Tests 70 · 2 tests Owners 73 · 18 reviews
Best test result: #3 of 10 in 2019 Auto Bild All Season Tyre Test (noise)
Head-to-head
Updated
Kumho Solus HA31 vs Yokohama BluEarth-4S AW21 — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Solus HA31 is ahead, 71–61
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Tests 58 · 5 tests Owners 64 · 972 reviews
Best test result: #3 of 16 in 2024 ADAC All Season Tyre Test (snow braking)
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
67
Dry
Solus HA31 +859Why this score
Source Solus HA31 BluEarth-4S AW21 Professional tests (TWG score) 64 55 Reviews found online 72 66 Dry Braking (% of best) 90% 90% Dry Handling (% of best) 97% 99% -
76
Wet
Solus HA31 +472Why this score
Source Solus HA31 BluEarth-4S AW21 Professional tests (TWG score) 75 71 Reviews found online 78 73 Wet Braking (% of best) 94% 92% Wet Handling (% of best) 95% 99% -
71
Snow
Solus HA31 +467Why this score
Source Solus HA31 BluEarth-4S AW21 Professional tests (TWG score) 66 67 Reviews found online 78 67 Snow Braking (% of best) 92% 95% Snow Handling (% of best) 97% 94% -
71
Comfort
Solus HA31 +566Why this score
Source Solus HA31 BluEarth-4S AW21 Reviews found online 73 62 -
71
Noise
Solus HA31 +1853Why this score
Source Solus HA31 BluEarth-4S AW21 Professional tests (TWG score) 72 45 Reviews found online 70 – -
70
Treadwear
Solus HA31 +2248Why this score
Source Solus HA31 BluEarth-4S AW21 Professional tests (TWG score) 71 46 Reviews found online 67 52 -
73
Handling
Solus HA31 +1063Why this score
Source Solus HA31 BluEarth-4S AW21 Reviews found online 73 63
Scores at a glance
| Category | Kumho Solus HA31 | Yokohama BluEarth-4S AW21 |
|---|---|---|
| Relative Score | 71 | 61 |
| Dry | 67 | 59 |
| Wet | 76 | 72 |
| Snow | 71 | 67 |
| Comfort | 71 | 66 |
| Noise | 71 | 53 |
| Treadwear | 70 | 48 |
| Handling | 73 | 63 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
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Recomputed
Headline score
71
/ 100
Solus HA31
61
/ 100
BluEarth-4S AW21
The professional test results behind the scores
Each result is shown as % of the best tire in that test. “Same test” rows are the strictest comparison: both tires were measured side by side.
| Discipline | Category | Solus HA31 | BluEarth-4S AW21 | Δ | Both? |
|---|---|---|---|---|---|
| Dry Braking | Dry | 90% #12/31 · 2019 All Season Tyre Performance Overview | 90% #13/31 · 2019 All Season Tyre Performance Overview | +0.6 | Same test |
| Dry Handling | Dry | 97% #9/10 · 2019 Auto Bild All Season Tyre Test | 99% #3/7 · 2025 Motor All Season Tyre Test | −2.2 | Different tests |
| Rolling Resistance | Efficiency | 84% #9/10 · 2019 Auto Bild All Season Tyre Test | 78% #7/7 · 2025 Motor All Season Tyre Test | +6.2 | Different tests |
| Noise | Other | 99% #3/10 · 2019 Auto Bild All Season Tyre Test | 98% #15/16 · 2024 ADAC All Season Tyre Test | +1.4 | Different tests |
| Wear | Other | 84% #5/10 · 2019 Auto Bild All Season Tyre Test | 56% #15/16 · 2024 ADAC All Season Tyre Test | +28.3 | Different tests |
| Overall Ranking | Overall | 11% #9/31 · 2019 All Season Tyre Performance Overview | 17% #6/7 · 2025 Motor All Season Tyre Test | −5.6 | Different tests |
| Snow Braking | Snow | 92% #6/10 · 2019 Auto Bild All Season Tyre Test | 95% #3/16 · 2024 ADAC All Season Tyre Test | −3.1 | Different tests |
| Snow Handling | Snow | 97% #8/10 · 2019 Auto Bild All Season Tyre Test | 94% #7/7 · 2025 Motor All Season Tyre Test | +3.0 | Different tests |
| Straight Aqua | Straight | 95% #7/10 · 2019 Auto Bild All Season Tyre Test | 87% #5/7 · 2025 Motor All Season Tyre Test | +8.0 | Different tests |
| Wet Braking | Wet | 94% #5/10 · 2019 Auto Bild All Season Tyre Test | 92% #11/16 · 2024 ADAC All Season Tyre Test | +1.3 | Different tests |
| Wet Handling | Wet | 95% #8/10 · 2019 Auto Bild All Season Tyre Test | 99% #2/7 · 2025 Motor All Season Tyre Test | −4.0 | Different tests |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Solus HA31
Pros
- Excellent snow and winter weather traction
- Strong grip and stability on wet and dry roads
- High value and competitive pricing compared to premium brands
Cons
- Higher than average road noise, particularly at highway speeds
- Tires can feel slightly soft in warmer weather conditions
- Mixed feedback regarding dry performance compared to dedicated summer options
Tire B BluEarth-4S AW21
Pros
- Excellent grip and stability on wet and flooded roads
- Strong traction and confidence-inspiring performance in snow and ice
- Good value for money compared to premium competitors
Cons
- Higher road noise levels ('howling' or noticeable hum) compared to some other brands
- Softer cornering feel and reduced precision during hot summer months
- Minor negative impact on fuel economy for some drivers
Specs side by side
| Attribute | A · Kumho Solus HA31 | B · Yokohama BluEarth-4S AW21 |
|---|---|---|
| Category | All Season | All Season |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 29 | 104 |
| Rim diameters | 13″ – 18″ | 14″ – 22″ |
| Tread depth | 10/32″ | — |
| UTQG | 420 A A | — |
| Sidewall | Blackwall | — |
| Max pressure | 50 psi | — |
Which one should you actually buy?
71
/ 100
Kumho Solus HA31
61
/ 100
Yokohama BluEarth-4S AW21
Winner: Kumho Solus HA31 — better treadwear, noise and handling. It leads or ties in every category we score.
Pick tire A
You want the longest tread life
Kumho Solus HA31 scores 70 vs 48 on treadwear.
Pick tire A
You want a quieter cabin
Kumho Solus HA31 scores 71 vs 53 on noise.
Pick tire A
You enjoy sharp, responsive handling
Kumho Solus HA31 scores 73 vs 63 on handling.
Pick tire A
You want the most grip on dry roads
Kumho Solus HA31 scores 67 vs 59 on dry.
Tire A · Kumho Solus HA31
Tire B · Yokohama BluEarth-4S AW21
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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.
Community buzz from Reddit and forums is shown for context only — it never changes the score.