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BFGoodrich A/T KO2 vs Cooper Discoverer AT3 4S — Compared

Relative Score (0–100): 60% professional tests, 40% owner reviews.

Discoverer AT3 4S is ahead, 77–58

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Tire ABFGoodrich

A/T KO2

All Season

Tests – · none yet Owners 55 · 7 reviews

Category by category

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

  1. 59

    Dry

    Discoverer AT3 4S +19
    78
    Why this score
    SourceA/T KO2Discoverer AT3 4S
    Reviews found online5584
  2. 59

    Wet

    Discoverer AT3 4S +23
    82
    Why this score
    SourceA/T KO2Discoverer AT3 4S
    Reviews found online5586
  3. –

    Snow

    No comparison
    72
    Why this score
    SourceA/T KO2Discoverer AT3 4S
    Reviews found online–74
  4. 60

    Comfort

    Discoverer AT3 4S +16
    76
    Why this score
    SourceA/T KO2Discoverer AT3 4S
    Reviews found online5183
  5. –

    Noise

    No comparison
    72
    Why this score
    SourceA/T KO2Discoverer AT3 4S
    Reviews found online–81
  6. 63

    Treadwear

    Discoverer AT3 4S +10
    73
    Why this score
    SourceA/T KO2Discoverer AT3 4S
    Professional tests (TWG score)–71
    Reviews found online6177
  7. 47

    Handling

    Discoverer AT3 4S +30
    77
    Why this score
    SourceA/T KO2Discoverer AT3 4S
    Reviews found online4777
Scores at a glance
CategoryBFGoodrich A/T KO2Cooper Discoverer AT3 4S
Relative Score 58 77
Dry 59 78
Wet 59 82
Snow – 72
Comfort 60 76
Noise – 72
Treadwear 63 73
Handling 47 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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Neither tire has a score here yet, so this weight changes nothing.

Less important
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Less important
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Neither tire has a score here yet, so this weight changes nothing.

Important
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Neutral
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Recomputed
Headline score

A/T KO2

Discoverer AT3 4S

Only categories both tires have data for count toward the headline score.

Pros, cons & observations

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

Tire A A/T KO2

Pros

  • Exceptional durability and long tread life, holding up well over years and extreme temperatures
  • Strong off-road performance in mud, rocks, and sand with reliable sidewall strength when aired down
  • Aggressive, appealing visual styling ('badass' look)

Cons

  • Increased road noise during daily city driving
  • Less than optimal comfort on-road
  • Compromised performance and grip in wet on-road conditions
All owner themes in the A/T KO2 review

Tire B Discoverer AT3 4S

Pros

  • Exceptionally quiet and smooth on-road ride compared to typical all-terrain tires
  • Superb traction in wet, rainy, and deep winter snow conditions
  • Strong value and competitive pricing relative to performance and lifespan

Cons

  • Potential for accelerated tread wear under heavy off-road use or demanding mountain driving
  • Occasional reports of balancing issues or out-of-round tires requiring multiple adjustments
  • Minor fuel economy drop or increased rolling resistance when switching from standard highway tires
All owner themes in the Discoverer AT3 4S review

What real owners are saying

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

Tire A

BFGoodrich A/T KO2

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

Tire B

Cooper Discoverer AT3 4S

Positive

Community sentiment for the Cooper Discoverer AT3 4S is predominantly positive, with drivers praising its quiet highway ride, strong traction across snow, rain, and dry pavement, and appealing appearance. Several owners note that while it handles light off-road duties and daily driving well, tread life occasionally falls short of mileage expectations. In addition, multiple posts highlight frustration and concern regarding availability and recent discontinuation across various sizes.

r/3rdGen4Runner ·7 upvotes ·2021-07-25

“02 SR5 - New Cooper Discoverer AT3 4S P235/75R15 - beautiful tire - excellent handling/feel”
f150forum.com

“Quote: Originally Posted by ArizonaF1Fiddy I went with the Cooper Discoverer AT3 4s (275/65/18). The Michelin Primacy XC were on there when I purchased and they were terrible. I like the looks of the Coopers...the ride is much more controlled and a bit softer over broken surfaces. They do have some slip off the line of you give it full throttle real similar to the XCs. I was looking for an AT that would be great at hooking up in dry weather but probably not gong to find an AT that is sticky enough. They're brand-new so I'll give an update after a few hundred miles or so (I don't put a lot of miles so it'll take time). Thanks to the Forum for the info! This looks nice!”
r/4Runner ·2 upvotes ·2023-10-23

“Tire Question: Michelin Defenders or Cooper Discoverer AT3 4S I have a TRD ORP and want to replace the crappy stock Dunlops. Almost all my driving is on road so looking at the Michelin Defenders or the Cooper AT3 4S in the stock size. I prefer the looks of the coopers but am I going to notice any decrease in wet performance, road noise or mpg compared to the Michelins?”
Top themes
#Snow and wet traction#Quiet highway ride#Tread life and longevity#Discontinuation and availability#Comfortable ride quality#Mild off-road performance

Based on 27 community posts

Specs side by side

Attribute A · BFGoodrich A/T KO2 B · Cooper Discoverer AT3 4S
CategoryAll SeasonAll Season
Vehicle type—SUV and 4x4
Sizes available—14
Rim diameters—15″ – 22″
Tread depth—12 - 14/32″
UTQG—620 A B
Treadwear warranty—65,000 mi
Sidewall—Black Side Wall - Raised Outline White Lettering
Max pressure—44 - 50 psi

Which one should you actually buy?

BFGoodrich A/T KO2

Cooper Discoverer AT3 4S

Winner: Cooper Discoverer AT3 4S — better handling, wet and dry. It leads or ties in every category we score.

Pick tire B You enjoy sharp, responsive handling

Cooper Discoverer AT3 4S scores 77 vs 47 on handling.

Pick tire B Your priority is wet-weather safety

Cooper Discoverer AT3 4S scores 82 vs 59 on wet.

Pick tire B You want the most grip on dry roads

Cooper Discoverer AT3 4S scores 78 vs 59 on dry.

Pick tire B You want the most comfortable ride

Cooper Discoverer AT3 4S scores 76 vs 60 on comfort.

Tire A · BFGoodrich A/T KO2
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Tire B · Cooper Discoverer AT3 4S
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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.

77

Leads

Discoverer AT3 4S

Amazon