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

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

Discoverer AT3 LT leads, 74–72 Narrow edge

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Tire ACooper

Discoverer AT3 LT

Premium Touring All Season tire

Tests – · none yet Owners 77 · 251 reviews

“From the Cooper site: Discoverer A/T3 55,000 Mile Treadwear Protection - Light Truck sizes 60,000 Mile Treadwear Protection - SUV sizes The Discoverer A/T3™ is an all-season, all-terrain tire designed to perform well on the highway and off for drivers of SUVs and light duty trucks. Excellent highway performance Excellent wet traction Improved treadwear and traction in rocky and gravel terrain M+S Rated Discoverer AT3 LT 60,000 Mile Treadwear Protection - LT-metric sizes The Discoverer AT3 LT™ with Durable Tread Technology™ hauls heavy loads with less wear and are built to withstand ongoing assault from dirt and gravel. Designed to prevent shredding on rocky and gravel terrain Extreme durability for hauling Superior control and braking in wet weather Cutting through the marketing-speak, it sounds like the A/T3 is more road biased and the AT3 LT is perhaps heavier duty and more offroad biased. And the AT3 LT is not rated for winter conditions. I've had Discount Tire try to feed me a load of BS on more than one occasion. It sounds like that's what they were doing to you. The A/T3 is definitely still available.”

Category by category

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

  1. 77

    Dry

    Discoverer AT3 LT +5
    72
    Why this score
    SourceDiscoverer AT3 LTScorpion All Terrain Plus
    Reviews found online8374
  2. 79

    Wet

    Discoverer AT3 LT +2
    77
    Why this score
    SourceDiscoverer AT3 LTScorpion All Terrain Plus
    Reviews found online8280
  3. 71

    Snow

    Scorpion All Terrain Plus +2
    73
    Why this score
    SourceDiscoverer AT3 LTScorpion All Terrain Plus
    Reviews found online7375
  4. 72

    Comfort

    Discoverer AT3 LT +1
    71
    Why this score
    SourceDiscoverer AT3 LTScorpion All Terrain Plus
    Reviews found online7573
  5. 71

    Noise

    Discoverer AT3 LT +4
    67
    Why this score
    SourceDiscoverer AT3 LTScorpion All Terrain Plus
    Reviews found online7869
  6. 71

    Treadwear

    Discoverer AT3 LT +3
    68
    Why this score
    SourceDiscoverer AT3 LTScorpion All Terrain Plus
    Professional tests (TWG score)–66
    Reviews found online7470
  7. 70

    Handling

    Scorpion All Terrain Plus +6
    76
    Why this score
    SourceDiscoverer AT3 LTScorpion All Terrain Plus
    Reviews found online7076
Scores at a glance
CategoryCooper Discoverer AT3 LTPirelli Scorpion All Terrain Plus
Relative Score 74 72
Dry 77 72
Wet 79 77
Snow 71 73
Comfort 72 71
Noise 71 67
Treadwear 71 68
Handling 70 76

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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Recomputed
Headline score

Discoverer AT3 LT

Scorpion All Terrain Plus

Pros, cons & observations

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

Tire A Discoverer AT3 LT

Pros

  • Excellent towing stability with minimal sidewall flex under heavy loads
  • Surprisingly quiet and smooth on the highway for an all-terrain tire
  • Strong durability and wear resistance on rough gravel, rock, and dirt roads

Cons

  • Subpar performance in heavy snow, ice, or deep mud for some users
  • Occasional reports of balancing difficulties or initial cold-weather tire thumping
  • Isolated incidents of sidewall splitting or premature wear
All owner themes in the Discoverer AT3 LT 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 LT

Mixed

Community sentiment regarding the Cooper Discoverer AT3 LT is mixed with a positive lean. Drivers appreciate its wet and snow traction, low noise, and strong tread life under heavy loads, though some report irregular wear and persistent balancing or vibration issues after accumulating mileage.

clubfrontier.org ·2 upvotes ·2023-02-26

“I got 80k (rotating every 10k) out of Coopers on my 2010 and have 40k on current 2019 SL ... Discoverer AT3 LT ... they are designed for heavier trucks... excellent noise, excellent in water. I got stuck in a grass field in the factory HT hancocks... same field few years later with coopers.. no issues.. never tried in snow but imagine they would do well...”
hdrams.com ·1 upvote ·2026-01-17

“I ran a set of 295/70r18 Discoverer AT3 LT’s for about 25k miles. I had seen lots of negative reviews but figured that I would be OK with them for my needs ( I drive in snow 4 - 5 times per year). Initially I was happy with the tires as they performed well in the snow and the rain but after 10k miles they developed a balance issue and started to wear irregularly. I had never experienced anything like it before. I actually purchased new shocks but never installed them. As I drive a lot of miles I just never had any time to deal with chasing the vibration / balance issue and just replaced the tires with Bridgestone Dueler AT Ascent. I now have about 20k miles on the Bridgestone’s and they are still ride very smooth and are wearing great.”
wanderthewest.com ·2020-07-08

“I have the Cooper Discoverer AT3 LT tires on my 2010 Tundra with Hawk. They are E series tires. Found this link that discusses the differences between the LT and XLT. Really like my LT's. The increased tire mileage would probably be a good thing of the price difference isn't too great. Paul”
Top themes
#Wet traction performance#Treadwear and longevity#Heavy load handling#Balancing and vibration#Snow traction capability

Based on 5 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 LT B · Pirelli Scorpion All Terrain Plus
CategoryPremium Touring All Season tire—
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available1429
Rim diameters16″ – 18″16″ – 20″
Tread depth16 - 17/32″12 - 16/32″
UTQG—640 A B
Treadwear warranty60,000 mi50,000 mi
SidewallBlack Side Wall - Raised Outline White LetteringBlack Side Wall - Raised White Lettering
Max pressure50 - 80 psi44 - 80 psi

Which one should you actually buy?

Cooper Discoverer AT3 LT

Pirelli Scorpion All Terrain Plus

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

Pick tire B You enjoy sharp, responsive handling

Pirelli Scorpion All Terrain Plus scores 76 vs 70 on handling.

Pick tire A You want the most grip on dry roads

Cooper Discoverer AT3 LT scores 77 vs 72 on dry.

Pick tire A You want a quieter cabin

Cooper Discoverer AT3 LT scores 71 vs 67 on noise.

Pick tire A You want the longest tread life

Cooper Discoverer AT3 LT scores 71 vs 68 on treadwear.

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

74

Narrow edge

Discoverer AT3 LT

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