Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.
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Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.
| Source | Observe GSi-6 HP | iceGUARD iG30 |
|---|---|---|
| Professional tests (TWG score) | 88 | – |
| Tyre Reviews owners | 89 | 75 |
| Source | Observe GSi-6 HP | iceGUARD iG30 |
|---|---|---|
| Professional tests (TWG score) | 68 | – |
| Tyre Reviews owners | 88 | 75 |
| Source | Observe GSi-6 HP | iceGUARD iG30 |
|---|---|---|
| Professional tests (TWG score) | 81 | – |
| Tyre Reviews owners | 88 | – |
| Source | Observe GSi-6 HP | iceGUARD iG30 |
|---|---|---|
| Tyre Reviews owners | 85 | 60 |
| Source | Observe GSi-6 HP | iceGUARD iG30 |
|---|---|---|
| Tyre Reviews owners | 65 | 50 |
| Source | Observe GSi-6 HP | iceGUARD iG30 |
|---|---|---|
| Tyre Reviews owners | 82 | 65 |
| Category | Toyo Observe GSi-6 HP | Yokohama iceGUARD iG30 |
|---|---|---|
| Relative Score | 77 | 64 |
| Dry | 89 | 75 |
| Wet | 76 | 75 |
| Snow | 84 | – |
| Comfort | 85 | 60 |
| Treadwear | 65 | 50 |
| Handling | 82 | 65 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Tire A
Tire B
Only categories both tires have data for count toward the headline score.
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
The Toyo Observe GSI 6 HP is widely regarded as a high-performance winter tire that excels in wet, slushy, and snowy conditions while maintaining impressive dry-road handling. Users frequently praise its quiet operation and exceptional lateral stability, though experiences regarding tread longevity are polarized, with some reporting high mileage and others noting premature wear.
The Yokohama iceGUARD iG30 receives a highly critical assessment from the user, who reports poor performance across all road conditions and premature tread wear after only one season of light use. The reviewer expresses significant dissatisfaction, citing a complete lack of confidence in the tire's safety and reliability.
| Attribute | A · Toyo Observe GSi-6 HP | B · Yokohama iceGUARD iG30 |
|---|---|---|
| Category | — | Winter Touring tires |
| Vehicle type | — | Passenger Car / Crossover |
Toyo
Yokohama
Winner: Toyo Observe GSi-6 HP — better comfort, handling and treadwear. It leads or ties in every category we score.
Toyo Observe GSi-6 HP scores 85 vs 60 on comfort.
Toyo Observe GSi-6 HP scores 82 vs 65 on handling.
Toyo Observe GSi-6 HP scores 65 vs 50 on treadwear.
Toyo Observe GSi-6 HP scores 89 vs 75 on dry.
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.
Community buzz from Reddit and forums is shown for context only — it never changes the score.
