Tests – · 1 test Owners 75 · 94 reviews
Head-to-head
Updated
Pirelli Scorpion All Terrain Plus vs Cooper Discoverer STT PRO — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Scorpion All Terrain Plus is ahead, 73–64
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Tests – · none yet Owners 63 · 409 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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73
Dry
Scorpion All Terrain Plus +667Why this score
Source Scorpion All Terrain Plus Discoverer STT PRO Reviews found online 75 67 -
78
Wet
Scorpion All Terrain Plus +969Why this score
Source Scorpion All Terrain Plus Discoverer STT PRO Reviews found online 81 68 -
73
Snow
Scorpion All Terrain Plus +667Why this score
Source Scorpion All Terrain Plus Discoverer STT PRO Reviews found online 75 65 -
71
Comfort
Scorpion All Terrain Plus +962Why this score
Source Scorpion All Terrain Plus Discoverer STT PRO Reviews found online 73 55 -
67
Noise
Scorpion All Terrain Plus +1354Why this score
Source Scorpion All Terrain Plus Discoverer STT PRO Reviews found online 67 39 -
68
Treadwear
Scorpion All Terrain Plus +464Why this score
Source Scorpion All Terrain Plus Discoverer STT PRO Professional tests (TWG score) 66 – Reviews found online 70 63 -
77
Handling
Scorpion All Terrain Plus +2057Why this score
Source Scorpion All Terrain Plus Discoverer STT PRO Reviews found online 77 57
Scores at a glance
| Category | Pirelli Scorpion All Terrain Plus | Cooper Discoverer STT PRO |
|---|---|---|
| Relative Score | 73 | 64 |
| Dry | 73 | 67 |
| Wet | 78 | 69 |
| Snow | 73 | 67 |
| Comfort | 71 | 62 |
| Noise | 67 | 54 |
| Treadwear | 68 | 64 |
| Handling | 77 | 57 |
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
73
/ 100
Scorpion All Terrain Plus
64
/ 100
Discoverer STT PRO
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
Tire B Discoverer STT PRO
Pros
- Outstanding off-road traction in mud, rocks, and dirt
- Surprisingly low road noise and smooth ride for a mud-terrain tire
- Aggressive and appealing visual design with tough sidewalls
Cons
- Can be difficult to balance properly, leading to vibrations for some users
- Faster tread wear reported by a subset of drivers under heavy use
- Reduced traction in specific conditions like deep sand or packed snow/ice
Specs side by side
| Attribute | A · Pirelli Scorpion All Terrain Plus | B · Cooper Discoverer STT PRO |
|---|---|---|
| Category | — | All Season All Terrain and Off Road tires |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 22 | 23 |
| Rim diameters | 16″ – 20″ | 16″ – 20″ |
| Tread depth | 12 - 16/32″ | 18 - 22/32″ |
| UTQG | 640 A B | — |
| Treadwear warranty | 50,000 mi | — |
| Sidewall | Black Side Wall - Raised White Lettering | Black Side Wall - Raised White Lettering |
| Max pressure | 44 - 80 psi | 35 - 80 psi |
Which one should you actually buy?
73
/ 100
Pirelli Scorpion All Terrain Plus
64
/ 100
Cooper Discoverer STT PRO
Winner: Pirelli Scorpion All Terrain Plus — better handling, noise and wet. It leads or ties in every category we score.
Pick tire A
You enjoy sharp, responsive handling
Pirelli Scorpion All Terrain Plus scores 77 vs 57 on handling.
Pick tire A
You want a quieter cabin
Pirelli Scorpion All Terrain Plus scores 67 vs 54 on noise.
Pick tire A
Your priority is wet-weather safety
Pirelli Scorpion All Terrain Plus scores 78 vs 69 on wet.
Pick tire A
You want the most comfortable ride
Pirelli Scorpion All Terrain Plus scores 71 vs 62 on comfort.
Tire A · Pirelli Scorpion All Terrain Plus
Tire B · Cooper Discoverer STT PRO
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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.