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Head-to-head Updated

Bridgestone Alenza AS Ultra vs Cooper WeatherMaster SA2 — 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 13 + 6 owner reviews. How we score

WeatherMaster SA2 leads, 68–64 Narrow edge

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Cooper WeatherMaster SA2
Tire BCooper

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. 66

    Dry

    WeatherMaster SA2 +1
    67
    Why this score
    SourceAlenza AS UltraWeatherMaster SA2
    Professional tests (TWG score)≈ 67 (est.)≈ 67 (est.)
    Reviews found online6567

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

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

    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).

    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).

  2. 69

    Wet

    WeatherMaster SA2 +2
    71
    Why this score
    SourceAlenza AS UltraWeatherMaster SA2
    Professional tests (TWG score)≈ 70 (est.)≈ 71 (est.)
    Reviews found online6971

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

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

    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).

    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).

  3. 70

    Snow

    No comparison
    –
    Why this score
    SourceAlenza AS UltraWeatherMaster SA2
    Professional tests (TWG score)≈ 70 (est.)–
    Reviews found online69–

    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. 64

    Comfort

    WeatherMaster SA2 +1
    65
    Why this score
    SourceAlenza AS UltraWeatherMaster SA2
    Professional tests (TWG score)≈ 67 (est.)≈ 68 (est.)
    Reviews found online6263

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

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

    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).

    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).

  5. 62

    Noise

    No comparison
    –
    Why this score
    SourceAlenza AS UltraWeatherMaster SA2
    Professional tests (TWG score)≈ 66 (est.)–
    Reviews found online56–

    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. 54

    Treadwear

    WeatherMaster SA2 +13
    67
    Why this score
    SourceAlenza AS UltraWeatherMaster SA2
    Professional tests (TWG score)≈ 59 (est.)≈ 67 (est.)
    Reviews found online4667

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

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

    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).

    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).

  7. 63

    Handling (owners)

    WeatherMaster SA2 +3
    66
    Why this score
    SourceAlenza AS UltraWeatherMaster SA2
    Reviews found online6366
Scores at a glance
CategoryBridgestone Alenza AS UltraCooper WeatherMaster SA2
Relative Score 64 68
Dry 66 67
Wet 69 71
Snow 70 –
Comfort 64 65
Noise 62 –
Treadwear 54 67
Handling (owners) 63 66

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

Alenza AS Ultra

± 8

WeatherMaster SA2

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 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

Tire B 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

Specs side by side

Attribute A · Bridgestone Alenza AS Ultra B · Cooper WeatherMaster SA2
CategoryAll SeasonTouring Winter tire
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available46—
Rim diameters16″ – 22″—
Tread depth10/32″—
UTQG800 A A—
Treadwear warranty80,000 mi—
SidewallBlackwall—
Max pressure44 psi—

Which one should you actually buy?

Bridgestone Alenza AS Ultra

Cooper WeatherMaster SA2

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

Pick tire B You want the longest tread life

Cooper WeatherMaster SA2 scores 67 vs 54 on treadwear.

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

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

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

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

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

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

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

Which lasts longer, Alenza AS Ultra or WeatherMaster SA2?

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