Tests 71 · 1 test Owners 74 · 13 reviews
Best test result: #2 of 10 in 2017 Autocenter Studded Winter Tyre Test (wet braking)
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 1 + 1 road tests and 13 + 33 owner reviews. How we score
WeatherMaster WSC is ahead, 72–65
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Tests 71 · 1 test Owners 74 · 13 reviews
Best test result: #2 of 10 in 2017 Autocenter Studded Winter Tyre Test (wet braking)
Tests 64 · 1 test Owners 69 · 33 reviews
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | WeatherMaster WSC | Altimax Arctic 12 |
|---|---|---|
| Professional tests (TWG score) · 1 / 1 tests | 69 | 47 |
| Reviews found online | 71 | 53 |
WeatherMaster WSC: 60% × 69.4 + 40% × 70.9 = 70
Altimax Arctic 12: 60% × 47.2 + 40% × 52.9 = 49
| Source | WeatherMaster WSC | Altimax Arctic 12 |
|---|---|---|
| Professional tests (TWG score) · 1 / 1 tests | 77 | 66 |
| Reviews found online | 78 | 72 |
WeatherMaster WSC: 60% × 77.2 + 40% × 78.4 = 78
Altimax Arctic 12: 60% × 65.9 + 40% × 72.3 = 68
| Source | WeatherMaster WSC | Altimax Arctic 12 |
|---|---|---|
| Professional tests (TWG score) · 1 / 1 tests | 67 | 74 |
| Reviews found online | 75 | 80 |
WeatherMaster WSC: 60% × 67 + 40% × 75.1 = 70
Altimax Arctic 12: 60% × 74 + 40% × 79.8 = 76
| Source | WeatherMaster WSC | Altimax Arctic 12 |
|---|---|---|
| Professional tests (TWG score) · – / 1 tests | ≈ 68 (est.) | 69 |
| Reviews found online | 66 | 62 |
WeatherMaster WSC: 40% × 68.2 (est.) + 60% × 66.4 = 67
Altimax Arctic 12: 40% × 68.8 + 60% × 62 = 65
No road tests of comfort for WeatherMaster WSC. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
| Source | WeatherMaster WSC | Altimax Arctic 12 |
|---|---|---|
| Professional tests (TWG score) · – / 1 tests | – | 72 |
| Reviews found online | – | 63 |
Altimax Arctic 12: 60% × 72.4 + 40% × 62.9 = 69
| Source | WeatherMaster WSC | Altimax Arctic 12 |
|---|---|---|
| Professional tests (TWG score) | ≈ 69 (est.) | ≈ 69 (est.) |
| Reviews found online | 74 | 74 |
WeatherMaster WSC: 60% × 69.2 (est.) + 40% × 74 = 71
Altimax Arctic 12: 60% × 69.2 (est.) + 40% × 73.9 = 71
No road tests of treadwear for WeatherMaster WSC. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
No road tests of treadwear for Altimax Arctic 12. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
| Source | WeatherMaster WSC | Altimax Arctic 12 |
|---|---|---|
| Reviews found online | 71 | 65 |
| Category | Cooper WeatherMaster WSC | General Altimax Arctic 12 |
|---|---|---|
| Relative Score | 72 | 65 |
| Dry | 70 | 49 |
| Wet | 78 | 68 |
| Snow | 70 | 76 |
| Comfort | 67 | 65 |
| Noise | – | 69 |
| Treadwear | 71 | 71 |
| Handling (owners) | 71 | 65 |
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.
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
WeatherMaster WSC
Altimax Arctic 12
Only categories both tires have data for count toward the headline score.
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 | WeatherMaster WSC | Altimax Arctic 12 | Δ | Head-to-head |
|---|---|---|---|---|---|
| Dry Braking | Dry | 97% #6/10 · 2017 Autocenter Studded Winter Tyre Test | 81% #9/10 · 2026 Tire Rack All-Weather vs Winter Tyre Test | – | Different tests |
| Wet Braking | Wet | 96% #2/10 · 2017 Autocenter Studded Winter Tyre Test | 76% #9/10 · 2026 Tire Rack All-Weather vs Winter Tyre Test | – | Different tests |
| Ice Braking | Snow | 69% #9/10 · 2017 Autocenter Studded Winter Tyre Test | 84% #9/10 · 2026 Tire Rack All-Weather vs Winter Tyre Test | – | Different tests |
| Snow Braking | Snow | 98% #5/10 · 2017 Autocenter Studded Winter Tyre Test | 75% #9/10 · 2026 Tire Rack All-Weather vs Winter Tyre Test | – | Different tests |
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #11/9 2018 Autofil Studdable Winter Tire Test R16 | #9/10 2026 Tire Rack All-Weather vs Winter Tyre Test | – | Different tests |
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
| Attribute | A · Cooper WeatherMaster WSC | B · General Altimax Arctic 12 |
|---|---|---|
| Category | Winter | Winter |
| Vehicle type | SUV and 4x4 | Passenger Car / Crossover |
| Sizes available | — | 38 |
| Rim diameters | — | 15″ – 19″ |
| Tread depth | — | 12/32″ |
| Sidewall | — | Blackwall |
| Max pressure | — | 51 psi |
Cooper WeatherMaster WSC
General Altimax Arctic 12
Winner: Cooper WeatherMaster WSC — better dry, wet and handling. Pick the General Altimax Arctic 12 if snow matters most to you. Cooper WeatherMaster WSC rests on little evidence so far (1 test, 13 reviews), so read this result as provisional.
Cooper WeatherMaster WSC scores 70 vs 49 on dry.
Cooper WeatherMaster WSC scores 78 vs 68 on wet.
Cooper WeatherMaster WSC scores 71 vs 65 on handling.
General Altimax Arctic 12 scores 76 vs 70 on snow.
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Cooper WeatherMaster WSC, 78 vs 68 on our wet score.
Cooper WeatherMaster WSC, 70 vs 49 on our dry score.
General Altimax Arctic 12, 76 vs 70 on our snow score.
Neither, by our numbers: 67 vs 65 on the comfort score, within 3 points.
Neither, by our numbers: 71 vs 71 on the treadwear 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