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Head-to-head Updated

Pirelli Scorpion All Terrain Plus vs Cooper Discoverer AT3 XLT — Compared

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

Discoverer AT3 XLT leads, 76–72 Narrow edge

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Tire BCooper

Discoverer AT3 XLT

Premium Touring All Season tire

Tests – · none yet Owners 80 · 800 reviews

“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.”

Category by category

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

  1. 72

    Dry

    Discoverer AT3 XLT +6
    78
    Why this score
    SourceScorpion All Terrain PlusDiscoverer AT3 XLT
    Reviews found online7484
  2. 77

    Wet

    Discoverer AT3 XLT +3
    80
    Why this score
    SourceScorpion All Terrain PlusDiscoverer AT3 XLT
    Reviews found online8084
  3. 73

    Snow

    Scorpion All Terrain Plus +3
    70
    Why this score
    SourceScorpion All Terrain PlusDiscoverer AT3 XLT
    Reviews found online7570
  4. 71

    Comfort

    Discoverer AT3 XLT +3
    74
    Why this score
    SourceScorpion All Terrain PlusDiscoverer AT3 XLT
    Reviews found online7380
  5. 67

    Noise

    Discoverer AT3 XLT +5
    72
    Why this score
    SourceScorpion All Terrain PlusDiscoverer AT3 XLT
    Reviews found online6980
  6. 68

    Treadwear

    Discoverer AT3 XLT +4
    72
    Why this score
    SourceScorpion All Terrain PlusDiscoverer AT3 XLT
    Professional tests (TWG score)66–
    Reviews found online7077
  7. 76

    Handling

    Discoverer AT3 XLT +2
    78
    Why this score
    SourceScorpion All Terrain PlusDiscoverer AT3 XLT
    Reviews found online7678
Scores at a glance
CategoryPirelli Scorpion All Terrain PlusCooper Discoverer AT3 XLT
Relative Score 72 76
Dry 72 78
Wet 77 80
Snow 73 70
Comfort 71 74
Noise 67 72
Treadwear 68 72
Handling 76 78

Higher is better. The Relative Score follows your weights below; category scores do not change.

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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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Recomputed
Headline score

Scorpion All Terrain Plus

Discoverer AT3 XLT

Pros, cons & observations

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

Tire A 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

Tire B 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

What real owners are saying

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

Tire A

Pirelli Scorpion All Terrain Plus

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

Tire B

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/Offroad ·1 upvote ·2025-10-02

“I’ve run Hankook dynapro’s, BFG ko2, Nokian outpost nat, and fallen wild peaks. Currently running Cooper discoverer AT3 XLT - they are definitely the quietest all terrains I’ve had. I would recommend them if they are available in your size - many places like simpletire or priority tire carry them.”
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 ·22 upvotes ·2021-11-19

“New Cooper Discoverer AT3 XLT 275/75R20 these ride way better than my old Open Country A/T II”
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

Specs side by side

Attribute A · Pirelli Scorpion All Terrain Plus B · Cooper Discoverer AT3 XLT
Category—Premium Touring All Season tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available294
Rim diameters16″ – 20″16″ – 20″
Tread depth12 - 16/32″16 - 18/32″
UTQG640 A B—
Treadwear warranty50,000 mi60,000 mi
SidewallBlack Side Wall - Raised White LetteringBlack Side Wall - Raised White Lettering
Max pressure44 - 80 psi35 - 80 psi

Which one should you actually buy?

Pirelli Scorpion All Terrain Plus

Cooper Discoverer AT3 XLT

Winner: Cooper Discoverer AT3 XLT — better dry, noise and treadwear. Pick the Pirelli Scorpion All Terrain Plus if snow matters most to you.

Pick tire B You want the most grip on dry roads

Cooper Discoverer AT3 XLT scores 78 vs 72 on dry.

Pick tire B You want a quieter cabin

Cooper Discoverer AT3 XLT scores 72 vs 67 on noise.

Pick tire B You want the longest tread life

Cooper Discoverer AT3 XLT scores 72 vs 68 on treadwear.

Pick tire A You drive through snowy winters

Pirelli Scorpion All Terrain Plus scores 73 vs 70 on snow.

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

Narrow edge

Discoverer AT3 XLT

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