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Head-to-head Updated

Cooper WeatherMaster WSC vs Hankook iON FlexClimate — 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 1 + 3 road tests and 13 + 12 owner reviews. How we score

iON FlexClimate is ahead, 88–72

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Cooper WeatherMaster WSC
Tire ACooper

WeatherMaster WSC

Winter

± 8Provisional

Tests 71 · 1 test Owners 74 · 13 reviews

Best test result: #2 of 10 in 2017 Autocenter Studded Winter Tyre Test (wet braking)

Hankook iON FlexClimate
Tire BHankook

iON FlexClimate

All Season

± 5

Tests 88 · 3 tests Owners 86 · 12 reviews

Best test result: #1 of 8 in 2026 AutoBild All Season Tyre Test for EVs (215/55 R18) (dry handling)

Category by category

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

  1. 70

    Dry

    iON FlexClimate +23
    93
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Professional tests (TWG score) · 1 / 3 tests69100
    Reviews found online7184

    WeatherMaster WSC: 60% × 69.4 + 40% × 70.9 = 70

    iON FlexClimate: 60% × 99.5 + 40% × 83.6 = 93

  2. 78

    Wet

    iON FlexClimate +14
    92
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Professional tests (TWG score) · 1 / 3 tests7794
    Reviews found online7889

    WeatherMaster WSC: 60% × 77.2 + 40% × 78.4 = 78

    iON FlexClimate: 60% × 94.4 + 40% × 88.8 = 92

  3. 70

    Snow

    iON FlexClimate +11
    81
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Professional tests (TWG score) · 1 / 3 tests6782
    Reviews found online7580

    WeatherMaster WSC: 60% × 67 + 40% × 75.2 = 70

    iON FlexClimate: 60% × 81.9 + 40% × 80 = 81

  4. 67

    Comfort

    iON FlexClimate +12
    79
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Professional tests (TWG score) · – / 1 tests≈ 68 (est.)72
    Reviews found online6683

    WeatherMaster WSC: 40% × 68.2 (est.) + 60% × 66.4 = 67

    iON FlexClimate: 40% × 71.9 + 60% × 83.3 = 79

    No road tests of comfort for WeatherMaster WSC. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. –

    Noise

    No comparison
    72
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Professional tests (TWG score) · – / 1 tests–76
    Reviews found online–≈ 66 (est.)

    iON FlexClimate: 60% × 76.2 + 40% × 66.4 (est.) = 72

    No owner ratings of noise for iON FlexClimate. 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.

  6. 71

    Treadwear

    iON FlexClimate +13
    84
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Professional tests (TWG score) · – / 1 tests≈ 69 (est.)81
    Reviews found online7488

    WeatherMaster WSC: 60% × 69.2 (est.) + 40% × 74 = 71

    iON FlexClimate: 60% × 81.3 + 40% × 88.3 = 84

    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).

  7. 71

    Handling (owners)

    iON FlexClimate +14
    85
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Reviews found online7185
  8. –

    Efficiency

    No comparison
    71
    Why this score
    SourceWeatherMaster WSCiON FlexClimate
    Professional tests (TWG score) · – / 2 tests–71
Scores at a glance
CategoryCooper WeatherMaster WSCHankook iON FlexClimate
Relative Score 72 88
Dry 70 93
Wet 78 92
Snow 70 81
Comfort 67 79
Noise – 72
Treadwear 71 84
Handling (owners) 71 85
Efficiency – 71

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
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
Not important
NotLessNeutralImportantMost

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

Recomputed
Headline score
± 8

WeatherMaster WSC

± 5

iON FlexClimate

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

The professional test results behind the scores

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.

DisciplineCategoryWeatherMaster WSCiON FlexClimateΔHead-to-head
Dry Braking Dry 97% #6/10 · 2017 Autocenter Studded Winter Tyre Test 99% #2/8 · 2026 AutoBild All Season Tyre Test for EVs (215/55 R18) – Different tests
Wet Braking Wet 96% #2/10 · 2017 Autocenter Studded Winter Tyre Test 100% #1/8 · 2026 AutoBild All Season Tyre Test for EVs (215/55 R18) – Different tests
Snow Braking Snow 98% #5/10 · 2017 Autocenter Studded Winter Tyre Test 99% #4/8 · 2026 AutoBild All Season Tyre Test for EVs (215/55 R18) – Different tests
Also published by the testers (not in the score)
Overall Ranking Overall #11/9 2018 Autofil Studdable Winter Tire Test R16 #1/8 2026 AutoBild All Season Tyre Test for EVs (215/55 R18) – Different tests

Pros, cons & observations

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

Tire A WeatherMaster WSC

Pros

  • Exceptional traction and grip in deep snow, packed snow, and slush
  • Strong performance on ice, especially when studded
  • Great value and reasonable price point compared to competing brands

Cons

  • Increased road noise, particularly as temperatures rise
  • Stiffer ride quality that can transmit more road bumps into the cabin
  • Reduced performance, increased squirm, and accelerated wear when driven in warm summer or dry conditions
All owner themes in the WeatherMaster WSC review

Tire B iON FlexClimate

Pros

  • Exceptionally low road noise and quiet cabin experience
  • Superior ride comfort over bumpy roads
  • Excellent grip and braking performance in wet and snowy winter conditions

Cons

  • Slightly reduced dry grip compared to dedicated summer tires
  • Some EV drivers reported a noticeable negative impact on driving range and efficiency
All owner themes in the iON FlexClimate review

Specs side by side

Attribute A · Cooper WeatherMaster WSC B · Hankook iON FlexClimate
CategoryWinterAll Season
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available—15
Rim diameters—18″ – 20″

Which one should you actually buy?

Cooper WeatherMaster WSC

Hankook iON FlexClimate

Winner: Hankook iON FlexClimate — better dry, wet and handling. It leads or ties in every category we score. Cooper WeatherMaster WSC rests on little evidence so far (1 test, 13 reviews), so read this result as provisional.

Pick tire B You want the most grip on dry roads

Hankook iON FlexClimate scores 93 vs 70 on dry.

Pick tire B Your priority is wet-weather safety

Hankook iON FlexClimate scores 92 vs 78 on wet.

Pick tire B You enjoy sharp, responsive handling

Hankook iON FlexClimate scores 85 vs 71 on handling.

Pick tire B You want the longest tread life

Hankook iON FlexClimate scores 84 vs 71 on treadwear.

Tire A · Cooper WeatherMaster WSC
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Tire B · Hankook iON FlexClimate
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WeatherMaster WSC or iON FlexClimate?

Which is better in the wet, WeatherMaster WSC or iON FlexClimate?

Hankook iON FlexClimate, 92 vs 78 on our wet score.

Which grips better on dry roads, WeatherMaster WSC or iON FlexClimate?

Hankook iON FlexClimate, 93 vs 70 on our dry score.

Which is better in snow, WeatherMaster WSC or iON FlexClimate?

Hankook iON FlexClimate, 81 vs 70 on our snow score.

Which is more comfortable, WeatherMaster WSC or iON FlexClimate?

Hankook iON FlexClimate, 79 vs 67 on our comfort score.

Which lasts longer, WeatherMaster WSC or iON FlexClimate?

Hankook iON FlexClimate, 84 vs 71 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