Tests 80 · 5 tests Owners 79 · 773 reviews
Best test result: #1 of 12 in 2023 Best SUV Tyres Tested (noise)
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
Goodyear EfficientGrip 2 SUV 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 5 + 1 road tests and 773 + 5 owner reviews. How we score
EfficientGrip 2 SUV is ahead, 79–67
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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.
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79
Dry
EfficientGrip 2 SUV +1366Why this score
Source EfficientGrip 2 SUV Solus HS51 Harmony Sports Professional tests (TWG score) · 5 / 1 tests 77 65 Reviews found online 83 66 EfficientGrip 2 SUV: 60% × 76.9 + 40% × 82.8 = 79
Solus HS51 Harmony Sports: 60% × 65.4 + 40% × 65.8 = 66
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80
Wet
EfficientGrip 2 SUV +773Why this score
Source EfficientGrip 2 SUV Solus HS51 Harmony Sports Professional tests (TWG score) · 5 / 1 tests 81 75 Reviews found online 79 70 EfficientGrip 2 SUV: 60% × 81 + 40% × 79.1 = 80
Solus HS51 Harmony Sports: 60% × 75.3 + 40% × 70.4 = 73
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79
Comfort
EfficientGrip 2 SUV +2059Why this score
Source EfficientGrip 2 SUV Solus HS51 Harmony Sports Professional tests (TWG score) · 2 / 1 tests 80 51 Reviews found online 77 71 EfficientGrip 2 SUV: 60% × 80.1 + 40% × 76.6 = 79
Solus HS51 Harmony Sports: 60% × 51 + 40% × 70.7 = 59
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83
Noise
No comparison–Why this score
Source EfficientGrip 2 SUV Solus HS51 Harmony Sports Professional tests (TWG score) · 5 / – tests 93 – Reviews found online ≈ 67 (est.) – EfficientGrip 2 SUV: 60% × 93.4 + 40% × 67.3 (est.) = 83
No owner ratings of noise for EfficientGrip 2 SUV. 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.
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79
Treadwear
EfficientGrip 2 SUV +1366Why this score
Source EfficientGrip 2 SUV Solus HS51 Harmony Sports Professional tests (TWG score) · 1 / – tests 80 ≈ 66 (est.) Reviews found online 77 66 EfficientGrip 2 SUV: 60% × 79.5 + 40% × 77.2 = 79
Solus HS51 Harmony Sports: 60% × 65.7 (est.) + 40% × 65.9 = 66
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).
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79
Handling (owners)
EfficientGrip 2 SUV +1861Why this score
Source EfficientGrip 2 SUV Solus HS51 Harmony Sports Reviews found online 79 61
Scores at a glance
| Category | Goodyear EfficientGrip 2 SUV | Kumho Solus HS51 Harmony Sports |
|---|---|---|
| Relative Score | 79 | 67 |
| Dry | 79 | 66 |
| Wet | 80 | 73 |
| Comfort | 79 | 59 |
| Noise | 83 | – |
| Treadwear | 79 | 66 |
| Handling (owners) | 79 | 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
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
79
/ 100
EfficientGrip 2 SUV
67
/ 100
Solus HS51 Harmony Sports
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.
| Discipline | Category | EfficientGrip 2 SUV | Solus HS51 Harmony Sports | Δ | Head-to-head |
|---|---|---|---|---|---|
| Dry Braking | Dry | 94% #5/8 · 2025 EV Tyre Test | 91% #9/10 · 2020 Teknikens 17 Inch Summer Tyre Test | – | Different tests |
| Straight Aquaplaning | Wet | 89% #4/8 · 2025 EV Tyre Test | 100% #1/10 · 2020 Teknikens 17 Inch Summer Tyre Test | – | Different tests |
| Wet Braking | Wet | 93% #4/8 · 2025 EV Tyre Test | 95% #5/10 · 2020 Teknikens 17 Inch Summer Tyre Test | – | Different tests |
| Wet Handling | Wet | 98% #3/8 · 2025 EV Tyre Test | 99% #4/10 · 2020 Teknikens 17 Inch Summer Tyre Test | – | Different tests |
| Comfort (tester's mark) | Comfort | 100% #1/8 · 2025 EV Tyre Test | 20% #9/10 · 2020 Teknikens 17 Inch Summer Tyre Test | – | Different tests |
| Also published by the testers (not in the score) | |||||
| Rolling Resistance | Efficiency | 82% #4/8 · 2025 EV Tyre Test | 94% #10/10 · 2020 Teknikens 17 Inch Summer Tyre Test | – | Different tests |
| Overall Ranking | Overall | #3/8 2025 EV Tyre Test | #7/10 2020 Teknikens 17 Inch Summer Tyre Test | – | Different tests |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A EfficientGrip 2 SUV
Pros
- Exceptionally low road noise and high cabin comfort
- Strong and confidence-inspiring grip in both wet and dry conditions
- Impressive tread wear and long-term durability
Cons
- Soft sidewalls can compromise responsive handling and cornering feedback
- Less effective performance in cold, freezing, or damp winter conditions
- Lack of built-in rim protection
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
Specs side by side
| Attribute | A · Goodyear EfficientGrip 2 SUV | B · Kumho Solus HS51 Harmony Sports |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | SUV and 4x4 | Passenger Car / Crossover |
| Sizes available | 41 | — |
| Rim diameters | 16″ – 22″ | — |
Which one should you actually buy?
79
/ 100
Goodyear EfficientGrip 2 SUV
67
/ 100
Kumho Solus HS51 Harmony Sports
Winner: Goodyear EfficientGrip 2 SUV — better comfort, handling and dry. It leads or ties in every category we score. 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
Goodyear EfficientGrip 2 SUV scores 79 vs 59 on comfort.
Pick tire A
You enjoy sharp, responsive handling
Goodyear EfficientGrip 2 SUV scores 79 vs 61 on handling.
Pick tire A
You want the most grip on dry roads
Goodyear EfficientGrip 2 SUV scores 79 vs 66 on dry.
Pick tire A
You want the longest tread life
Goodyear EfficientGrip 2 SUV scores 79 vs 66 on treadwear.
Tire A · Goodyear EfficientGrip 2 SUV
Tire B · Kumho Solus HS51 Harmony Sports
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EfficientGrip 2 SUV or Solus HS51 Harmony Sports?
Which is better in the wet, EfficientGrip 2 SUV or Solus HS51 Harmony Sports?
Goodyear EfficientGrip 2 SUV, 80 vs 73 on our wet score.
Which grips better on dry roads, EfficientGrip 2 SUV or Solus HS51 Harmony Sports?
Goodyear EfficientGrip 2 SUV, 79 vs 66 on our dry score.
Which is more comfortable, EfficientGrip 2 SUV or Solus HS51 Harmony Sports?
Goodyear EfficientGrip 2 SUV, 79 vs 59 on our comfort score.
Which lasts longer, EfficientGrip 2 SUV or Solus HS51 Harmony Sports?
Goodyear EfficientGrip 2 SUV, 79 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