Tests – · none yet Owners 77 · 80 reviews
Yokohama Aspec A349 BluEarth 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 SU4 vs Yokohama Aspec A349 BluEarth — 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 80 + 11 owner reviews. How we score
N Fera SU4 is ahead, 75–61
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Tests – · none yet Owners 59 · 11 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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76
Dry
N Fera SU4 +1759Why this score
Source N Fera SU4 Aspec A349 BluEarth Professional tests (TWG score) ≈ 73 (est.) ≈ 62 (est.) Reviews found online 80 55 N Fera SU4: 60% × 72.6 (est.) + 40% × 79.9 = 76
Aspec A349 BluEarth: 60% × 62.4 (est.) + 40% × 54.5 = 59
No road tests of dry for N Fera SU4. 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 Aspec A349 BluEarth. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).
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77
Wet
N Fera SU4 +1859Why this score
Source N Fera SU4 Aspec A349 BluEarth Professional tests (TWG score) ≈ 75 (est.) ≈ 62 (est.) Reviews found online 80 55 N Fera SU4: 60% × 75.5 (est.) + 40% × 79.9 = 77
Aspec A349 BluEarth: 60% × 61.5 (est.) + 40% × 55 = 59
No road tests of wet for N Fera SU4. 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 Aspec A349 BluEarth. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).
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73
Comfort
N Fera SU4 +1162Why this score
Source N Fera SU4 Aspec A349 BluEarth Professional tests (TWG score) ≈ 70 (est.) ≈ 67 (est.) Reviews found online 77 54 N Fera SU4: 60% × 70.5 (est.) + 40% × 76.8 = 73
Aspec A349 BluEarth: 60% × 66.5 (est.) + 40% × 54.1 = 62
No road tests of comfort for N Fera SU4 or Aspec A349 BluEarth. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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68
Treadwear
N Fera SU4 +167Why this score
Source N Fera SU4 Aspec A349 BluEarth Professional tests (TWG score) ≈ 67 (est.) ≈ 67 (est.) Reviews found online 70 69 N Fera SU4: 60% × 66.9 (est.) + 40% × 69.8 = 68
Aspec A349 BluEarth: 60% × 66.5 (est.) + 40% × 68.5 = 67
No road tests of treadwear for N Fera SU4. 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 Aspec A349 BluEarth. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
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76
Handling (owners)
N Fera SU4 +1561Why this score
Source N Fera SU4 Aspec A349 BluEarth Reviews found online 76 61
Scores at a glance
| Category | Nexen N Fera SU4 | Yokohama Aspec A349 BluEarth |
|---|---|---|
| Relative Score | 75 | 61 |
| Dry | 76 | 59 |
| Wet | 77 | 59 |
| Comfort | 73 | 62 |
| Treadwear | 68 | 67 |
| Handling (owners) | 76 | 61 |
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
75
/ 100
N Fera SU4
61
/ 100
Aspec A349 BluEarth
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A N Fera SU4
Pros
- Outstanding value for money compared to major premium brands
- High level of ride comfort and low road noise
- Reliable and predictable grip in both dry and wet conditions
Cons
- Softer sidewalls can lead to less precise steering feedback and body roll during aggressive cornering
- Average or faster-than-expected treadwear for some driving styles
- Can become harder and noisier as the tire ages or wears down
Tire B Aspec A349 BluEarth
Pros
- Impressive tread life and durability for an OEM tire
- Quiet and comfortable ride quality
- Reliable handling and lateral grip in dry conditions
Cons
- Poor traction and tendency to spin on wet surfaces
- High price point compared to aftermarket competitors
- Mediocre cornering ability and grip during aggressive maneuvers
Specs side by side
| Attribute | A · Nexen N Fera SU4 | B · Yokohama Aspec A349 BluEarth |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
Which one should you actually buy?
75
/ 100
Nexen N Fera SU4
61
/ 100
Yokohama Aspec A349 BluEarth
Winner: Nexen N Fera SU4 — better wet, dry and handling. It leads or ties in every category we score. Yokohama Aspec A349 BluEarth rests on little evidence so far (0 tests, 11 reviews), so read this result as provisional.
Pick tire A
Your priority is wet-weather safety
Nexen N Fera SU4 scores 77 vs 59 on wet.
Pick tire A
You want the most grip on dry roads
Nexen N Fera SU4 scores 76 vs 59 on dry.
Pick tire A
You enjoy sharp, responsive handling
Nexen N Fera SU4 scores 76 vs 61 on handling.
Pick tire A
You want the most comfortable ride
Nexen N Fera SU4 scores 73 vs 62 on comfort.
Tire A · Nexen N Fera SU4
Tire B · Yokohama Aspec A349 BluEarth
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N Fera SU4 or Aspec A349 BluEarth?
Which is better in the wet, N Fera SU4 or Aspec A349 BluEarth?
Nexen N Fera SU4, 77 vs 59 on our wet score.
Which grips better on dry roads, N Fera SU4 or Aspec A349 BluEarth?
Nexen N Fera SU4, 76 vs 59 on our dry score.
Which is more comfortable, N Fera SU4 or Aspec A349 BluEarth?
Nexen N Fera SU4, 73 vs 62 on our comfort score.
Which lasts longer, N Fera SU4 or Aspec A349 BluEarth?
Neither, by our numbers: 68 vs 67 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