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Head-to-head Updated

Cooper WeatherMaster SA2 vs Bridgestone Alenza AS Ultra — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 0 + 0 road tests and 6 + 13 owner reviews. How we score

WeatherMaster SA2 leads, 68–64 Narrow edge

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Cooper WeatherMaster SA2
Tire ACooper

WeatherMaster SA2

Touring Winter tire

± 8Provisional

Tests – · none yet Owners 68 · 6 reviews

Category by category

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

  1. 67

    Dry

    WeatherMaster SA2 +1
    66
    Why this score
    SourceWeatherMaster SA2Alenza AS Ultra
    Professional tests (TWG score)≈ 67 (est.)≈ 67 (est.)
    Reviews found online6765

    WeatherMaster SA2: 60% × 67.4 (est.) + 40% × 66.7 = 67

    Alenza AS Ultra: 60% × 66.6 (est.) + 40% × 64.7 = 66

    No road tests of dry for WeatherMaster SA2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

    No road tests of dry for Alenza AS Ultra. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 71

    Wet

    WeatherMaster SA2 +2
    69
    Why this score
    SourceWeatherMaster SA2Alenza AS Ultra
    Professional tests (TWG score)≈ 71 (est.)≈ 70 (est.)
    Reviews found online7169

    WeatherMaster SA2: 60% × 70.7 (est.) + 40% × 70.7 = 71

    Alenza AS Ultra: 60% × 69.7 (est.) + 40% × 68.8 = 69

    No road tests of wet for WeatherMaster SA2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

    No road tests of wet for Alenza AS Ultra. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. –

    Snow

    No comparison
    70
    Why this score
    SourceWeatherMaster SA2Alenza AS Ultra
    Professional tests (TWG score)–≈ 70 (est.)
    Reviews found online–69

    Alenza AS Ultra: 60% × 70 (est.) + 40% × 68.9 = 70

    No road tests of snow for Alenza AS Ultra. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 65

    Comfort

    WeatherMaster SA2 +1
    64
    Why this score
    SourceWeatherMaster SA2Alenza AS Ultra
    Professional tests (TWG score)≈ 68 (est.)≈ 67 (est.)
    Reviews found online6362

    WeatherMaster SA2: 40% × 67.6 (est.) + 60% × 63.2 = 65

    Alenza AS Ultra: 40% × 67.3 (est.) + 60% × 62.1 = 64

    No road tests of comfort for WeatherMaster SA2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

    No road tests of comfort for Alenza AS Ultra. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. –

    Noise

    No comparison
    62
    Why this score
    SourceWeatherMaster SA2Alenza AS Ultra
    Professional tests (TWG score)–≈ 66 (est.)
    Reviews found online–56

    Alenza AS Ultra: 60% × 66.4 (est.) + 40% × 56 = 62

    No road tests of noise for Alenza AS Ultra. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 67

    Treadwear

    WeatherMaster SA2 +13
    54
    Why this score
    SourceWeatherMaster SA2Alenza AS Ultra
    Professional tests (TWG score)≈ 67 (est.)≈ 59 (est.)
    Reviews found online6746

    WeatherMaster SA2: 60% × 66.8 (est.) + 40% × 67.2 = 67

    Alenza AS Ultra: 60% × 59.3 (est.) + 40% × 46.4 = 54

    No road tests of treadwear for WeatherMaster SA2. 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 Alenza AS Ultra. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 66

    Handling (owners)

    WeatherMaster SA2 +3
    63
    Why this score
    SourceWeatherMaster SA2Alenza AS Ultra
    Reviews found online6663
Scores at a glance
CategoryCooper WeatherMaster SA2Bridgestone Alenza AS Ultra
Relative Score 68 64
Dry 67 66
Wet 71 69
Snow – 70
Comfort 65 64
Noise – 62
Treadwear 67 54
Handling (owners) 66 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 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
Neutral
NotLessNeutralImportantMost

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

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
± 8

WeatherMaster SA2

± 8

Alenza AS Ultra

Only categories both tires have data for count toward the headline score.

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A WeatherMaster SA2

Pros

  • Exceptional traction and grip in deep snow and ice
  • High value-for-money proposition compared to premium competitors
  • Impressive tread longevity over extended mileage

Cons

  • Increased road noise reported by some users
  • Performance may feel less refined than top-tier premium winter tires
All owner themes in the WeatherMaster SA2 review

Tire B Alenza AS Ultra

Pros

  • Strong traction on both wet and dry road surfaces
  • Improved ride comfort and handling compared to some factory-installed alternatives
  • Capable performance in varied weather conditions for some users

Cons

  • Reports of premature tread wear and short service life
  • Noticeable road noise compared to other premium tires
  • Inconsistent performance in severe winter conditions, particularly on ice and deep snow
All owner themes in the Alenza AS Ultra review

Specs side by side

Attribute A · Cooper WeatherMaster SA2 B · Bridgestone Alenza AS Ultra
CategoryTouring Winter tireAll Season
Vehicle typePassenger Car / CrossoverSUV and 4x4
Sizes available—46
Rim diameters—16″ – 22″
Tread depth—10/32″
UTQG—800 A A
Treadwear warranty—80,000 mi
Sidewall—Blackwall
Max pressure—44 psi

Which one should you actually buy?

Cooper WeatherMaster SA2

Bridgestone Alenza AS Ultra

Narrow edge: Cooper WeatherMaster SA2 — better treadwear. It leads or ties in every category we score. Cooper WeatherMaster SA2 rests on little evidence so far (0 tests, 6 reviews), so read this result as provisional. Bridgestone Alenza AS Ultra rests on little evidence so far (0 tests, 13 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

Cooper WeatherMaster SA2 scores 67 vs 54 on treadwear.

Tire A · Cooper WeatherMaster SA2
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Tire B · Bridgestone Alenza AS Ultra
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WeatherMaster SA2 or Alenza AS Ultra?

Which is better in the wet, WeatherMaster SA2 or Alenza AS Ultra?

Neither, by our numbers: 71 vs 69 on the wet score, within 3 points.

Which grips better on dry roads, WeatherMaster SA2 or Alenza AS Ultra?

Neither, by our numbers: 67 vs 66 on the dry score, within 3 points.

Which is more comfortable, WeatherMaster SA2 or Alenza AS Ultra?

Neither, by our numbers: 65 vs 64 on the comfort score, within 3 points.

Which lasts longer, WeatherMaster SA2 or Alenza AS Ultra?

Cooper WeatherMaster SA2, 67 vs 54 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