Tests – · 1 test Owners 84 · 688 reviews
Best test result: #5 of 18 in 2022 Consumer Reports All Terrain Truck Tires (tested tread life (miles))
“Got some 225/75/16 Cooper Discoverer AT3 4s - Great fit on stock setup.”
Head-to-head
Updated
Cooper Discoverer AT3 4S 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 1 + 1 road tests and 688 + 94 owner reviews. How we score
Discoverer AT3 4S is ahead, 79–72
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Tests – · 1 test Owners 74 · 94 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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81
Dry
Discoverer AT3 4S +1071Why this score
Source Discoverer AT3 4S Scorpion All Terrain Plus Professional tests (TWG score) ≈ 76 (est.) ≈ 70 (est.) Reviews found online 88 73 Discoverer AT3 4S: 60% × 76.4 (est.) + 40% × 88.4 = 81
Scorpion All Terrain Plus: 60% × 69.9 (est.) + 40% × 72.6 = 71
No road tests of dry for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
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 0.41).
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85
Wet
Discoverer AT3 4S +778Why this score
Source Discoverer AT3 4S Scorpion All Terrain Plus Professional tests (TWG score) ≈ 82 (est.) ≈ 76 (est.) Reviews found online 91 81 Discoverer AT3 4S: 60% × 81.6 (est.) + 40% × 90.6 = 85
Scorpion All Terrain Plus: 60% × 76.2 (est.) + 40% × 80.8 = 78
No road tests of wet for Discoverer AT3 4S. 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).
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73
Snow
Level73Why this score
Source Discoverer AT3 4S Scorpion All Terrain Plus Professional tests (TWG score) ≈ 72 (est.) ≈ 72 (est.) Reviews found online 75 76 Discoverer AT3 4S: 60% × 71.8 (est.) + 40% × 74.5 = 73
Scorpion All Terrain Plus: 60% × 72.1 (est.) + 40% × 75.5 = 73
No road tests of snow for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
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 0.32).
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80
Comfort
Discoverer AT3 4S +971Why this score
Source Discoverer AT3 4S Scorpion All Terrain Plus Professional tests (TWG score) ≈ 72 (est.) ≈ 69 (est.) Reviews found online 85 72 Discoverer AT3 4S: 40% × 72 (est.) + 60% × 85.2 = 80
Scorpion All Terrain Plus: 40% × 69.2 (est.) + 60% × 71.6 = 71
No road tests of comfort for Discoverer AT3 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
No road tests of comfort for Scorpion All Terrain Plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
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73
Noise
Discoverer AT3 4S +667Why this score
Source Discoverer AT3 4S Scorpion All Terrain Plus Professional tests (TWG score) ≈ 66 (est.) ≈ 66 (est.) Reviews found online 83 67 Discoverer AT3 4S: 60% × 66.4 (est.) + 40% × 83.3 = 73
Scorpion All Terrain Plus: 60% × 66.4 (est.) + 40% × 66.6 = 67
No road tests of noise for Discoverer AT3 4S or Scorpion All Terrain Plus. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
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75
Treadwear
Discoverer AT3 4S +768Why this score
Source Discoverer AT3 4S Scorpion All Terrain Plus Professional tests (TWG score) · 1 / 1 tests 71 67 Reviews found online 80 70 Tested Tread Life (Miles) (% of best) · 1 shared test · wins 1–0 60% 55% Discoverer AT3 4S: 60% × 71.1 + 40% × 79.9 = 75
Scorpion All Terrain Plus: 60% × 66.9 + 40% × 69.9 = 68
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80
Handling (owners)
Discoverer AT3 4S +575Why this score
Source Discoverer AT3 4S Scorpion All Terrain Plus Reviews found online 80 75
Scores at a glance
| Category | Cooper Discoverer AT3 4S | Pirelli Scorpion All Terrain Plus |
|---|---|---|
| Relative Score | 79 | 72 |
| Dry | 81 | 71 |
| Wet | 85 | 78 |
| Snow | 73 | 73 |
| Comfort | 80 | 71 |
| Noise | 73 | 67 |
| Treadwear | 75 | 68 |
| Handling (owners) | 80 | 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 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
79
/ 100
Discoverer AT3 4S
72
/ 100
Scorpion All Terrain Plus
The professional test results behind the scores
Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.
In the overall rankings of 1 tests that ran both, Cooper Discoverer AT3 4S finished ahead 1 times and Pirelli Scorpion All Terrain Plus 0 times.
| Discipline | Category | Discoverer AT3 4S | Scorpion All Terrain Plus | Δ | Head-to-head |
|---|---|---|---|---|---|
| Tested Tread Life (Miles) | Treadwear | 60% | 55% | +5.0 | 1–0 in 1 shared test Newest: 2022 Consumer Reports All Terrain Truck Tires · 215/60R17 |
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #5/18 | #14/18 | – | 1–0 in 1 shared test Newest: 2022 Consumer Reports All Terrain Truck Tires · 215/60R17 |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Discoverer AT3 4S
Pros
- Exceptionally quiet and smooth on-road ride compared to typical all-terrain tires
- Superb traction in wet, rainy, and deep winter snow conditions
- Strong value and competitive pricing relative to performance and lifespan
Cons
- Potential for accelerated tread wear under heavy off-road use or demanding mountain driving
- Occasional reports of balancing issues or out-of-round tires requiring multiple adjustments
- Minor fuel economy drop or increased rolling resistance when switching from standard highway tires
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
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Positive
Cooper Discoverer AT3 4S
Community sentiment for the Cooper Discoverer AT3 4S is predominantly positive, with drivers praising its quiet highway ride, strong traction across snow, rain, and dry pavement, and appealing appearance. Several owners note that while it handles light off-road duties and daily driving well, tread life occasionally falls short of mileage expectations. In addition, multiple posts highlight frustration and concern regarding availability and recent discontinuation across various sizes.
r/subaru
·130 upvotes ·2019-04-20
“New tires 👌 cooper discoverer at3 4s 215/70/16”
r/f150
·23 upvotes ·2022-09-03
“New tire day. Cooper Discoverer AT3 4S. So far so good. They ride great and they’re really quiet.”
r/SubaruForester
·4 upvotes ·2022-12-02
“Cooper Discoverer AT3 4S discontinued, good alternative? I was hoping to replace my stock tires with the Discoverer AT3 tires since I hear really good things about them and they are a bit more aggressive. Seems like they are discontinued at all the normal tire shops online. So what are my alternatives for an AT style tire? Looking for 235/60R17 to put on Drag DR-31 rims. I live in CO so snow and some light off roading are things to consider. Read more”
Top themes
#Snow and wet traction#Quiet highway ride#Tread life and longevity#Discontinuation and availability#Comfortable ride quality#Mild off-road performance
Based on 27 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 4S | B · Pirelli Scorpion All Terrain Plus |
|---|---|---|
| Category | All-Terrain tire | All-Terrain tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 14 | 29 |
| Rim diameters | 15″ – 22″ | 16″ – 20″ |
| Tread depth | 12 - 14/32″ | 12 - 16/32″ |
| UTQG | 620 A B | 640 A B |
| Treadwear warranty | 65,000 mi | 50,000 mi |
| Sidewall | Black Side Wall - Raised Outline White Lettering | Black Side Wall - Raised White Lettering |
| Max pressure | 44 - 50 psi | 44 - 80 psi |
| Sizes in common | 4 | 4 |
Which one should you actually buy?
79
/ 100
Cooper Discoverer AT3 4S
72
/ 100
Pirelli Scorpion All Terrain Plus
Winner: Cooper Discoverer AT3 4S — better dry, comfort and wet. It leads or ties in every category we score.
Pick tire A
You want the most grip on dry roads
Cooper Discoverer AT3 4S scores 81 vs 71 on dry.
Pick tire A
You want the most comfortable ride
Cooper Discoverer AT3 4S scores 80 vs 71 on comfort.
Pick tire A
Your priority is wet-weather safety
Cooper Discoverer AT3 4S scores 85 vs 78 on wet.
Pick tire A
You want the longest tread life
Cooper Discoverer AT3 4S scores 75 vs 68 on treadwear.
Tire A · Cooper Discoverer AT3 4S
Tire B · Pirelli Scorpion All Terrain Plus
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Discoverer AT3 4S or Scorpion All Terrain Plus?
Which is better in the wet, Discoverer AT3 4S or Scorpion All Terrain Plus?
Cooper Discoverer AT3 4S, 85 vs 78 on our wet score.
Which grips better on dry roads, Discoverer AT3 4S or Scorpion All Terrain Plus?
Cooper Discoverer AT3 4S, 81 vs 71 on our dry score.
Which is better in snow, Discoverer AT3 4S or Scorpion All Terrain Plus?
Neither, by our numbers: 73 vs 73 on the snow score, within 3 points.
Which is quieter, Discoverer AT3 4S or Scorpion All Terrain Plus?
Cooper Discoverer AT3 4S, 73 vs 67 on our noise score.
Which is more comfortable, Discoverer AT3 4S or Scorpion All Terrain Plus?
Cooper Discoverer AT3 4S, 80 vs 71 on our comfort score.
Which lasts longer, Discoverer AT3 4S or Scorpion All Terrain Plus?
Cooper Discoverer AT3 4S, 75 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