Tests – · none yet Owners 69 · 17 reviews
Best test result: #8 of 8 in 2022 Consumer Reports Winter/Snow Truck/SUV Tires (overall ranking)
Head-to-head
Updated
Firestone Winterforce 2 UV vs Toyo Observe GSi-6 HP — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Observe GSi-6 HP leads, 71–69 Narrow edge
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Tests 69 · 2 tests Owners 75 · 14 reviews
Best test result: #12 of 20 in 2025 Studded, Friction and European Winter Tyre Test (overall ranking)
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
68
Dry
Observe GSi-6 HP +775Why this score
Source Winterforce 2 UV Observe GSi-6 HP Professional tests (TWG score) – 73 Reviews found online 68 79 -
72
Wet
Observe GSi-6 HP +375Why this score
Source Winterforce 2 UV Observe GSi-6 HP Professional tests (TWG score) – 71 Reviews found online 73 81 -
73
Snow
Winterforce 2 UV +766Why this score
Source Winterforce 2 UV Observe GSi-6 HP Professional tests (TWG score) – 60 Reviews found online 75 75 -
67
Comfort
Observe GSi-6 HP +1077Why this score
Source Winterforce 2 UV Observe GSi-6 HP Professional tests (TWG score) – 77 Reviews found online 64 77 -
64
Noise
Observe GSi-6 HP +670Why this score
Source Winterforce 2 UV Observe GSi-6 HP Professional tests (TWG score) – 72 Reviews found online 59 – -
64
Treadwear
Observe GSi-6 HP +165Why this score
Source Winterforce 2 UV Observe GSi-6 HP Reviews found online 63 65 -
69
Handling
Observe GSi-6 HP +877Why this score
Source Winterforce 2 UV Observe GSi-6 HP Reviews found online 69 77
Scores at a glance
| Category | Firestone Winterforce 2 UV | Toyo Observe GSi-6 HP |
|---|---|---|
| Relative Score | 69 | 71 |
| Dry | 68 | 75 |
| Wet | 72 | 75 |
| Snow | 73 | 66 |
| Comfort | 67 | 77 |
| Noise | 64 | 70 |
| Treadwear | 64 | 65 |
| Handling | 69 | 77 |
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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Recomputed
Headline score
69
/ 100
Winterforce 2 UV
71
/ 100
Observe GSi-6 HP
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 | Winterforce 2 UV | Observe GSi-6 HP | Δ | Both? |
|---|---|---|---|---|---|
| Overall Ranking | Overall | 0% #8/8 · 2022 Consumer Reports Winter/Snow Truck/SUV Tires | 8% #12/20 · 2025 Studded, Friction and European Winter Tyre Test | −8.3 | Different tests |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Winterforce 2 UV
Not enough owner reviews yet to extract themes.
Tire B Observe GSi-6 HP
Pros
- Exceptional traction and stability in snow and slush
- Impressive wet-weather performance and hydroplaning resistance
- Remarkably quiet ride quality for a winter tire
Cons
- Inconsistent tread life reports, with some users experiencing premature wear
- Occasional reports of structural failure or tread separation
- Slightly vague steering feel at lower speeds
Specs side by side
| Attribute | A · Firestone Winterforce 2 UV | B · Toyo Observe GSi-6 HP |
|---|---|---|
| Category | — | Winter |
| Vehicle type | SUV and 4x4 | — |
| Sizes available | 30 | 39 |
| Rim diameters | 15″ – 18″ | 16″ – 21″ |
| Tread depth | 12/32″ | 11 - 12/32″ |
| Sidewall | Blackwall | Black Side Wall |
| Max pressure | 44 psi | 50 - 51 psi |
Which one should you actually buy?
69
/ 100
Firestone Winterforce 2 UV
71
/ 100
Toyo Observe GSi-6 HP
Winner: Toyo Observe GSi-6 HP — better comfort, handling and dry. Pick the Firestone Winterforce 2 UV if snow matters most to you.
Pick tire B
You want the most comfortable ride
Toyo Observe GSi-6 HP scores 77 vs 67 on comfort.
Pick tire B
You enjoy sharp, responsive handling
Toyo Observe GSi-6 HP scores 77 vs 69 on handling.
Pick tire A
You drive through snowy winters
Firestone Winterforce 2 UV scores 73 vs 66 on snow.
Pick tire B
You want the most grip on dry roads
Toyo Observe GSi-6 HP scores 75 vs 68 on dry.
Tire A · Firestone Winterforce 2 UV
Tire B · Toyo Observe GSi-6 HP
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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.