Tests – · none yet Owners 65 · 11 reviews
Cooper Discoverer A/TR looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Cooper Discoverer A/TR vs Nexen Roadian AT Pro RA8 — 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 11 + 70 owner reviews. How we score
Roadian AT Pro RA8 leads, 69–67 Narrow edge
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Tests – · 1 test Owners 70 · 70 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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68
Dry
Discoverer A/TR +167Why this score
Source Discoverer A/TR Roadian AT Pro RA8 Professional tests (TWG score) ≈ 68 (est.) ≈ 68 (est.) Reviews found online 68 67 Discoverer A/TR: 60% × 68 (est.) + 40% × 67.8 = 68
Roadian AT Pro RA8: 60% × 67.5 (est.) + 40% × 66.7 = 67
No road tests of dry for Discoverer A/TR. 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 Roadian AT Pro RA8. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
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68
Wet
Roadian AT Pro RA8 +371Why this score
Source Discoverer A/TR Roadian AT Pro RA8 Professional tests (TWG score) ≈ 69 (est.) ≈ 71 (est.) Reviews found online 68 71 Discoverer A/TR: 60% × 69 (est.) + 40% × 67.6 = 68
Roadian AT Pro RA8: 60% × 70.6 (est.) + 40% × 70.5 = 71
No road tests of wet for Discoverer A/TR. 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 Roadian AT Pro RA8. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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–
Snow
No comparison71Why this score
Source Discoverer A/TR Roadian AT Pro RA8 Professional tests (TWG score) – ≈ 71 (est.) Reviews found online – 71 Roadian AT Pro RA8: 60% × 70.8 (est.) + 40% × 70.8 = 71
No road tests of snow for Roadian AT Pro RA8. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
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65
Comfort
Level65Why this score
Source Discoverer A/TR Roadian AT Pro RA8 Professional tests (TWG score) ≈ 68 (est.) ≈ 68 (est.) Reviews found online 63 63 Discoverer A/TR: 40% × 68.1 (est.) + 60% × 63.4 = 65
Roadian AT Pro RA8: 40% × 68.1 (est.) + 60% × 63.4 = 65
No road tests of comfort for Discoverer A/TR or Roadian AT Pro RA8. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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–
Noise
No comparison68Why this score
Source Discoverer A/TR Roadian AT Pro RA8 Professional tests (TWG score) – ≈ 67 (est.) Reviews found online – 71 Roadian AT Pro RA8: 60% × 66.6 (est.) + 40% × 71.3 = 68
No road tests of noise for Roadian AT Pro RA8. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
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64
Treadwear
Roadian AT Pro RA8 +569Why this score
Source Discoverer A/TR Roadian AT Pro RA8 Professional tests (TWG score) · – / 1 tests ≈ 65 (est.) 67 Reviews found online 62 73 Discoverer A/TR: 60% × 64.7 (est.) + 40% × 61.9 = 64
Roadian AT Pro RA8: 60% × 66.8 + 40% × 73.3 = 69
No road tests of treadwear for Discoverer A/TR. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
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60
Handling (owners)
No comparison–Why this score
Source Discoverer A/TR Roadian AT Pro RA8 Reviews found online 60 –
Scores at a glance
| Category | Cooper Discoverer A/TR | Nexen Roadian AT Pro RA8 |
|---|---|---|
| Relative Score | 67 | 69 |
| Dry | 68 | 67 |
| Wet | 68 | 71 |
| Snow | – | 71 |
| Comfort | 65 | 65 |
| Noise | – | 68 |
| Treadwear | 64 | 69 |
| Handling (owners) | 60 | – |
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
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Recomputed
Headline score
67
/ 100
Discoverer A/TR
69
/ 100
Roadian AT Pro RA8
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Discoverer A/TR
Pros
- Remarkably low road noise for an all-terrain tire with a deep, chunky tread.
- Excellent wet weather performance and resistance to aquaplaning.
- Long-lasting tread life with high mileage capabilities (some users exceeding 50,000 to 80,000+ kms).
Cons
- Some instances of severe edge chipping and cuts to the steel when used on rough outback gravel roads.
- Tramlining effects in the steering as the tires wear down.
- Off-road capability diminishes noticeably as the tread wears past a certain point.
Tire B Roadian AT Pro RA8
Not enough owner reviews yet to extract themes.
Specs side by side
| Attribute | A · Cooper Discoverer A/TR | B · Nexen Roadian AT Pro RA8 |
|---|---|---|
| Category | All-Terrain tire | All-Terrain tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | — | 39 |
| Rim diameters | — | 15″ – 22″ |
| Tread depth | — | 13/32″ |
| UTQG | — | 560 A B |
| Treadwear warranty | — | 50,000 mi |
| Sidewall | — | Outlined White Lettering |
| Max pressure | — | 51 psi |
Which one should you actually buy?
67
/ 100
Cooper Discoverer A/TR
69
/ 100
Nexen Roadian AT Pro RA8
Narrow edge: Nexen Roadian AT Pro RA8 — better treadwear and wet. Where the Cooper Discoverer A/TR is ahead, it is by less than 3 points. Cooper Discoverer A/TR rests on little evidence so far (0 tests, 11 reviews), so read this result as provisional.
Pick tire B
You want the longest tread life
Nexen Roadian AT Pro RA8 scores 69 vs 64 on treadwear.
Pick tire B
Your priority is wet-weather safety
Nexen Roadian AT Pro RA8 scores 71 vs 68 on wet.
Tire A · Cooper Discoverer A/TR
Tire B · Nexen Roadian AT Pro RA8
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Discoverer A/TR or Roadian AT Pro RA8?
Which is better in the wet, Discoverer A/TR or Roadian AT Pro RA8?
Nexen Roadian AT Pro RA8, 71 vs 68 on our wet score.
Which grips better on dry roads, Discoverer A/TR or Roadian AT Pro RA8?
Neither, by our numbers: 68 vs 67 on the dry score, within 3 points.
Which is more comfortable, Discoverer A/TR or Roadian AT Pro RA8?
Neither, by our numbers: 65 vs 65 on the comfort score, within 3 points.
Which lasts longer, Discoverer A/TR or Roadian AT Pro RA8?
Nexen Roadian AT Pro RA8, 69 vs 64 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