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BFGoodrich All-Terrain T/A KO3 vs Cooper Discoverer Rugged Trek — 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 198 + 172 owner reviews. How we score

Discoverer Rugged Trek is ahead, 71–66

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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 75 · 198 reviews

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

Cooper Discoverer Rugged Trek
Tire BCooper

Discoverer Rugged Trek

All-Terrain tire

± 8

Tests 65 · 1 test Owners 77 · 172 reviews

Best test result: #3 of 12 in 2024 Tire Rack All Terrain Tyres On-Road Test (dry circle)

Category by category

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

  1. 62

    Dry

    Discoverer Rugged Trek +10
    72
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Rugged Trek
    Professional tests (TWG score) · 1 / 1 tests5466
    Reviews found online7581
    Dry Braking (% of best) · 1 shared test · wins 0–189%92%
    Dry Circle (% of best) · 1 shared test · wins 0–193%97%

    All-Terrain T/A KO3: 60% × 53.6 + 40% × 74.8 = 62

    Discoverer Rugged Trek: 60% × 66 + 40% × 80.7 = 72

  2. 63

    Wet

    Discoverer Rugged Trek +4
    67
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Rugged Trek
    Professional tests (TWG score) · 1 / 1 tests5458
    Reviews found online7679
    Wet Braking (% of best) · 1 shared test · wins 1–086%83%
    Wet Circle (% of best) · 1 shared test · wins 0–184%87%
    Wet Handling (% of best) · 1 shared test · wins 0–189%92%

    All-Terrain T/A KO3: 60% × 54.2 + 40% × 75.5 = 63

    Discoverer Rugged Trek: 60% × 58.3 + 40% × 79.4 = 67

  3. 66

    Snow

    Discoverer Rugged Trek +10
    76
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Rugged Trek
    Professional tests (TWG score) · 1 / 1 tests6076
    Reviews found online7576
    Ice Braking (% of best) · 1 shared test · wins 0–176%80%
    Ice Traction (% of best) · 1 shared test · wins 0–187%90%
    Snow Braking (% of best) · 1 shared test · wins 1–094%86%
    Snow Handling (% of best) · 1 shared test · wins 0–193%97%
    Snow Traction (% of best) · 1 shared test · wins 0–179%81%
    Snow Handling (tester's mark) (% of best) · 1 shared test · wins 1–088%85%

    All-Terrain T/A KO3: 60% × 59.6 + 40% × 75.3 = 66

    Discoverer Rugged Trek: 60% × 75.8 + 40% × 75.5 = 76

  4. 65

    Comfort

    Discoverer Rugged Trek +5
    70
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Rugged Trek
    Professional tests (TWG score) · 1 / 1 tests6071
    Reviews found online6870
    Comfort (tester's mark) (% of best) · 1 shared test · wins 0–180%87%

    All-Terrain T/A KO3: 40% × 60.5 + 60% × 67.9 = 65

    Discoverer Rugged Trek: 40% × 70.7 + 60% × 70.2 = 70

  5. 63

    Noise

    All-Terrain T/A KO3 +5
    58
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Rugged Trek
    Professional tests (TWG score) · 1 / 1 tests6359
    Reviews found online6358
    Noise (tester's mark) (% of best) · 1 shared test · wins 1–077%73%

    All-Terrain T/A KO3: 60% × 62.6 + 40% × 62.7 = 63

    Discoverer Rugged Trek: 60% × 58.9 + 40% × 57.6 = 58

  6. 76

    Treadwear

    Discoverer Rugged Trek +1
    77
    Why this score
    SourceAll-Terrain T/A KO3Discoverer Rugged Trek
    Professional tests (TWG score)≈ 72 (est.)≈ 72 (est.)
    Reviews found online8283

    All-Terrain T/A KO3: 60% × 72.2 (est.) + 40% × 82.2 = 76

    Discoverer Rugged Trek: 60% × 72.5 (est.) + 40% × 82.9 = 77

    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 Rugged Trek. 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 Rugged Trek
    Reviews found online7571
Scores at a glance
CategoryBFGoodrich All-Terrain T/A KO3Cooper Discoverer Rugged Trek
Relative Score 66 71
Dry 62 72
Wet 63 67
Snow 66 76
Comfort 65 70
Noise 63 58
Treadwear 76 77
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 Rugged Trek

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 Rugged Trek 1 times.

DisciplineCategoryAll-Terrain T/A KO3Discoverer Rugged TrekΔHead-to-head
Dry Braking Dry 89% 92% −2.7 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Dry Circle Dry 93% 97% −4.1 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Wet Braking Wet 86% 83% +3.2 1–0 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% 92% −2.6 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Ice Braking Snow 76% 80% −4.2 0–1 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Ice Traction Snow 87% 90% −3.3 0–1 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Snow Braking Snow 94% 86% +8.0 1–0 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Snow Handling Snow 93% 97% −4.1 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% 85% +3.0 1–0 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Snow Traction Snow 79% 81% −2.4 0–1 in 1 shared test Newest: 2026 Tire Rack All Terrain Tyre Snow Test · 265/70 R17
Comfort (tester's mark) Comfort 80% 87% −6.7 0–1 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Noise (tester's mark) Noise 77% 73% +3.4 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% 93% +6.7 1–0 in 1 shared test Newest: 2024 Tire Rack All Terrain Tyres On-Road Test · 265/70 R17
Overall Ranking Overall #7/30 #9/30 – 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 Rugged Trek

Pros

  • Aggressive and appealing tread design that looks like a hybrid between an all-terrain and mud-terrain tire
  • Surprisingly low road noise for such an aggressive tread pattern
  • Strong off-road traction in mud, sand, dirt roads, and rocky terrain

Cons

  • Slight decrease in fuel economy (typically a 1 to 4 MPG drop)
  • Some road noise and humming that can increase as the tires wear down
  • Limited ice traction compared to dedicated winter tires
All owner themes in the Discoverer Rugged Trek review

Specs side by side

Attribute A · BFGoodrich All-Terrain T/A KO3 B · Cooper Discoverer Rugged Trek
CategoryAll-Terrain tireAll-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available9221
Rim diameters15″ – 22″16″ – 22″
Tread depth15 - 16/32″16 - 19/32″
UTQG—600 A B
Treadwear warranty50,000 mi—
SidewallBlack Side Wall - Raised White LetteringRaised Black Lettering - Serrated Black Lettering
Max pressure35 - 80 psi44 - 80 psi
Sizes in common1919

Which one should you actually buy?

BFGoodrich All-Terrain T/A KO3

Cooper Discoverer Rugged Trek

Winner: Cooper Discoverer Rugged Trek — better dry, snow and comfort. Pick the BFGoodrich All-Terrain T/A KO3 if noise matters most to you.

Pick tire B You want the most grip on dry roads

Cooper Discoverer Rugged Trek scores 72 vs 62 on dry.

Pick tire B You drive through snowy winters

Cooper Discoverer Rugged Trek scores 76 vs 66 on snow.

Pick tire A You want a quieter cabin

BFGoodrich All-Terrain T/A KO3 scores 63 vs 58 on noise.

Pick tire B You want the most comfortable ride

Cooper Discoverer Rugged Trek scores 70 vs 65 on comfort.

Tire A · BFGoodrich All-Terrain T/A KO3
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Tire B · Cooper Discoverer Rugged Trek
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All-Terrain T/A KO3 or Discoverer Rugged Trek?

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

Cooper Discoverer Rugged Trek, 67 vs 63 on our wet score.

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

Cooper Discoverer Rugged Trek, 72 vs 62 on our dry score.

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

Cooper Discoverer Rugged Trek, 76 vs 66 on our snow score.

Which is quieter, All-Terrain T/A KO3 or Discoverer Rugged Trek?

BFGoodrich All-Terrain T/A KO3, 63 vs 58 on our noise score.

Which is more comfortable, All-Terrain T/A KO3 or Discoverer Rugged Trek?

Cooper Discoverer Rugged Trek, 70 vs 65 on our comfort score.

Which lasts longer, All-Terrain T/A KO3 or Discoverer Rugged Trek?

Neither, by our numbers: 76 vs 77 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