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Cooper Discoverer AT3 XLT vs General Grabber X3 — 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 + 119 owner reviews. How we score

Discoverer AT3 XLT is ahead, 76–68

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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.”

General Grabber X3
Tire BGeneral

Grabber X3

Mud-Terrain tire

Tests – · none yet Owners 67 · 119 reviews

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 +8
    70
    Why this score
    SourceDiscoverer AT3 XLTGrabber X3
    Professional tests (TWG score)≈ 74 (est.)≈ 69 (est.)
    Reviews found online8471

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

    Grabber X3: 60% × 69.2 (est.) + 40% × 71.3 = 70

    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 Grabber X3. 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 +9
    71
    Why this score
    SourceDiscoverer AT3 XLTGrabber X3
    Professional tests (TWG score)≈ 77 (est.)≈ 70 (est.)
    Reviews found online8471

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

    Grabber X3: 60% × 70.4 (est.) + 40% × 70.8 = 71

    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 Grabber X3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 70

    Snow

    Level
    70
    Why this score
    SourceDiscoverer AT3 XLTGrabber X3
    Professional tests (TWG score)≈ 70 (est.)≈ 70 (est.)
    Reviews found online7070

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

    Grabber X3: 60% × 69.9 (est.) + 40% × 69.8 = 70

    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 Grabber X3. 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 +10
    64
    Why this score
    SourceDiscoverer AT3 XLTGrabber X3
    Professional tests (TWG score)≈ 71 (est.)≈ 67 (est.)
    Reviews found online7958

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

    Grabber X3: 60% × 67.2 (est.) + 40% × 58 = 64

    No road tests of comfort for Discoverer AT3 XLT or Grabber X3. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 73

    Noise

    Discoverer AT3 XLT +12
    61
    Why this score
    SourceDiscoverer AT3 XLTGrabber X3
    Professional tests (TWG score)≈ 67 (est.)≈ 67 (est.)
    Reviews found online8152

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

    Grabber X3: 60% × 67.3 (est.) + 40% × 51.7 = 61

    No road tests of noise for Discoverer AT3 XLT or Grabber X3. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 72

    Treadwear

    Discoverer AT3 XLT +7
    65
    Why this score
    SourceDiscoverer AT3 XLTGrabber X3
    Professional tests (TWG score)≈ 69 (est.)≈ 66 (est.)
    Reviews found online7765

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

    Grabber X3: 60% × 65.6 (est.) + 40% × 65.4 = 65

    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 Grabber X3. 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 +20
    58
    Why this score
    SourceDiscoverer AT3 XLTGrabber X3
    Reviews found online7858
Scores at a glance
CategoryCooper Discoverer AT3 XLTGeneral Grabber X3
Relative Score 76 68
Dry 78 70
Wet 80 71
Snow 70 70
Comfort 74 64
Noise 73 61
Treadwear 72 65
Handling (owners) 78 58

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
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Neutral
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Less important
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Neutral
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Less important
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Recomputed
Headline score

Discoverer AT3 XLT

Grabber X3

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 Grabber X3

Pros

  • Exceptional off-road traction in mud, sand, rocks, and snow
  • Surprisingly quiet on the highway for a mud-terrain tire
  • Aggressive and appealing visual design, including popular red lettering

Cons

  • Initial high-speed handling instability or 'squirminess' reported by some drivers
  • Prone to throwing rocks and debris, potentially chipping paint
  • Occasional reports of rapid or uneven tread wear and cupping
All owner themes in the Grabber X3 review

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

General Grabber X3

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

Specs side by side

Attribute A · Cooper Discoverer AT3 XLT B · General Grabber X3
CategoryAll-Terrain tireMud-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available46
Rim diameters16″ – 20″16″ – 18″
Tread depth16 - 18/32″18 - 21/32″
UTQG—AA A
Treadwear warranty60,000 mi—
SidewallBlack Side Wall - Raised White LetteringBlack Side Wall - Serrated Raised Lettering
Max pressure35 - 80 psi35 - 80 psi
Sizes in common22

Which one should you actually buy?

Cooper Discoverer AT3 XLT

General Grabber X3

Winner: Cooper Discoverer AT3 XLT — better handling, noise and comfort. It leads or ties in every category we score.

Pick tire A You enjoy sharp, responsive handling

Cooper Discoverer AT3 XLT scores 78 vs 58 on handling.

Pick tire A You want a quieter cabin

Cooper Discoverer AT3 XLT scores 73 vs 61 on noise.

Pick tire A You want the most comfortable ride

Cooper Discoverer AT3 XLT scores 74 vs 64 on comfort.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer AT3 XLT scores 80 vs 71 on wet.

Tire A · Cooper Discoverer AT3 XLT
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Tire B · General Grabber X3
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Discoverer AT3 XLT or Grabber X3?

Which is better in the wet, Discoverer AT3 XLT or Grabber X3?

Cooper Discoverer AT3 XLT, 80 vs 71 on our wet score.

Which grips better on dry roads, Discoverer AT3 XLT or Grabber X3?

Cooper Discoverer AT3 XLT, 78 vs 70 on our dry score.

Which is better in snow, Discoverer AT3 XLT or Grabber X3?

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

Which is quieter, Discoverer AT3 XLT or Grabber X3?

Cooper Discoverer AT3 XLT, 73 vs 61 on our noise score.

Which is more comfortable, Discoverer AT3 XLT or Grabber X3?

Cooper Discoverer AT3 XLT, 74 vs 64 on our comfort score.

Which lasts longer, Discoverer AT3 XLT or Grabber X3?

Cooper Discoverer AT3 XLT, 72 vs 65 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