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Nexen N FERA SUR4 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Nexen N FERA SUR4 vs Yokohama BluEarth AE50 — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 2 road tests and 6 + 36 owner reviews. How we score

Too close to call: N FERA SUR4 62, BluEarth AE50 63.

Check price on Amazon · N FERA SUR4 Check price on Amazon · BluEarth AE50
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Nexen N FERA SUR4
Tire ANexen

N FERA SUR4

Summer

Provisional

Tests – · none yet Owners 57 · 6 reviews

Yokohama BluEarth AE50
Tire BYokohama

BluEarth AE50

Summer

Tests 72 · 2 tests Owners 54 · 36 reviews

Best test result: #6 of 20 in 2020 Auto Zeitung Summer Tyre Test (dry handling)

Category by category

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

  1. 71

    Dry

    N FERA SUR4 +7
    64
    Why this score
    SourceN FERA SUR4BluEarth AE50
    Professional tests (TWG score) · – / 2 tests≈ 70 (est.)72
    Reviews found online7353

    N FERA SUR4: 60% × 69.9 (est.) + 40% × 73.2 = 71

    BluEarth AE50: 60% × 71.6 + 40% × 52.9 = 64

    No road tests of dry for N FERA SUR4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 55

    Wet

    BluEarth AE50 +12
    67
    Why this score
    SourceN FERA SUR4BluEarth AE50
    Professional tests (TWG score) · – / 2 tests≈ 59 (est.)72
    Reviews found online5060

    N FERA SUR4: 60% × 58.8 (est.) + 40% × 50.1 = 55

    BluEarth AE50: 60% × 71.7 + 40% × 59.7 = 67

    No road tests of wet for N FERA SUR4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 60

    Comfort

    BluEarth AE50 +6
    66
    Why this score
    SourceN FERA SUR4BluEarth AE50
    Professional tests (TWG score) · – / 1 tests≈ 66 (est.)73
    Reviews found online5156

    N FERA SUR4: 60% × 65.9 (est.) + 40% × 50.6 = 60

    BluEarth AE50: 60% × 72.5 + 40% × 55.8 = 66

    No road tests of comfort for N FERA SUR4. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  4. –

    Noise

    No comparison
    70
    Why this score
    SourceN FERA SUR4BluEarth AE50
    Professional tests (TWG score) · – / 2 tests–71
    Reviews found online–≈ 67 (est.)

    BluEarth AE50: 60% × 71.1 + 40% × 67.3 (est.) = 70

    No owner ratings of noise for BluEarth AE50. The owner half is the owners’ average (67): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

  5. 55

    Treadwear

    Level
    55
    Why this score
    SourceN FERA SUR4BluEarth AE50
    Professional tests (TWG score)≈ 60 (est.)≈ 60 (est.)
    Reviews found online4748

    N FERA SUR4: 60% × 59.8 (est.) + 40% × 46.7 = 55

    BluEarth AE50: 60% × 60.3 (est.) + 40% × 48.2 = 55

    No road tests of treadwear for N FERA SUR4. 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 BluEarth AE50. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  6. 71

    Handling (owners)

    N FERA SUR4 +14
    57
    Why this score
    SourceN FERA SUR4BluEarth AE50
    Reviews found online7157
Scores at a glance
CategoryNexen N FERA SUR4Yokohama BluEarth AE50
Relative Score 62 63
Dry 71 64
Wet 55 67
Comfort 60 66
Noise – 70
Treadwear 55 55
Handling (owners) 71 57

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
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

N FERA SUR4

BluEarth AE50

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 N FERA SUR4

Pros

  • Exceptional dry grip and track-day performance
  • Precise steering feedback and predictable handling
  • Cost-effective alternative to more expensive track tires

Cons

  • High level of road noise
  • Poor wet-weather performance and dangerous hydroplaning tendencies in heavy rain
  • Fast tread wear
All owner themes in the N FERA SUR4 review

Tire B BluEarth AE50

Pros

  • Strong wet and dry road grip for daily commuting
  • High levels of ride comfort and smoothness
  • Good value for money compared to premium competitors

Cons

  • Rapid and premature tread wear reported by many users
  • Significant increase in road noise as the tire ages
  • Soft sidewalls leading to vague steering feedback and poor cornering stability
All owner themes in the BluEarth AE50 review

Specs side by side

Attribute A · Nexen N FERA SUR4 B · Yokohama BluEarth AE50
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available—28
Rim diameters—14″ – 18″

Which one should you actually buy?

Nexen N FERA SUR4

Yokohama BluEarth AE50

Too close to call: Nexen N FERA SUR4 and Yokohama BluEarth AE50 are within 2 points overall. Nexen N FERA SUR4 is stronger on handling and dry. Yokohama BluEarth AE50 is stronger on wet and comfort. Nexen N FERA SUR4 rests on little evidence so far (0 tests, 6 reviews), so read this result as provisional.

Pick tire A You enjoy sharp, responsive handling

Nexen N FERA SUR4 scores 71 vs 57 on handling.

Pick tire B Your priority is wet-weather safety

Yokohama BluEarth AE50 scores 67 vs 55 on wet.

Pick tire A You want the most grip on dry roads

Nexen N FERA SUR4 scores 71 vs 64 on dry.

Pick tire B You want the most comfortable ride

Yokohama BluEarth AE50 scores 66 vs 60 on comfort.

Tire A · Nexen N FERA SUR4
Check price on Amazon
Tire B · Yokohama BluEarth AE50
Check price on Amazon

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N FERA SUR4 or BluEarth AE50?

Which is better in the wet, N FERA SUR4 or BluEarth AE50?

Yokohama BluEarth AE50, 67 vs 55 on our wet score.

Which grips better on dry roads, N FERA SUR4 or BluEarth AE50?

Nexen N FERA SUR4, 71 vs 64 on our dry score.

Which is more comfortable, N FERA SUR4 or BluEarth AE50?

Yokohama BluEarth AE50, 66 vs 60 on our comfort score.

Which lasts longer, N FERA SUR4 or BluEarth AE50?

Neither, by our numbers: 55 vs 55 on the treadwear score, within 3 points.

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