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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

Bridgestone Ecopia EP300 vs Kumho Solus HS51 Harmony Sports — 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 17 + 5 owner reviews. How we score

Ecopia EP300 leads, 69–67 Narrow edge

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Kumho Solus HS51 Harmony Sports
Tire BKumho

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)

Category by category

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

  1. 68

    Dry

    Ecopia EP300 +2
    66
    Why this score
    SourceEcopia EP300Solus HS51 Harmony Sports
    Professional tests (TWG score) · – / 1 tests≈ 68 (est.)65
    Reviews found online6966

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

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

    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).

  2. 71

    Wet

    Solus HS51 Harmony Sports +2
    73
    Why this score
    SourceEcopia EP300Solus HS51 Harmony Sports
    Professional tests (TWG score) · – / 1 tests≈ 70 (est.)75
    Reviews found online7170

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

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

    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).

  3. 69

    Comfort

    Ecopia EP300 +10
    59
    Why this score
    SourceEcopia EP300Solus HS51 Harmony Sports
    Professional tests (TWG score) · – / 1 tests≈ 69 (est.)51
    Reviews found online6971

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

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

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

  4. 69

    Treadwear

    Ecopia EP300 +3
    66
    Why this score
    SourceEcopia EP300Solus HS51 Harmony Sports
    Professional tests (TWG score)≈ 67 (est.)≈ 66 (est.)
    Reviews found online7166

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

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

    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 Solus HS51 Harmony Sports. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  5. 69

    Handling (owners)

    Ecopia EP300 +8
    61
    Why this score
    SourceEcopia EP300Solus HS51 Harmony Sports
    Reviews found online6961
Scores at a glance
CategoryBridgestone Ecopia EP300Kumho Solus HS51 Harmony Sports
Relative Score 69 67
Dry 68 66
Wet 71 73
Comfort 69 59
Treadwear 69 66
Handling (owners) 69 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

Ecopia EP300

Solus HS51 Harmony Sports

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 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

Specs side by side

Attribute A · Bridgestone Ecopia EP300 B · Kumho Solus HS51 Harmony Sports
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available29—
Rim diameters15″ – 18″—

Which one should you actually buy?

Bridgestone Ecopia EP300

Kumho Solus HS51 Harmony Sports

Narrow edge: Bridgestone Ecopia EP300 — better comfort, handling and treadwear. Where the Kumho Solus HS51 Harmony Sports is ahead, it is by less than 3 points. Bridgestone Ecopia EP300 rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional. 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 most comfortable ride

Bridgestone Ecopia EP300 scores 69 vs 59 on comfort.

Pick tire A You enjoy sharp, responsive handling

Bridgestone Ecopia EP300 scores 69 vs 61 on handling.

Pick tire A You want the longest tread life

Bridgestone Ecopia EP300 scores 69 vs 66 on treadwear.

Tire A · Bridgestone Ecopia EP300
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Tire B · Kumho Solus HS51 Harmony Sports
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Ecopia EP300 or Solus HS51 Harmony Sports?

Which is better in the wet, Ecopia EP300 or Solus HS51 Harmony Sports?

Neither, by our numbers: 71 vs 73 on the wet score, within 3 points.

Which grips better on dry roads, Ecopia EP300 or Solus HS51 Harmony Sports?

Neither, by our numbers: 68 vs 66 on the dry score, within 3 points.

Which is more comfortable, Ecopia EP300 or Solus HS51 Harmony Sports?

Bridgestone Ecopia EP300, 69 vs 59 on our comfort score.

Which lasts longer, Ecopia EP300 or Solus HS51 Harmony Sports?

Bridgestone Ecopia EP300, 69 vs 66 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