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Cooper Discoverer AT3 XLT vs Yokohama Geolandar G91A — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 0 road tests and 800 + 5 owner reviews. How we score

Discoverer AT3 XLT is ahead, 76–38

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Cooper Discoverer AT3 XLT
Tire ACooper

Discoverer AT3 XLT

All-Terrain tire

Tests – · none yet Owners 79 · 800 reviews

“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”

Category by category

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

  1. 78

    Dry

    Discoverer AT3 XLT +41
    37
    Why this score
    SourceDiscoverer AT3 XLTGeolandar G91A
    Professional tests (TWG score)≈ 74 (est.)≈ 49 (est.)
    Reviews found online8421

    Discoverer AT3 XLT: 60% × 74.3 (est.) + 40% × 84 = 78

    Geolandar G91A: 60% × 48.7 (est.) + 40% × 20.5 = 37

    No road tests of dry for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

    No road tests of dry for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 80

    Wet

    Discoverer AT3 XLT +48
    32
    Why this score
    SourceDiscoverer AT3 XLTGeolandar G91A
    Professional tests (TWG score)≈ 77 (est.)≈ 41 (est.)
    Reviews found online8419

    Discoverer AT3 XLT: 60% × 77.5 (est.) + 40% × 83.5 = 80

    Geolandar G91A: 60% × 41.3 (est.) + 40% × 18.9 = 32

    No road tests of wet for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

    No road tests of wet for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 70

    Snow

    Discoverer AT3 XLT +22
    48
    Why this score
    SourceDiscoverer AT3 XLTGeolandar G91A
    Professional tests (TWG score)≈ 70 (est.)≈ 58 (est.)
    Reviews found online7033

    Discoverer AT3 XLT: 60% × 69.9 (est.) + 40% × 69.9 = 70

    Geolandar G91A: 60% × 57.5 (est.) + 40% × 32.5 = 48

    No road tests of snow for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

    No road tests of snow for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 74

    Comfort

    Discoverer AT3 XLT +33
    41
    Why this score
    SourceDiscoverer AT3 XLTGeolandar G91A
    Professional tests (TWG score)≈ 71 (est.)≈ 60 (est.)
    Reviews found online7914

    Discoverer AT3 XLT: 60% × 70.9 (est.) + 40% × 79.3 = 74

    Geolandar G91A: 60% × 59.6 (est.) + 40% × 14.1 = 41

    No road tests of comfort for Discoverer AT3 XLT or Geolandar G91A. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 73

    Noise

    Discoverer AT3 XLT +21
    52
    Why this score
    SourceDiscoverer AT3 XLTGeolandar G91A
    Professional tests (TWG score)≈ 67 (est.)≈ 67 (est.)
    Reviews found online8129

    Discoverer AT3 XLT: 60% × 67.3 (est.) + 40% × 80.8 = 73

    Geolandar G91A: 60% × 67.3 (est.) + 40% × 29 = 52

    No road tests of noise for Discoverer AT3 XLT or Geolandar G91A. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 72

    Treadwear

    Discoverer AT3 XLT +33
    39
    Why this score
    SourceDiscoverer AT3 XLTGeolandar G91A
    Professional tests (TWG score)≈ 69 (est.)≈ 52 (est.)
    Reviews found online7720

    Discoverer AT3 XLT: 60% × 69 (est.) + 40% × 76.5 = 72

    Geolandar G91A: 60% × 51.6 (est.) + 40% × 20.1 = 39

    No road tests of treadwear for Discoverer AT3 XLT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

    No road tests of treadwear for Geolandar G91A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 78

    Handling (owners)

    Discoverer AT3 XLT +55
    23
    Why this score
    SourceDiscoverer AT3 XLTGeolandar G91A
    Reviews found online7823
Scores at a glance
CategoryCooper Discoverer AT3 XLTYokohama Geolandar G91A
Relative Score 76 38
Dry 78 37
Wet 80 32
Snow 70 48
Comfort 74 41
Noise 73 52
Treadwear 72 39
Handling (owners) 78 23

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
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Neutral
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Less important
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Neutral
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Recomputed
Headline score

Discoverer AT3 XLT

Geolandar G91A

Pros, cons & observations

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

Tire A Discoverer AT3 XLT

Pros

  • Significantly lower road noise than comparable aggressive all-terrain tires
  • Excellent wet weather, snow, and slush traction
  • Sturdy sidewalls and stable performance when towing heavy loads

Cons

  • Some users report difficulty with balancing, leading to vibrations or a rough ride
  • Tread life occasionally falls short of expectations for certain drivers
  • Can struggle or get gummed up in deep mud
All owner themes in the Discoverer AT3 XLT review

Tire B Geolandar G91A

Not enough owner reviews yet to extract themes.

What real owners are saying

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

Tire A

Cooper Discoverer AT3 XLT

Positive

Community members report high satisfaction with the Cooper Discoverer AT3 XLT, highlighting its quiet ride, long tread life, and strong winter performance. Several owners praise its smooth ride quality and durability under towing conditions compared to rival all-terrain tires. Discussion also commonly centers around sizing, fitment, and snow ratings.

clubfrontier.org ·2 upvotes ·2023-02-23

“COOPER DISCOVERER AT3 XLT / NO STUD / 32.56" / 54 LBS / 3 PEAK / $265.99 This is what I came here to suggest ^ BFG also has the KO3s coming out soon right? Pictures KO3s release for Spring 2023 Patagonia Milestars are also pretty great tires I hear, but I've never had them. They are a subsidiary company of Nankang, made in Taiwan.”
f150forum.com

“Quote: Originally Posted by Stadt This was while I was running a ReadyLift 2.25" level only. The ride was good with only the level, just normal body roll and bed hop. Upgrading to the Bilstein 6112 and 5160 made the truck handle much better. You can gain this same set up with Bilsteins as well. The 285/65R20 did not rub unless the suspension was flexed, but under normal driving conditions, no issues. This tire size is perfect for a 2" level while running the stock wheels. Aftermarket wheels will require a smaller size, 275/65R20 is typically largest before significant rubbing. Thanks for the reply. I actually read through your entire build thread last night. Wow. Awesome stuff there. I’m planning on keeping the OEM Platinum trim 20” wheels. So I could run the Discoverer AT3 XLT 275/65 R20 without any rub at all with either a 2” spacer level or something like this kit from Fox? I don’t want to trim anything and don’t want any rub even when suspension is flexed. It seems like most info online indicates a 33” tire is the max for a 2” level and no rubbing. I believe the 275/65 R20 is a 34” tire. Thanks for the advice!”
r/NissanTitan ·29 upvotes ·2023-03-29

“Put some new tires on the XD today. Cooper Discoverer AT3 XLT in 275/70R18. I usually run BFG KO2s on my trucks but wanted to try something different this time.”
Top themes
#low road noise#tread longevity and wear#snow and winter traction#tire sizing and fitment#ride quality and comfort#towing performance

Based on 13 community posts

Tire B

Yokohama Geolandar G91A

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

Specs side by side

Attribute A · Cooper Discoverer AT3 XLT B · Yokohama Geolandar G91A
CategoryAll-Terrain tireAll-Season tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available41
Rim diameters16″ – 20″17″
Tread depth16 - 18/32″10/32″
UTQG—280 B A
Treadwear warranty60,000 mi—
SidewallBlack Side Wall - Raised White LetteringBlackwall
Max pressure35 - 80 psi44 psi

Which one should you actually buy?

Cooper Discoverer AT3 XLT

Yokohama Geolandar G91A

Winner: Cooper Discoverer AT3 XLT — better handling, wet and dry. It leads or ties in every category we score. Yokohama Geolandar G91A rests on little evidence so far (0 tests, 5 reviews), so read this result as provisional.

Pick tire A You enjoy sharp, responsive handling

Cooper Discoverer AT3 XLT scores 78 vs 23 on handling.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer AT3 XLT scores 80 vs 32 on wet.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 XLT scores 78 vs 37 on dry.

Pick tire A You want the most comfortable ride

Cooper Discoverer AT3 XLT scores 74 vs 41 on comfort.

Tire A · Cooper Discoverer AT3 XLT
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Tire B · Yokohama Geolandar G91A
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Discoverer AT3 XLT or Geolandar G91A?

Which is better in the wet, Discoverer AT3 XLT or Geolandar G91A?

Cooper Discoverer AT3 XLT, 80 vs 32 on our wet score.

Which grips better on dry roads, Discoverer AT3 XLT or Geolandar G91A?

Cooper Discoverer AT3 XLT, 78 vs 37 on our dry score.

Which is better in snow, Discoverer AT3 XLT or Geolandar G91A?

Cooper Discoverer AT3 XLT, 70 vs 48 on our snow score.

Which is quieter, Discoverer AT3 XLT or Geolandar G91A?

Cooper Discoverer AT3 XLT, 73 vs 52 on our noise score.

Which is more comfortable, Discoverer AT3 XLT or Geolandar G91A?

Cooper Discoverer AT3 XLT, 74 vs 41 on our comfort score.

Which lasts longer, Discoverer AT3 XLT or Geolandar G91A?

Cooper Discoverer AT3 XLT, 72 vs 39 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