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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

Nexen Roadian AT Pro RA8 vs Cooper Discoverer A/TR — 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 + 0 road tests and 70 + 11 owner reviews. How we score

Roadian AT Pro RA8 leads, 69–67 Narrow edge

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Cooper Discoverer A/TR
Tire BCooper

Discoverer A/TR

All-Terrain tire

± 8Provisional

Tests – · none yet Owners 65 · 11 reviews

Category by category

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

  1. 67

    Dry

    Discoverer A/TR +1
    68
    Why this score
    SourceRoadian AT Pro RA8Discoverer A/TR
    Professional tests (TWG score)≈ 68 (est.)≈ 68 (est.)
    Reviews found online6768

    Roadian AT Pro RA8: 60% × 67.5 (est.) + 40% × 66.7 = 67

    Discoverer A/TR: 60% × 68 (est.) + 40% × 67.8 = 68

    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).

    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).

  2. 71

    Wet

    Roadian AT Pro RA8 +3
    68
    Why this score
    SourceRoadian AT Pro RA8Discoverer A/TR
    Professional tests (TWG score)≈ 71 (est.)≈ 69 (est.)
    Reviews found online7168

    Roadian AT Pro RA8: 60% × 70.6 (est.) + 40% × 70.5 = 71

    Discoverer A/TR: 60% × 69 (est.) + 40% × 67.6 = 68

    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).

    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).

  3. 71

    Snow

    No comparison
    –
    Why this score
    SourceRoadian AT Pro RA8Discoverer A/TR
    Professional tests (TWG score)≈ 71 (est.)–
    Reviews found online71–

    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).

  4. 65

    Comfort

    Level
    65
    Why this score
    SourceRoadian AT Pro RA8Discoverer A/TR
    Professional tests (TWG score)≈ 68 (est.)≈ 68 (est.)
    Reviews found online6363

    Roadian AT Pro RA8: 40% × 68.1 (est.) + 60% × 63.4 = 65

    Discoverer A/TR: 40% × 68.1 (est.) + 60% × 63.4 = 65

    No road tests of comfort for Roadian AT Pro RA8 or Discoverer A/TR. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 68

    Noise

    No comparison
    –
    Why this score
    SourceRoadian AT Pro RA8Discoverer A/TR
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online71–

    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.

  6. 69

    Treadwear

    Roadian AT Pro RA8 +5
    64
    Why this score
    SourceRoadian AT Pro RA8Discoverer A/TR
    Professional tests (TWG score) · 1 / – tests67≈ 65 (est.)
    Reviews found online7362

    Roadian AT Pro RA8: 60% × 66.8 + 40% × 73.3 = 69

    Discoverer A/TR: 60% × 64.7 (est.) + 40% × 61.9 = 64

    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).

  7. –

    Handling (owners)

    No comparison
    60
    Why this score
    SourceRoadian AT Pro RA8Discoverer A/TR
    Reviews found online–60
Scores at a glance
CategoryNexen Roadian AT Pro RA8Cooper Discoverer A/TR
Relative Score 69 67
Dry 67 68
Wet 71 68
Snow 71 –
Comfort 65 65
Noise 68 –
Treadwear 69 64
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
± 9

Roadian AT Pro RA8

± 8

Discoverer A/TR

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 Roadian AT Pro RA8

Not enough owner reviews yet to extract themes.

Tire B 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.
All owner themes in the Discoverer A/TR review

Specs side by side

Attribute A · Nexen Roadian AT Pro RA8 B · Cooper Discoverer A/TR
CategoryAll-Terrain tireAll-Terrain tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available39—
Rim diameters15″ – 22″—
Tread depth13/32″—
UTQG560 A B—
Treadwear warranty50,000 mi—
SidewallOutlined White Lettering—
Max pressure51 psi—

Which one should you actually buy?

Nexen Roadian AT Pro RA8

Cooper Discoverer A/TR

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 A You want the longest tread life

Nexen Roadian AT Pro RA8 scores 69 vs 64 on treadwear.

Pick tire A Your priority is wet-weather safety

Nexen Roadian AT Pro RA8 scores 71 vs 68 on wet.

Tire A · Nexen Roadian AT Pro RA8
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Tire B · Cooper Discoverer A/TR
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Roadian AT Pro RA8 or Discoverer A/TR?

Which is better in the wet, Roadian AT Pro RA8 or Discoverer A/TR?

Nexen Roadian AT Pro RA8, 71 vs 68 on our wet score.

Which grips better on dry roads, Roadian AT Pro RA8 or Discoverer A/TR?

Neither, by our numbers: 67 vs 68 on the dry score, within 3 points.

Which is more comfortable, Roadian AT Pro RA8 or Discoverer A/TR?

Neither, by our numbers: 65 vs 65 on the comfort score, within 3 points.

Which lasts longer, Roadian AT Pro RA8 or Discoverer A/TR?

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