Tests 86 · 3 tests Owners 80 · 11 reviews
Best test result: #1 of 3 in 2025 Autobild EV All Season Mini-Test (dry braking)
Head-to-head
Updated
Hankook iON FlexClimate vs Cooper WeatherMaster WSC — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
iON FlexClimate is ahead, 83–72
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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)
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
89
Dry
iON FlexClimate +1970Why this score
Source iON FlexClimate WeatherMaster WSC Professional tests (TWG score) 96 69 Reviews found online 79 72 Dry Braking (% of best) 100% 97% -
89
Wet
iON FlexClimate +1277Why this score
Source iON FlexClimate WeatherMaster WSC Professional tests (TWG score) 93 77 Reviews found online 82 78 Wet Braking (% of best) 100% 96% -
79
Snow
iON FlexClimate +871Why this score
Source iON FlexClimate WeatherMaster WSC Professional tests (TWG score) 81 67 Reviews found online 77 77 Snow Braking (% of best) 99% 98% -
74
Comfort
iON FlexClimate +569Why this score
Source iON FlexClimate WeatherMaster WSC Professional tests (TWG score) 71 – Reviews found online 79 69 -
72
Noise
No comparison–Why this score
Source iON FlexClimate WeatherMaster WSC Professional tests (TWG score) 76 – -
79
Treadwear
iON FlexClimate +970Why this score
Source iON FlexClimate WeatherMaster WSC Professional tests (TWG score) 79 – Reviews found online 80 73 -
81
Handling
iON FlexClimate +972Why this score
Source iON FlexClimate WeatherMaster WSC Reviews found online 81 72
Scores at a glance
| Category | Hankook iON FlexClimate | Cooper WeatherMaster WSC |
|---|---|---|
| Relative Score | 83 | 72 |
| Dry | 89 | 70 |
| Wet | 89 | 77 |
| Snow | 79 | 71 |
| Comfort | 74 | 69 |
| Noise | 72 | – |
| Treadwear | 79 | 70 |
| Handling | 81 | 72 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
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Neither tire has a score here yet, so this weight changes nothing.
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Neutral
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Recomputed
Headline score
83
/ 100
iON FlexClimate
72
/ 100
WeatherMaster WSC
Only categories both tires have data for count toward the headline score.
The professional test results behind the scores
Each result is shown as % of the best tire in that test. “Same test” rows are the strictest comparison: both tires were measured side by side.
| Discipline | Category | iON FlexClimate | WeatherMaster WSC | Δ | Both? |
|---|---|---|---|---|---|
| Dry Braking | Dry | 100% #1/3 · 2025 Autobild EV All Season Mini-Test | 97% #6/10 · 2017 Autocenter Studded Winter Tyre Test | +2.5 | Different tests |
| Overall Ranking | Overall | 100% #1/3 · 2025 Autobild EV All Season Mini-Test | 0% #11/9 · 2018 Autofil Studdable Winter Tire Test R16 | +100.0 | Different tests |
| Snow Braking | Snow | 99% #4/8 · 2026 AutoBild All Season Tyre Test for EVs (215/55 R18) | 98% #5/10 · 2017 Autocenter Studded Winter Tyre Test | +1.1 | Different tests |
| Wet Braking | Wet | 100% #1/5 · 2025 TUV Hankook iON FlexClimate EV Report | 96% #2/10 · 2017 Autocenter Studded Winter Tyre Test | +3.7 | Different tests |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A 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
Tire B 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
Specs side by side
| Attribute | A · Hankook iON FlexClimate | B · Cooper WeatherMaster WSC |
|---|---|---|
| Category | All Season | Winter |
| Vehicle type | Passenger Car / Crossover | SUV and 4x4 |
| Sizes available | 15 | — |
| Rim diameters | 18″ – 20″ | — |
Which one should you actually buy?
83
/ 100
Hankook iON FlexClimate
72
/ 100
Cooper WeatherMaster WSC
Winner: Hankook iON FlexClimate — better dry, wet and treadwear. It leads or ties in every category we score.
Pick tire A
You want the most grip on dry roads
Hankook iON FlexClimate scores 89 vs 70 on dry.
Pick tire A
Your priority is wet-weather safety
Hankook iON FlexClimate scores 89 vs 77 on wet.
Pick tire A
You want the longest tread life
Hankook iON FlexClimate scores 79 vs 70 on treadwear.
Pick tire A
You enjoy sharp, responsive handling
Hankook iON FlexClimate scores 81 vs 72 on handling.
Tire A · Hankook iON FlexClimate
Tire B · Cooper WeatherMaster WSC
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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.
Community buzz from Reddit and forums is shown for context only — it never changes the score.