Head-to-head Updated

Toyo Observe GSi-6 HP vs BFGoodrich All-Terrain T/A KO2 — 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 2 + 0 road tests and 14 + 1,575 owner reviews. How we score

Too close to call: Observe GSi-6 HP and All-Terrain T/A KO2 are level at 72.

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Toyo Observe GSi-6 HP
Tire AToyo

Observe GSi-6 HP

Winter

± 6

Tests 69 · 2 tests Owners 73 · 14 reviews

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

BFGoodrich All-Terrain T/A KO2

All-Terrain T/A KO2

All-Terrain tire

± 7

Tests – · none yet Owners 74 · 1,575 reviews

“I like mine so much I'm on my second set. I got 55k out of my first set (could have got another 10k but started to get a little noisy). Exact tire you have (265/70-17 C load) on a 2018 4Runner.”

Category by category

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

  1. 75

    Dry

    Observe GSi-6 HP +2
    73
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Professional tests (TWG score) · 1 / – tests73≈ 71 (est.)
    Reviews found online7775

    Observe GSi-6 HP: 60% × 73 + 40% × 77.4 = 75

    All-Terrain T/A KO2: 60% × 71.1 (est.) + 40% × 75.3 = 73

    No road tests of dry for All-Terrain T/A KO2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 75

    Wet

    Observe GSi-6 HP +3
    72
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Professional tests (TWG score) · 2 / – tests71≈ 71 (est.)
    Reviews found online8172

    Observe GSi-6 HP: 60% × 71.2 + 40% × 81 = 75

    All-Terrain T/A KO2: 60% × 71.4 (est.) + 40% × 72 = 72

    No road tests of wet for All-Terrain T/A KO2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 66

    Snow

    All-Terrain T/A KO2 +9
    75
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Professional tests (TWG score) · 2 / – tests60≈ 73 (est.)
    Reviews found online7577

    Observe GSi-6 HP: 60% × 59.7 + 40% × 75.2 = 66

    All-Terrain T/A KO2: 60% × 73.2 (est.) + 40% × 77.2 = 75

    No road tests of snow for All-Terrain T/A KO2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).

  4. 76

    Comfort

    Observe GSi-6 HP +6
    70
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Professional tests (TWG score) · 1 / – tests78≈ 69 (est.)
    Reviews found online7471

    Observe GSi-6 HP: 40% × 77.5 + 60% × 74.4 = 76

    All-Terrain T/A KO2: 40% × 69.5 (est.) + 60% × 71 = 70

    No road tests of comfort for All-Terrain T/A KO2. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 70

    Noise

    Observe GSi-6 HP +1
    69
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Professional tests (TWG score) · 1 / – tests72≈ 67 (est.)
    Reviews found online≈ 67 (est.)73

    Observe GSi-6 HP: 60% × 71.7 + 40% × 66.6 (est.) = 70

    All-Terrain T/A KO2: 60% × 66.6 (est.) + 40% × 72.6 = 69

    No owner ratings of noise for Observe GSi-6 HP. The owner half is the owners’ average (67): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

    No road tests of noise for All-Terrain T/A KO2. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 61

    Treadwear

    All-Terrain T/A KO2 +12
    73
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Professional tests (TWG score)≈ 63 (est.)≈ 70 (est.)
    Reviews found online5877

    Observe GSi-6 HP: 60% × 63.4 (est.) + 40% × 58.3 = 61

    All-Terrain T/A KO2: 60% × 69.9 (est.) + 40% × 77.1 = 73

    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 0.35).

    No road tests of treadwear for All-Terrain T/A KO2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).

  7. 76

    Handling (owners)

    Observe GSi-6 HP +7
    69
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Reviews found online7669
  8. 66

    Efficiency

    No comparison
    –
    Why this score
    SourceObserve GSi-6 HPAll-Terrain T/A KO2
    Professional tests (TWG score) · 1 / – tests66–
Scores at a glance
Toyo Observe GSi-6 HP vs BFGoodrich All-Terrain T/A KO2: scores by category (0–100)
CategoryToyo Observe GSi-6 HPBFGoodrich All-Terrain T/A KO2
Relative Score 72 72
Dry 75 73
Wet 75 72
Snow 66 75
Comfort 76 70
Noise 70 69
Treadwear 61 73
Handling (owners) 76 69
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
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
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
± 6

Observe GSi-6 HP

± 7

All-Terrain T/A KO2

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.

DisciplineCategoryObserve GSi-6 HPAll-Terrain T/A KO2ΔHead-to-head
Dry Braking Dry 97% #5/20 · 2020 Nordic and Studded Winter Tyre Test 95% #6/7 · Best All Terrain Tyres Tested On Road, Off Road and Snow [2024] – Different tests
Straight Aquaplaning Wet 83% #9/20 · 2025 Studded, Friction and European Winter Tyre Test 87% #5/7 · Best All Terrain Tyres Tested On Road, Off Road and Snow [2024] – Different tests
Wet Braking Wet 81% #7/20 · 2020 Nordic and Studded Winter Tyre Test 71% #6/7 · Best All Terrain Tyres Tested On Road, Off Road and Snow [2024] – Different tests
Wet Handling Wet 97% #8/20 · 2020 Nordic and Studded Winter Tyre Test 90% #6/7 · Best All Terrain Tyres Tested On Road, Off Road and Snow [2024] – Different tests
Snow Braking Snow 99% #8/20 · 2020 Nordic and Studded Winter Tyre Test 100% #1/5 · Best All Terrain Tyres Tested On Road, Off Road and Snow [2024] – Different tests
Snow Handling Snow 98% #12/20 · 2020 Nordic and Studded Winter Tyre Test 100% #1/5 · Best All Terrain Tyres Tested On Road, Off Road and Snow [2024] – Different tests
Snow Traction Snow 95% #16/20 · 2020 Nordic and Studded Winter Tyre Test 96% #3/5 · Best All Terrain Tyres Tested On Road, Off Road and Snow [2024] – Different tests
Also published by the testers (not in the score)
Overall Ranking Overall #12/20 2025 Studded, Friction and European Winter Tyre Test #6/5 2025 Wybór Kierowców Off Road Tire Test R18 – Different tests

Pros, cons & observations

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

Tire A 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

Tire B All-Terrain T/A KO2

Pros

  • Exceptional off-road traction and puncture resistance on rocks, gravel, and dirt
  • Aggressive, rugged aesthetics that enhance the look of trucks and SUVs
  • Impressive tread longevity and high mileage capabilities

Cons

  • Reduced grip and slippery performance in wet conditions, rain, and standing water
  • Rubber tends to harden over time, negatively impacting cold-weather and ice traction
  • Higher price point compared to some competitors
All owner themes in the All-Terrain T/A KO2 review

What real owners are saying

From Reddit, forums and review threads. Not part of our score

Tire A

Toyo Observe GSi-6 HP

We haven't collected enough community discussion about this tire yet.

Tire B

BFGoodrich All-Terrain T/A KO2

Positive

Community sentiment toward the BFGoodrich All-Terrain T/A KO2 is largely positive, with drivers frequently praising its aggressive styling, tough sidewalls, off-road durability, and solid general performance. Many owners report capable handling in snow, though several emphasize that it cannot replace a dedicated winter tire and can struggle on ice or packed snow. Criticisms center on high pricing, added weight hurting fuel economy, mud packing, occasional tread chunking, and difficulties with balancing causing highway vibrations.

bobistheoilguy.com ·2021-11-30

“I like mine so much I'm on my second set. I got 55k out of my first set (could have got another 10k but started to get a little noisy). Exact tire you have (265/70-17 C load) on a 2018 4Runner.”

subaruoutback.org ·6 upvotes ·2022-09-17

“No opinion here between the Yokohamas or Falkens (both of which I would definitely put on my Outback ) but in my experience the BFG KOs are way too much tire for the Outback . I put a set of 4 on my 2013 Outback and quickly discovered that other than looking great, and being virtually bulletproof, everything else about them is a downside. Rough ride, lot of road noise, lost about 2 mpg in fuel cost, and very heavy when I did my tire rotations, which BFG says you should do every 3,000 miles to prevent excess wear. Like they say about many things, the two happiest days in my 2013 Outback ’s life were the day I put the KO2s on, and the day, after about 10,000 miles, I replaced them with “regular” tires . Great tires for a heavier vehicle, but too much for the relatively light Outback . I’ve read many Outback owner’s reviews being very happy with the Wildpeaks AND Geolanders. Sounds like that person has an agenda.”

r/Crosstrek ·5 upvotes ·2022-02-09

“BFGoodrich KO2s are an excellent choice That is all. We got whacked with that big winter weather system here in Michigan last week. My '21 Sport is fitted with 235/75R15 KO2s and I finally got a feel for their cold/snow/ice performance characteristics. My opinion is favorable. They were good enough in 5-6" of loose powder, felt planted in melty slush, but mostly impressed me on glazed ice. Didn't encounter any hardpack snow, so can't really comment on how they'll do with that, but I expect they'll perform well on that surface also. I've been running at 38 psi, seems to work okay. Road noise is minimal. Fuel economy took a giant hit, though. I have no empirical measurements to back my observations, but it appears I've taken about an 8 MPG penalty. It only gets worse with speed, too. Highway miles eat even more gas than regular surface streets. Makes sense, given the nature of these tires. To be fair, however, I knew this would happen and accept the loss. For me and my goals with my Crosstrek build, the fuel economy loss is made up for with the improved grip under any road surface I've thrown at it yet. Just wanted to share my experience so far. I'm not disappointed. Read more”

Top themes
#aggressive look#winter and snow traction#sidewall durability#balancing and vibrations#road noise levels#fuel economy impact#tread wear life

Based on 395 community posts

Specs side by side

Attribute A · Toyo Observe GSi-6 HP B · BFGoodrich All-Terrain T/A KO2
CategoryWinterAll-Terrain tire
Vehicle type—SUV and 4x4
Sizes available3949
Rim diameters16″ – 21″15″ – 20″
Tread depth11 - 12/32″13 - 15/32″
Treadwear warranty—50,000 mi
SidewallBlack Side WallBlack Side Wall - Raised White Lettering
Max pressure50 - 51 psi35 - 80 psi
Sizes in common00

Which one should you actually buy?

Toyo Observe GSi-6 HP

BFGoodrich All-Terrain T/A KO2

Too close to call: Toyo Observe GSi-6 HP and BFGoodrich All-Terrain T/A KO2 are within 2 points overall. Toyo Observe GSi-6 HP is stronger on handling, comfort and wet. BFGoodrich All-Terrain T/A KO2 is stronger on treadwear and snow.

Pick tire B You want the longest tread life

BFGoodrich All-Terrain T/A KO2 scores 73 vs 61 on treadwear.

Pick tire B You drive through snowy winters

BFGoodrich All-Terrain T/A KO2 scores 75 vs 66 on snow.

Pick tire A You enjoy sharp, responsive handling

Toyo Observe GSi-6 HP scores 76 vs 69 on handling.

Pick tire A You want the most comfortable ride

Toyo Observe GSi-6 HP scores 76 vs 70 on comfort.

Tire A · Toyo Observe GSi-6 HP
Tire B · BFGoodrich All-Terrain T/A KO2

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Observe GSi-6 HP or All-Terrain T/A KO2?

Which is better in the wet, Observe GSi-6 HP or All-Terrain T/A KO2?

Toyo Observe GSi-6 HP, 75 vs 72 on our wet score.

Which grips better on dry roads, Observe GSi-6 HP or All-Terrain T/A KO2?

Neither, by our numbers: 75 vs 73 on the dry score, within 3 points.

Which is better in snow, Observe GSi-6 HP or All-Terrain T/A KO2?

BFGoodrich All-Terrain T/A KO2, 75 vs 66 on our snow score.

Which is quieter, Observe GSi-6 HP or All-Terrain T/A KO2?

Neither, by our numbers: 70 vs 69 on the noise score, within 3 points.

Which is more comfortable, Observe GSi-6 HP or All-Terrain T/A KO2?

Toyo Observe GSi-6 HP, 76 vs 70 on our comfort score.

Which lasts longer, Observe GSi-6 HP or All-Terrain T/A KO2?

BFGoodrich All-Terrain T/A KO2, 73 vs 61 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