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Cooper Discoverer AT3 XLT vs General Grabber A/T — Compared

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

Discoverer AT3 XLT is ahead, 76–65

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Tire ACooper

Discoverer AT3 XLT

Premium Touring All Season tire

Tests – · none yet Owners 80 · 800 reviews

“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.”

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 +14
    64
    Why this score
    SourceDiscoverer AT3 XLTGrabber A/T
    Reviews found online8463
  2. 80

    Wet

    Discoverer AT3 XLT +14
    66
    Why this score
    SourceDiscoverer AT3 XLTGrabber A/T
    Reviews found online8465
  3. 70

    Snow

    Discoverer AT3 XLT +8
    62
    Why this score
    SourceDiscoverer AT3 XLTGrabber A/T
    Reviews found online7057
  4. 74

    Comfort

    Discoverer AT3 XLT +8
    66
    Why this score
    SourceDiscoverer AT3 XLTGrabber A/T
    Reviews found online8062
  5. 72

    Noise

    No comparison
    –
    Why this score
    SourceDiscoverer AT3 XLTGrabber A/T
    Reviews found online80–
  6. 72

    Treadwear

    Discoverer AT3 XLT +7
    65
    Why this score
    SourceDiscoverer AT3 XLTGrabber A/T
    Reviews found online7764
  7. 78

    Handling

    Discoverer AT3 XLT +14
    64
    Why this score
    SourceDiscoverer AT3 XLTGrabber A/T
    Reviews found online7864
Scores at a glance
CategoryCooper Discoverer AT3 XLTGeneral Grabber A/T
Relative Score 76 65
Dry 78 64
Wet 80 66
Snow 70 62
Comfort 74 66
Noise 72 –
Treadwear 72 65
Handling 78 64

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.

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Recomputed
Headline score

Discoverer AT3 XLT

Grabber A/T

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 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 A/T

Pros

  • Excellent off-road traction on mud, grass, gravel, and farm tracks
  • Good performance in snow and winter conditions
  • Reasonably quiet and smooth on-road manners compared to more aggressive alternatives

Cons

  • Poor or slippery grip on wet tarmac, raising safety concerns for some users
  • Balancing issues reported by multiple owners
  • Weak sidewall durability or vulnerability to punctures on low-profile applications
All owner themes in the Grabber A/T 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 opinion of the Cooper Discoverer AT3 XLT is overwhelmingly positive, with users frequently praising its smooth ride quality, exceptional quietness on the highway, and long-term durability compared to competitors like BFG KO2 and Toyo Open Country. Drivers also appreciate its solid value and performance when towing. A few users occasionally confuse the M+S marking with the Three-Peak Mountain Snowflake rating for severe winter conditions.

r/overlanding ·2 upvotes ·2026-09-28

“Cooper adventurer (pep boys exclusive version of the discoverer), and then Cooper discoverer at3 xlt have been the tires on my tundra for the last +10yrs. I have put 80-100k on each set. I tow a smaller camp trailer regularly. They discontinued that tire, so I'm going to try the stronghold AT next.”
r/ram_trucks ·27 upvotes ·2024-07-11

“Cooper Discoverer AT3 XLT Picked up a set of Discoverer AT3 XLT from simple tire. With the 4th of July discounts all 4 were under 1k before taxes. I had the AT3 4S on a previous ram and they held up so I’m expecting good things here.”
r/Trucks ·3 upvotes ·2021-03-26

“Are my Discoverer AT3 XLT snow rated? Going snowboarding and roads require snow tires or chains /cables. I was looking at the sidewall of my Cooper Discoverer XLT and saw there is a small M+S next to the tire size. Is it stupid to assume these are snow rated? I'm not trying to get a ticket for not having chains if I need them, which most places seem to be sold out locally.”
Top themes
#ride comfort#low road noise#tread longevity#winter and snow ratings#comparison to competitors#pricing and value#towing performance

Based on 8 community posts

Tire B

General Grabber A/T

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

Specs side by side

Attribute A · Cooper Discoverer AT3 XLT B · General Grabber A/T
CategoryPremium Touring All Season tireAll Season
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available4—
Rim diameters16″ – 20″—
Tread depth16 - 18/32″—
Treadwear warranty60,000 mi—
SidewallBlack Side Wall - Raised White Lettering—
Max pressure35 - 80 psi—

Which one should you actually buy?

Cooper Discoverer AT3 XLT

General Grabber A/T

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

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 XLT scores 78 vs 64 on dry.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer AT3 XLT scores 80 vs 66 on wet.

Pick tire A You enjoy sharp, responsive handling

Cooper Discoverer AT3 XLT scores 78 vs 64 on handling.

Pick tire A You drive through snowy winters

Cooper Discoverer AT3 XLT scores 70 vs 62 on snow.

Tire A · Cooper Discoverer AT3 XLT
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Tire B · General Grabber A/T
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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.

76

Leads

Discoverer AT3 XLT

Amazon