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Cooper Discoverer AT3 XLT vs Pirelli Scorpion All Terrain Plus — 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 0 + 1 road tests and 800 + 94 owner reviews. How we score

Discoverer AT3 XLT is ahead, 78–73

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Cooper Discoverer AT3 XLT
Tire ACooper

Discoverer AT3 XLT

All-Terrain tire

± 7

Tests – · none yet Owners 82 · 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. 80

    Dry

    Discoverer AT3 XLT +9
    71
    Why this score
    SourceDiscoverer AT3 XLTScorpion All Terrain Plus
    Professional tests (TWG score)≈ 76 (est.)≈ 70 (est.)
    Reviews found online8673

    Discoverer AT3 XLT: 60% × 75.6 (est.) + 40% × 86 = 80

    Scorpion All Terrain Plus: 60% × 70.2 (est.) + 40% × 73.2 = 71

    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 0.42).

    No road tests of dry for Scorpion All Terrain Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 83

    Wet

    Discoverer AT3 XLT +5
    78
    Why this score
    SourceDiscoverer AT3 XLTScorpion All Terrain Plus
    Professional tests (TWG score)≈ 80 (est.)≈ 76 (est.)
    Reviews found online8881

    Discoverer AT3 XLT: 60% × 80.1 (est.) + 40% × 87.6 = 83

    Scorpion All Terrain Plus: 60% × 76.5 (est.) + 40% × 81.1 = 78

    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 0.55).

    No road tests of wet for Scorpion All Terrain Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 72

    Snow

    Scorpion All Terrain Plus +2
    74
    Why this score
    SourceDiscoverer AT3 XLTScorpion All Terrain Plus
    Professional tests (TWG score)≈ 71 (est.)≈ 73 (est.)
    Reviews found online7276

    Discoverer AT3 XLT: 60% × 71.3 (est.) + 40% × 72.2 = 72

    Scorpion All Terrain Plus: 60% × 72.7 (est.) + 40% × 76 = 74

    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 0.37).

    No road tests of snow for Scorpion All Terrain Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).

  4. 77

    Comfort

    Discoverer AT3 XLT +6
    71
    Why this score
    SourceDiscoverer AT3 XLTScorpion All Terrain Plus
    Professional tests (TWG score)≈ 71 (est.)≈ 70 (est.)
    Reviews found online8172

    Discoverer AT3 XLT: 40% × 71.3 (est.) + 60% × 80.8 = 77

    Scorpion All Terrain Plus: 40% × 69.7 (est.) + 60% × 72.3 = 71

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

  5. 73

    Noise

    Discoverer AT3 XLT +6
    67
    Why this score
    SourceDiscoverer AT3 XLTScorpion All Terrain Plus
    Professional tests (TWG score)≈ 67 (est.)≈ 67 (est.)
    Reviews found online8367

    Discoverer AT3 XLT: 60% × 66.6 (est.) + 40% × 82.6 = 73

    Scorpion All Terrain Plus: 60% × 66.6 (est.) + 40% × 66.9 = 67

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

  6. 74

    Treadwear

    Discoverer AT3 XLT +6
    68
    Why this score
    SourceDiscoverer AT3 XLTScorpion All Terrain Plus
    Professional tests (TWG score) · – / 1 tests≈ 71 (est.)67
    Reviews found online7970

    Discoverer AT3 XLT: 60% × 70.7 (est.) + 40% × 79.2 = 74

    Scorpion All Terrain Plus: 60% × 66.8 + 40% × 69.8 = 68

    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 0.35).

  7. 78

    Handling (owners)

    Discoverer AT3 XLT +3
    75
    Why this score
    SourceDiscoverer AT3 XLTScorpion All Terrain Plus
    Reviews found online7875
Scores at a glance
CategoryCooper Discoverer AT3 XLTPirelli Scorpion All Terrain Plus
Relative Score 78 73
Dry 80 71
Wet 83 78
Snow 72 74
Comfort 77 71
Noise 73 67
Treadwear 74 68
Handling (owners) 78 75

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
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Neutral
NotLessNeutralImportantMost
Less important
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Neutral
NotLessNeutralImportantMost
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Recomputed
Headline score
± 7

Discoverer AT3 XLT

± 8

Scorpion All Terrain Plus

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 Scorpion All Terrain Plus

Pros

  • Exceptional wet, mud, and winter/snow traction (3-peak mountain snowflake certified)
  • Surprisingly quiet and smooth ride on the highway compared to aggressive competitors
  • Aggressive, attractive sidewall and tread styling that enhances vehicle appearance

Cons

  • Some users reported persistent balancing issues or vibrations at highway speeds
  • A few drivers noted increased road noise or uneven shoulder wear as the tires aged
  • Minor reduction in fuel economy reported by some truck and SUV owners
All owner themes in the Scorpion All Terrain Plus 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.

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.”
cumminsforum.com ·2024-08-31

“I figure any tire review is good, even if late. I'm nearing the end of use for Cooper Discoverer AT3 XLT in LT275/70R18E 125S on OE 18x8" chrome clad wheels. They have been fantastic tires , great in the snow, quiet, never felt like they were giving up any traction except for the fourth (last) winter, but they never felt dangerous. They wore dead flat across the tread, kept the fronts at 65# and rears at 75#, rotated about every 5k miles, used Thuren alignment specs. They made 50k miles (the warranty in 2020) no problem. I have no problem getting them again or recommending them, but I like trying something different. If the different tires I chose this time don't work out (45 days), I'll just get these Coopers again.”
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.”
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

Pirelli Scorpion All Terrain Plus

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

Specs side by side

Attribute A · Cooper Discoverer AT3 XLT B · Pirelli Scorpion All Terrain Plus
CategoryAll-Terrain tireAll-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available429
Rim diameters16″ – 20″16″ – 20″
Tread depth16 - 18/32″12 - 16/32″
UTQG—640 A B
Treadwear warranty60,000 mi50,000 mi
SidewallBlack Side Wall - Raised White LetteringBlack Side Wall - Raised White Lettering
Max pressure35 - 80 psi44 - 80 psi
Sizes in common33

Which one should you actually buy?

Cooper Discoverer AT3 XLT

Pirelli Scorpion All Terrain Plus

Winner: Cooper Discoverer AT3 XLT — better dry, comfort and noise. Where the Pirelli Scorpion All Terrain Plus is ahead, it is by less than 3 points.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 XLT scores 80 vs 71 on dry.

Pick tire A You want the most comfortable ride

Cooper Discoverer AT3 XLT scores 77 vs 71 on comfort.

Pick tire A You want a quieter cabin

Cooper Discoverer AT3 XLT scores 73 vs 67 on noise.

Pick tire A You want the longest tread life

Cooper Discoverer AT3 XLT scores 74 vs 68 on treadwear.

Tire A · Cooper Discoverer AT3 XLT
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Tire B · Pirelli Scorpion All Terrain Plus
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Discoverer AT3 XLT or Scorpion All Terrain Plus?

Which is better in the wet, Discoverer AT3 XLT or Scorpion All Terrain Plus?

Cooper Discoverer AT3 XLT, 83 vs 78 on our wet score.

Which grips better on dry roads, Discoverer AT3 XLT or Scorpion All Terrain Plus?

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

Which is better in snow, Discoverer AT3 XLT or Scorpion All Terrain Plus?

Neither, by our numbers: 72 vs 74 on the snow score, within 3 points.

Which is quieter, Discoverer AT3 XLT or Scorpion All Terrain Plus?

Cooper Discoverer AT3 XLT, 73 vs 67 on our noise score.

Which is more comfortable, Discoverer AT3 XLT or Scorpion All Terrain Plus?

Cooper Discoverer AT3 XLT, 77 vs 71 on our comfort score.

Which lasts longer, Discoverer AT3 XLT or Scorpion All Terrain Plus?

Cooper Discoverer AT3 XLT, 74 vs 68 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