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Kumho Solus HS51 Harmony Sports looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Kumho Solus HS51 Harmony Sports 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 1 + 2 road tests and 5 + 36 owner reviews. How we score

Solus HS51 Harmony Sports leads, 67–63 Narrow edge

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Kumho Solus HS51 Harmony Sports
Tire AKumho

Solus HS51 Harmony Sports

Summer

Provisional

Tests 68 · 1 test Owners 67 · 5 reviews

Best test result: #1 of 10 in 2020 Teknikens 17 Inch Summer Tyre Test (straight aquaplaning)

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. 66

    Dry

    Solus HS51 Harmony Sports +2
    64
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth AE50
    Professional tests (TWG score) · 1 / 2 tests6572
    Reviews found online6653

    Solus HS51 Harmony Sports: 60% × 65.4 + 40% × 65.8 = 66

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

  2. 73

    Wet

    Solus HS51 Harmony Sports +6
    67
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth AE50
    Professional tests (TWG score) · 1 / 2 tests7572
    Reviews found online7060

    Solus HS51 Harmony Sports: 60% × 75.3 + 40% × 70.4 = 73

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

  3. 59

    Comfort

    BluEarth AE50 +7
    66
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth AE50
    Professional tests (TWG score) · 1 / 1 tests5173
    Reviews found online7156

    Solus HS51 Harmony Sports: 60% × 51 + 40% × 70.7 = 59

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

  4. –

    Noise

    No comparison
    70
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth 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. 66

    Treadwear

    Solus HS51 Harmony Sports +11
    55
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth AE50
    Professional tests (TWG score)≈ 66 (est.)≈ 60 (est.)
    Reviews found online6648

    Solus HS51 Harmony Sports: 60% × 65.7 (est.) + 40% × 65.9 = 66

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

    No road tests of treadwear for Solus HS51 Harmony Sports. 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. 61

    Handling (owners)

    Solus HS51 Harmony Sports +4
    57
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth AE50
    Reviews found online6157
Scores at a glance
CategoryKumho Solus HS51 Harmony SportsYokohama BluEarth AE50
Relative Score 67 63
Dry 66 64
Wet 73 67
Comfort 59 66
Noise – 70
Treadwear 66 55
Handling (owners) 61 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

Solus HS51 Harmony Sports

BluEarth AE50

Only categories both tires have data for count toward the headline score.

The professional test results behind the scores

Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.

In the overall rankings of 1 tests that ran both, Kumho Solus HS51 Harmony Sports finished ahead 1 times and Yokohama BluEarth AE50 0 times.

DisciplineCategorySolus HS51 Harmony SportsBluEarth AE50ΔHead-to-head
Also published by the testers (not in the score)
Overall Ranking Overall #5/12 #12/12 – 1–0 in 1 shared test Newest: 2015 ACE Summer Touring Tyre Test · 255/55 R16

Pros, cons & observations

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

Tire A Solus HS51 Harmony Sports

Pros

  • High level of ride comfort and low noise levels
  • Excellent value for money compared to premium brands
  • Strong wet weather performance

Cons

  • Excessive sidewall softness leading to a 'wobbling' or unstable sensation
  • Noticeable decline in grip levels before the tread is fully worn
  • Inconsistent handling performance depending on axle placement
All owner themes in the Solus HS51 Harmony Sports 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 · Kumho Solus HS51 Harmony Sports B · Yokohama BluEarth AE50
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available—28
Rim diameters—14″ – 18″

Which one should you actually buy?

Kumho Solus HS51 Harmony Sports

Yokohama BluEarth AE50

Narrow edge: Kumho Solus HS51 Harmony Sports — better treadwear and wet. Pick the Yokohama BluEarth AE50 if comfort matters most to you. Kumho Solus HS51 Harmony Sports rests on little evidence so far (1 test, 5 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

Kumho Solus HS51 Harmony Sports scores 66 vs 55 on treadwear.

Pick tire B You want the most comfortable ride

Yokohama BluEarth AE50 scores 66 vs 59 on comfort.

Pick tire A Your priority is wet-weather safety

Kumho Solus HS51 Harmony Sports scores 73 vs 67 on wet.

Tire A · Kumho Solus HS51 Harmony Sports
Check price on Amazon
Tire B · Yokohama BluEarth AE50
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Solus HS51 Harmony Sports or BluEarth AE50?

Which is better in the wet, Solus HS51 Harmony Sports or BluEarth AE50?

Kumho Solus HS51 Harmony Sports, 73 vs 67 on our wet score.

Which grips better on dry roads, Solus HS51 Harmony Sports or BluEarth AE50?

Neither, by our numbers: 66 vs 64 on the dry score, within 3 points.

Which is more comfortable, Solus HS51 Harmony Sports or BluEarth AE50?

Yokohama BluEarth AE50, 66 vs 59 on our comfort score.

Which lasts longer, Solus HS51 Harmony Sports or BluEarth AE50?

Kumho Solus HS51 Harmony Sports, 66 vs 55 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