tirewheelguide
Head-to-head Updated

Firestone Winterforce 2 UV vs Toyo Observe GSi-6 HP — 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 + 2 road tests and 17 + 14 owner reviews. How we score

Observe GSi-6 HP leads, 71–67 Narrow edge

Check price on Amazon · Observe GSi-6 HP or Winterforce 2 UV on Amazon
Add your size for an exact match
/R

Both Amazon links then search this exact size.

TireWheelGuide may earn a commission from purchases made through these links.

Toyo Observe GSi-6 HP
Tire BToyo

Observe GSi-6 HP

Winter

± 7

Tests 69 · 2 tests Owners 73 · 14 reviews

Best test result: #5 of 20 in 2020 Nordic and Studded Winter Tyre Test (dry braking)

Category by category

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

  1. 65

    Dry

    Observe GSi-6 HP +10
    75
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Professional tests (TWG score) · – / 1 tests≈ 66 (est.)73
    Reviews found online6477

    Winterforce 2 UV: 60% × 66.1 (est.) + 40% × 63.5 = 65

    Observe GSi-6 HP: 60% × 73 + 40% × 76.9 = 75

    No road tests of dry for Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 70

    Wet

    Observe GSi-6 HP +5
    75
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Professional tests (TWG score) · – / 2 tests≈ 70 (est.)71
    Reviews found online7081

    Winterforce 2 UV: 60% × 70.3 (est.) + 40% × 70 = 70

    Observe GSi-6 HP: 60% × 71.5 + 40% × 80.7 = 75

    No road tests of wet for Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 72

    Snow

    Winterforce 2 UV +6
    66
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Professional tests (TWG score) · – / 2 tests≈ 71 (est.)60
    Reviews found online7375

    Winterforce 2 UV: 60% × 71.3 (est.) + 40% × 72.9 = 72

    Observe GSi-6 HP: 60% × 59.5 + 40% × 74.7 = 66

    No road tests of snow for Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 61

    Comfort

    Observe GSi-6 HP +14
    75
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Professional tests (TWG score) · – / 1 tests≈ 66 (est.)77
    Reviews found online5774

    Winterforce 2 UV: 40% × 66.3 (est.) + 60% × 57 = 61

    Observe GSi-6 HP: 40% × 76.6 + 60% × 73.8 = 75

    No road tests of comfort for Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 61

    Noise

    Observe GSi-6 HP +8
    69
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Professional tests (TWG score) · – / 1 tests≈ 66 (est.)72
    Reviews found online54≈ 66 (est.)

    Winterforce 2 UV: 60% × 66.3 (est.) + 40% × 53.8 = 61

    Observe GSi-6 HP: 60% × 71.6 + 40% × 66.3 (est.) = 69

    No road tests of noise for Winterforce 2 UV. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

    No owner ratings of noise for Observe GSi-6 HP. 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. 62

    Treadwear

    Level
    62
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Professional tests (TWG score)≈ 64 (est.)≈ 64 (est.)
    Reviews found online5959

    Winterforce 2 UV: 60% × 63.7 (est.) + 40% × 58.7 = 62

    Observe GSi-6 HP: 60% × 63.7 (est.) + 40% × 58.5 = 62

    No road tests of treadwear for Winterforce 2 UV. 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 Observe GSi-6 HP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. –

    Handling (owners)

    No comparison
    75
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Reviews found online–75
  8. –

    Efficiency

    No comparison
    66
    Why this score
    SourceWinterforce 2 UVObserve GSi-6 HP
    Professional tests (TWG score) · – / 1 tests–66
Scores at a glance
CategoryFirestone Winterforce 2 UVToyo Observe GSi-6 HP
Relative Score 67 71
Dry 65 75
Wet 70 75
Snow 72 66
Comfort 61 75
Noise 61 69
Treadwear 62 62
Handling (owners) – 75
Efficiency – 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
Important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost

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

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

Winterforce 2 UV

± 7

Observe GSi-6 HP

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.

DisciplineCategoryWinterforce 2 UVObserve GSi-6 HPΔHead-to-head
Also published by the testers (not in the score)
Overall Ranking Overall #8/8 2022 Consumer Reports Winter/Snow Truck/SUV Tires #12/20 2025 Studded, Friction and European Winter Tyre Test – Different tests

Pros, cons & observations

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

Tire A Winterforce 2 UV

Pros

  • Strong snow traction: one 4WD owner reported no slipping in 8 inches of snow, and an Explorer owner said it never needed 4x4 after 47 inches of snow in a week
  • Good value for the money: reviewers repeatedly describe it as a great winter tire for the price, and one calls it the best balance of price and longevity
  • Good wet-weather performance reported by some, including no hydroplaning on puddles and 'great all around' traction

Cons

  • Increased road noise is mentioned by some reviewers, attributed to the aggressive winter tread, though others describe noise as very low
  • Reduced wet-weather starting traction: one reviewer reports wheelspin when pulling away from a red light in the rain
  • Fast wear if used in warm weather: one reviewer who ran them in summer notes this is not recommended and that they wear quickly
All owner themes in the Winterforce 2 UV review

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
All owner themes in the Observe GSi-6 HP review

Specs side by side

Attribute A · Firestone Winterforce 2 UV B · Toyo Observe GSi-6 HP
CategoryWinterWinter
Vehicle typeSUV and 4x4—
Sizes available3039
Rim diameters15″ – 18″16″ – 21″
Tread depth12/32″11 - 12/32″
SidewallBlackwallBlack Side Wall
Max pressure44 psi50 - 51 psi
Sizes in common00

Which one should you actually buy?

Firestone Winterforce 2 UV

Toyo Observe GSi-6 HP

Narrow edge: Toyo Observe GSi-6 HP — better comfort, dry and noise. Pick the Firestone Winterforce 2 UV if snow matters most to you. Firestone Winterforce 2 UV rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional.

Pick tire B You want the most comfortable ride

Toyo Observe GSi-6 HP scores 75 vs 61 on comfort.

Pick tire B You want the most grip on dry roads

Toyo Observe GSi-6 HP scores 75 vs 65 on dry.

Pick tire B You want a quieter cabin

Toyo Observe GSi-6 HP scores 69 vs 61 on noise.

Pick tire A You drive through snowy winters

Firestone Winterforce 2 UV scores 72 vs 66 on snow.

Tire A · Firestone Winterforce 2 UV
Check price on Amazon
Tire B · Toyo Observe GSi-6 HP
Check price on Amazon

TireWheelGuide may earn a commission from purchases made through these links.

Winterforce 2 UV or Observe GSi-6 HP?

Which is better in the wet, Winterforce 2 UV or Observe GSi-6 HP?

Toyo Observe GSi-6 HP, 75 vs 70 on our wet score.

Which grips better on dry roads, Winterforce 2 UV or Observe GSi-6 HP?

Toyo Observe GSi-6 HP, 75 vs 65 on our dry score.

Which is better in snow, Winterforce 2 UV or Observe GSi-6 HP?

Firestone Winterforce 2 UV, 72 vs 66 on our snow score.

Which is quieter, Winterforce 2 UV or Observe GSi-6 HP?

Toyo Observe GSi-6 HP, 69 vs 61 on our noise score.

Which is more comfortable, Winterforce 2 UV or Observe GSi-6 HP?

Toyo Observe GSi-6 HP, 75 vs 61 on our comfort score.

Which lasts longer, Winterforce 2 UV or Observe GSi-6 HP?

Neither, by our numbers: 62 vs 62 on the treadwear score, within 3 points.

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