Tests 69 · 5 tests Owners 73 · 3 reviews
Best test result: #4 of 20 in 2020 Auto Bild Performance Winter Tyre Test (snow traction)
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 5 + 2 road tests and 3 + 14 owner reviews. How we score
Too close to call: Altimax Winter 3 and Observe GSi-6 HP are level at 71.
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Tests 69 · 5 tests Owners 73 · 3 reviews
Best test result: #4 of 20 in 2020 Auto Bild Performance Winter Tyre Test (snow traction)
Tests 69 · 2 tests Owners 73 · 14 reviews
Best test result: #5 of 20 in 2020 Nordic and Studded Winter Tyre Test (dry braking)
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Professional tests (TWG score) · 1 / 1 tests | 59 | 73 |
| Reviews found online | 72 | 77 |
Altimax Winter 3: 60% × 58.7 + 40% × 71.5 = 64
Observe GSi-6 HP: 60% × 73 + 40% × 76.9 = 75
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Professional tests (TWG score) · 5 / 2 tests | 69 | 71 |
| Reviews found online | 74 | 81 |
Altimax Winter 3: 60% × 69.4 + 40% × 74.4 = 71
Observe GSi-6 HP: 60% × 71.5 + 40% × 80.8 = 75
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Professional tests (TWG score) · 3 / 2 tests | 78 | 60 |
| Reviews found online | 77 | 75 |
Altimax Winter 3: 60% × 77.7 + 40% × 77.3 = 78
Observe GSi-6 HP: 60% × 59.5 + 40% × 74.7 = 66
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Professional tests (TWG score) · – / 1 tests | ≈ 69 (est.) | 77 |
| Reviews found online | 69 | 74 |
Altimax Winter 3: 40% × 68.6 (est.) + 60% × 68.6 = 69
Observe GSi-6 HP: 40% × 76.7 + 60% × 73.9 = 75
No road tests of comfort for Altimax Winter 3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Professional tests (TWG score) · 1 / 1 tests | 76 | 72 |
| Reviews found online | ≈ 66 (est.) | ≈ 66 (est.) |
Altimax Winter 3: 60% × 75.7 + 40% × 66.4 (est.) = 72
Observe GSi-6 HP: 60% × 71.6 + 40% × 66.4 (est.) = 70
No owner ratings of noise for Altimax Winter 3 or Observe GSi-6 HP. The owner half is the owners’ average (66): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 69 | ≈ 64 (est.) |
| Reviews found online | 71 | 59 |
Altimax Winter 3: 60% × 68.9 + 40% × 70.6 = 70
Observe GSi-6 HP: 60% × 63.6 (est.) + 40% × 58.5 = 62
No road tests of treadwear for Observe GSi-6 HP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Reviews found online | 72 | 75 |
| Source | Altimax Winter 3 | Observe GSi-6 HP |
|---|---|---|
| Professional tests (TWG score) · 1 / 1 tests | 65 | 66 |
| Category | General Altimax Winter 3 | Toyo Observe GSi-6 HP |
|---|---|---|
| Relative Score | 71 | 71 |
| Dry | 64 | 75 |
| Wet | 71 | 75 |
| Snow | 78 | 66 |
| Comfort | 69 | 75 |
| Noise | 72 | 70 |
| Treadwear | 70 | 62 |
| Handling (owners) | 72 | 75 |
| Efficiency | 65 | 66 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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.
Altimax Winter 3
Observe GSi-6 HP
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 | Altimax Winter 3 | Observe GSi-6 HP | Δ | Head-to-head |
|---|---|---|---|---|---|
| Dry Braking | Dry | 92% #17/20 · 2020 Auto Bild Performance Winter Tyre Test | 97% #5/20 · 2020 Nordic and Studded Winter Tyre Test | – | Different tests |
| Straight Aquaplaning | Wet | 90% #20/20 · 2020 Auto Bild Performance Winter Tyre Test | 83% #9/20 · 2025 Studded, Friction and European Winter Tyre Test | – | Different tests |
| Wet Braking | Wet | 86% #36/56 · 2022 Winter Tyre Market Overview | 81% #7/20 · 2020 Nordic and Studded Winter Tyre Test | – | Different tests |
| Wet Handling | Wet | 94% #18/20 · 2020 Auto Bild Performance Winter Tyre Test | 97% #8/20 · 2020 Nordic and Studded Winter Tyre Test | – | Different tests |
| Snow Braking | Snow | 95% #14/35 · 2021 Winter Tyre Market Overview | 99% #8/20 · 2020 Nordic and Studded Winter Tyre Test | – | Different tests |
| Snow Handling | Snow | 97% #16/20 · 2020 Auto Bild Performance Winter Tyre Test | 98% #12/20 · 2020 Nordic and Studded Winter Tyre Test | – | Different tests |
| Snow Traction | Snow | 97% #4/20 · 2020 Auto Bild Performance Winter Tyre Test | 95% #16/20 · 2020 Nordic and Studded Winter Tyre Test | – | Different tests |
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #35/56 2022 Winter Tyre Market Overview | #12/20 2025 Studded, Friction and European Winter Tyre Test | – | Different tests |
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
| Attribute | A · General Altimax Winter 3 | B · Toyo Observe GSi-6 HP |
|---|---|---|
| Category | Winter | Winter |
| Vehicle type | Passenger Car / Crossover | — |
| Sizes available | 38 | 39 |
| Rim diameters | 13″ – 19″ | 16″ – 21″ |
| Tread depth | — | 11 - 12/32″ |
| Sidewall | — | Black Side Wall |
| Max pressure | — | 50 - 51 psi |
| Sizes in common | 15 | 15 |
General Altimax Winter 3
Toyo Observe GSi-6 HP
Too close to call: General Altimax Winter 3 and Toyo Observe GSi-6 HP are within 2 points overall. General Altimax Winter 3 is stronger on snow and treadwear. Toyo Observe GSi-6 HP is stronger on dry, comfort and wet.
General Altimax Winter 3 scores 78 vs 66 on snow.
Toyo Observe GSi-6 HP scores 75 vs 64 on dry.
General Altimax Winter 3 scores 70 vs 62 on treadwear.
Toyo Observe GSi-6 HP scores 75 vs 69 on comfort.
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Toyo Observe GSi-6 HP, 75 vs 71 on our wet score.
Toyo Observe GSi-6 HP, 75 vs 64 on our dry score.
General Altimax Winter 3, 78 vs 66 on our snow score.
Neither, by our numbers: 72 vs 70 on the noise score, within 3 points.
Toyo Observe GSi-6 HP, 75 vs 69 on our comfort score.
General Altimax Winter 3, 70 vs 62 on our treadwear score.
Neither, by our numbers: 65 vs 66 on the efficiency score, within 3 points.
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