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BFGoodrich All-Terrain T/A KO3 vs Cooper Discoverer Stronghold AT — 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 1 + 1 road tests and 200 + 7 owner reviews. How we score

Too close to call: All-Terrain T/A KO3 66, Discoverer Stronghold AT 65.

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BFGoodrich All-Terrain T/A KO3
Tire ABFGoodrich

All-Terrain T/A KO3

All-Terrain tire

± 9

Tests 56 · 1 test Owners 76 · 200 reviews

Best test result: #7 of 30 in 2026 Tire Rack All Terrain Tyre Snow Test (snow handling (tester's mark))

Cooper Discoverer Stronghold AT
Tire BCooper

Discoverer Stronghold AT

All-Terrain tire

± 8Provisional

Tests 62 · 1 test Owners 67 · 7 reviews

Best test result: #1 of 30 in 2026 Tire Rack All Terrain Tyre Snow Test (snow handling (tester's mark))

Category by category

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

  1. 62

    Dry

    Level
    62
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Stronghold AT
    Professional tests (TWG score) · 1 / 1 tests5460
    Reviews found online7565
    Dry Braking (% of best) · 1 shared test · wins 0–189%91%
    Dry Circle (% of best) · 1 shared test · wins 0–193%95%

    All-Terrain T/A KO3: 60% × 53.6 + 40% × 75 = 62

    Discoverer Stronghold AT: 60% × 59.7 + 40% × 65.3 = 62

  2. 63

    Wet

    Discoverer Stronghold AT +2
    65
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Stronghold AT
    Professional tests (TWG score) · 1 / 1 tests5462
    Reviews found online7670
    Wet Braking (% of best) · 1 shared test · wins 0–186%88%
    Wet Circle (% of best) · 1 shared test · wins 0–184%87%
    Wet Handling (% of best) · 1 shared test · wins 0–189%91%

    All-Terrain T/A KO3: 60% × 54.1 + 40% × 75.7 = 63

    Discoverer Stronghold AT: 60% × 62.2 + 40% × 70.2 = 65

  3. 66

    Snow

    Discoverer Stronghold AT +5
    71
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Stronghold AT
    Professional tests (TWG score) · 1 / 1 tests6077
    Reviews found online7662
    Ice Braking (% of best) · 1 shared test · wins 0–176%77%
    Ice Traction (% of best) · 1 shared test · wins 0–187%94%
    Snow Braking (% of best) · 1 shared test · wins 1–094%94%
    Snow Handling (% of best) · 1 shared test · wins 0–193%98%
    Snow Traction (% of best) · 1 shared test · wins 1–079%77%
    Snow Handling (tester's mark) (% of best) · 1 shared test · wins 0–188%100%

    All-Terrain T/A KO3: 60% × 59.6 + 40% × 75.5 = 66

    Discoverer Stronghold AT: 60% × 77.4 + 40% × 62.1 = 71

  4. 65

    Comfort

    All-Terrain T/A KO3 +9
    56
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Stronghold AT
    Professional tests (TWG score) · 1 / 1 tests6048
    Reviews found online6861
    Comfort (tester's mark) (% of best) · 1 shared test · wins 1–080%73%

    All-Terrain T/A KO3: 40% × 60.3 + 60% × 68 = 65

    Discoverer Stronghold AT: 40% × 48.2 + 60% × 60.9 = 56

  5. 63

    Noise

    All-Terrain T/A KO3 +6
    57
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Stronghold AT
    Professional tests (TWG score) · 1 / 1 tests6355
    Reviews found online6360
    Noise (tester's mark) (% of best) · 1 shared test · wins 1–077%70%

    All-Terrain T/A KO3: 60% × 62.5 + 40% × 62.6 = 63

    Discoverer Stronghold AT: 60% × 54.8 + 40% × 59.7 = 57

  6. 76

    Treadwear

    All-Terrain T/A KO3 +6
    70
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Stronghold AT
    Professional tests (TWG score)≈ 72 (est.)≈ 69 (est.)
    Reviews found online8272

    All-Terrain T/A KO3: 60% × 72.1 (est.) + 40% × 82.2 = 76

    Discoverer Stronghold AT: 60% × 68.6 (est.) + 40% × 72.2 = 70

    No road tests of treadwear for All-Terrain T/A KO3. 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 Discoverer Stronghold AT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 75

    Handling (owners)

    All-Terrain T/A KO3 +4
    71
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Stronghold AT
    Reviews found online7571
Scores at a glance
CategoryBFGoodrich All-Terrain T/A KO3Cooper Discoverer Stronghold AT
Relative Score 66 65
Dry 62 62
Wet 63 65
Snow 66 71
Comfort 65 56
Noise 63 57
Treadwear 76 70
Handling (owners) 75 71

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
Recomputed
Headline score
± 9

All-Terrain T/A KO3

± 8

Discoverer Stronghold AT

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.

In the overall rankings of 2 tests that ran both, BFGoodrich All-Terrain T/A KO3 finished ahead 1 times and Cooper Discoverer Stronghold AT 1 times.

DisciplineCategoryAll-Terrain T/A KO3Discoverer Stronghold ATΔHead-to-head
Dry Braking Dry 89% 91% −1.3 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Dry Circle Dry 93% 95% −1.4 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Wet Braking Wet 86% 88% −1.9 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Wet Circle Wet 84% 87% −3.3 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Wet Handling Wet 89% 91% −1.9 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Ice Braking Snow 76% 77% −1.4 0–1 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Ice Traction Snow 87% 94% −7.2 0–1 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Snow Braking Snow 94% 94% +0.2 1–0 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Snow Handling Snow 93% 98% −4.7 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Snow Handling (tester's mark) Snow 88% 100% −11.8 0–1 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Snow Traction Snow 79% 77% +1.6 1–0 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Comfort (tester's mark) Comfort 80% 73% +6.7 1–0 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Noise (tester's mark) Noise 77% 70% +6.7 1–0 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Also published by the testers (not in the score)
Road Rating (tester's mark) Other 100% 97% +3.3 1–0 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Overall Ranking Overall #7/30 #1/30 – 1–1 in 2 shared tests Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17

Pros, cons & observations

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

Tire A All-Terrain T/A KO3

Pros

  • Significantly quieter and more comfortable on-road ride compared to the KO2 and factory alternatives
  • Exceptional off-road grip on dirt, gravel, and rough forest service trails
  • Strong braking performance across various surfaces including snow and dirt

Cons

  • Consistent balancing and high road force issues reported by some users, leading to steering wheel wobble
  • Subpar ice traction, as is common for standard all-terrain tires not designated as dedicated winter options
  • Slower on-center steering response compared to competing light truck tires
All owner themes in the All-Terrain T/A KO3 review

Tire B Discoverer Stronghold AT

Pros

  • Exceptional traction in snow, ice, and winter conditions
  • Great capability for heavy-duty towing and plowing
  • Affordable pricing compared to premium alternatives like Nitto

Cons

  • Noticeable road noise at higher speeds for some users
  • Occasional reports of steering wander compared to older models like the AT3 XLT
All owner themes in the Discoverer Stronghold AT review

Specs side by side

Attribute A · BFGoodrich All-Terrain T/A KO3 B · Cooper Discoverer Stronghold AT
CategoryAll-Terrain tireAll-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available9227
Rim diameters15″ – 22″16″ – 20″
Tread depth15 - 16/32″16 - 17/32″
Treadwear warranty50,000 mi60,000 mi
SidewallBlack Side Wall - Raised White LetteringBlack Side Wall - Raised White Lettering
Max pressure35 - 80 psi65 - 80 psi
Sizes in common2727

Which one should you actually buy?

BFGoodrich All-Terrain T/A KO3

Cooper Discoverer Stronghold AT

Too close to call: BFGoodrich All-Terrain T/A KO3 and Cooper Discoverer Stronghold AT are within 2 points overall. BFGoodrich All-Terrain T/A KO3 is stronger on comfort, noise and treadwear. Cooper Discoverer Stronghold AT is stronger on snow. Cooper Discoverer Stronghold AT rests on little evidence so far (1 test, 7 reviews), so read this result as provisional.

Pick tire A You want the most comfortable ride

BFGoodrich All-Terrain T/A KO3 scores 65 vs 56 on comfort.

Pick tire A You want a quieter cabin

BFGoodrich All-Terrain T/A KO3 scores 63 vs 57 on noise.

Pick tire A You want the longest tread life

BFGoodrich All-Terrain T/A KO3 scores 76 vs 70 on treadwear.

Pick tire B You drive through snowy winters

Cooper Discoverer Stronghold AT scores 71 vs 66 on snow.

Tire A · BFGoodrich All-Terrain T/A KO3
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Tire B · Cooper Discoverer Stronghold AT
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All-Terrain T/A KO3 or Discoverer Stronghold AT?

Which is better in the wet, All-Terrain T/A KO3 or Discoverer Stronghold AT?

Neither, by our numbers: 63 vs 65 on the wet score, within 3 points.

Which grips better on dry roads, All-Terrain T/A KO3 or Discoverer Stronghold AT?

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

Which is better in snow, All-Terrain T/A KO3 or Discoverer Stronghold AT?

Cooper Discoverer Stronghold AT, 71 vs 66 on our snow score.

Which is quieter, All-Terrain T/A KO3 or Discoverer Stronghold AT?

BFGoodrich All-Terrain T/A KO3, 63 vs 57 on our noise score.

Which is more comfortable, All-Terrain T/A KO3 or Discoverer Stronghold AT?

BFGoodrich All-Terrain T/A KO3, 65 vs 56 on our comfort score.

Which lasts longer, All-Terrain T/A KO3 or Discoverer Stronghold AT?

BFGoodrich All-Terrain T/A KO3, 76 vs 70 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