviews found online7177
Scores at a glance
CategoryToyo NanoEnergy R38Toyo Proxes CF2
Relative Score 70 72
Dry 71 71
Wet 72 73
Comfort 69 72
Treadwear 65 70
Handling (owners) 71 77

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
NotLessNeutralImportantMost
Recomputed
Headline score

NanoEnergy R38

Proxes CF2

Pros, cons & observations

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

Tire A 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

Tire B Proxes CF2

Pros

  • Excellent value for money compared to premium competitors
  • High levels of ride comfort and low road noise
  • Strong wet and dry grip with predictable handling

Cons

  • Reports of rubber hardening or cracking after 2-3 years in hot climates
  • Soft sidewalls can feel less precise during aggressive cornering
  • Requires a significant 'scrub-in' period to reach peak grip levels
All owner themes in the Proxes CF2 review

Specs side by side

Attribute A · Toyo NanoEnergy R38 B · Toyo Proxes CF2
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available—55
Rim diameters—13″ – 18″

Which one should you actually buy?

Toyo NanoEnergy R38

Toyo Proxes CF2

Narrow edge: Toyo Proxes CF2 — better handling, treadwear and comfort. It leads or ties in every category we score. Toyo NanoEnergy R38 rests on little evidence so far (0 tests, 8 reviews), so read this result as provisional.

Pick tire B You enjoy sharp, responsive handling

Toyo Proxes CF2 scores 77 vs 71 on handling.

Pick tire B You want the longest tread life

Toyo Proxes CF2 scores 70 vs 65 on treadwear.

Pick tire B You want the most comfortable ride

Toyo Proxes CF2 scores 72 vs 69 on comfort.

Tire A · Toyo NanoEnergy R38
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Tire B · Toyo Proxes CF2
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NanoEnergy R38 or Proxes CF2?

Which is better in the wet, NanoEnergy R38 or Proxes CF2?

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

Which grips better on dry roads, NanoEnergy R38 or Proxes CF2?

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

Which is more comfortable, NanoEnergy R38 or Proxes CF2?

Toyo Proxes CF2, 72 vs 69 on our comfort score.

Which lasts longer, NanoEnergy R38 or Proxes CF2?

Toyo Proxes CF2, 70 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