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Head-to-head Updated

Cooper Discoverer All Season vs Starfire Solarus AS — 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 6 + 0 road tests and 1 + 7 owner reviews. How we score

Discoverer All Season is ahead, 68–59

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Cooper Discoverer All Season
Tire ACooper

Discoverer All Season

All Season

± 6

Tests 66 · 6 tests Owners 71 · 1 review

Best test result: #1 of 9 in 2022 ACE/ARBÖ/GTÜ All-Season Tire Test R17 (straight aquaplaning)

Starfire Solarus AS
Tire BStarfire

Solarus AS

All Season

± 8Provisional

Tests – · none yet Owners 54 · 7 reviews

Category by category

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

  1. 72

    Dry

    Discoverer All Season +10
    62
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Professional tests (TWG score) · 6 / – tests73≈ 64 (est.)
    Reviews found online7159

    Discoverer All Season: 60% × 72.9 + 40% × 70.5 = 72

    Solarus AS: 60% × 64.1 (est.) + 40% × 58.7 = 62

    No road tests of dry for Solarus AS. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 73

    Wet

    Discoverer All Season +12
    61
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Professional tests (TWG score) · 6 / – tests73≈ 64 (est.)
    Reviews found online7458

    Discoverer All Season: 60% × 73.2 + 40% × 73.6 = 73

    Solarus AS: 60% × 63.6 (est.) + 40% × 57.7 = 61

    No road tests of wet for Solarus AS. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 52

    Snow

    Discoverer All Season +1
    51
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Professional tests (TWG score) · 4 / – tests41≈ 60 (est.)
    Reviews found online6937

    Discoverer All Season: 60% × 41.2 + 40% × 68.8 = 52

    Solarus AS: 60% × 59.9 (est.) + 40% × 37 = 51

    No road tests of snow for Solarus AS. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 67

    Comfort

    Discoverer All Season +10
    57
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Professional tests (TWG score)≈ 68 (est.)≈ 65 (est.)
    Reviews found online6652

    Discoverer All Season: 40% × 68.2 (est.) + 60% × 65.9 = 67

    Solarus AS: 40% × 65.4 (est.) + 60% × 52.2 = 57

    No road tests of comfort for Discoverer All Season. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.21).

    No road tests of comfort for Solarus AS. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.21).

  5. 73

    Noise

    Discoverer All Season +9
    64
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Professional tests (TWG score) · 4 / – tests77≈ 66 (est.)
    Reviews found online≈ 66 (est.)60

    Discoverer All Season: 60% × 77.1 + 40% × 66.3 (est.) = 73

    Solarus AS: 60% × 66.3 (est.) + 40% × 60.3 = 64

    No owner ratings of noise for Discoverer All Season. The owner half is the owners’ average (66): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

    No road tests of noise for Solarus AS. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 66

    Treadwear

    Discoverer All Season +8
    58
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Professional tests (TWG score) · 1 / – tests64≈ 62 (est.)
    Reviews found online7053

    Discoverer All Season: 60% × 64 + 40% × 70 = 66

    Solarus AS: 60% × 61.7 (est.) + 40% × 53.1 = 58

    No road tests of treadwear for Solarus AS. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 71

    Handling (owners)

    No comparison
    –
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Reviews found online71–
  8. 34

    Efficiency

    No comparison
    –
    Why this score
    SourceDiscoverer All SeasonSolarus AS
    Professional tests (TWG score) · 4 / – tests34–
Scores at a glance
CategoryCooper Discoverer All SeasonStarfire Solarus AS
Relative Score 68 59
Dry 72 62
Wet 73 61
Snow 52 51
Comfort 67 57
Noise 73 64
Treadwear 66 58
Handling (owners) 71 –
Efficiency 34 –

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
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
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.

Not 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
± 6

Discoverer All Season

± 8

Solarus AS

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 All Season

Not enough owner reviews yet to extract themes.

Tire B Solarus AS

Pros

  • Good value, described as 'pretty good tires for the price range'
  • Strong dry-road performance
  • Pleasant driving character, with one owner reporting even wear and a willingness to buy again

Cons

  • Poor snow traction, with snow packing in the treads and turning to ice, leaving little grip
  • Wet-road handling requires caution, with a reviewer advising against speeding and sharp turns in the rain
  • Short tread life, with one owner reporting end-of-life wear (3-4mm) after about 14 months and 17,000 miles, well short of the mileage warranty
All owner themes in the Solarus AS review

Specs side by side

Attribute A · Cooper Discoverer All Season B · Starfire Solarus AS
CategoryAll SeasonAll Season
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available—49
Rim diameters—14″ – 18″
Tread depth—9/32″
UTQG—520 A A
Treadwear warranty—50,000 mi
Sidewall—Blackwall
Max pressure—44 psi

Which one should you actually buy?

Cooper Discoverer All Season

Starfire Solarus AS

Winner: Cooper Discoverer All Season — better wet, dry and comfort. It leads or ties in every category we score. Starfire Solarus AS rests on little evidence so far (0 tests, 7 reviews), so read this result as provisional.

Pick tire A Your priority is wet-weather safety

Cooper Discoverer All Season scores 73 vs 61 on wet.

Pick tire A You want the most grip on dry roads

Cooper Discoverer All Season scores 72 vs 62 on dry.

Pick tire A You want the most comfortable ride

Cooper Discoverer All Season scores 67 vs 57 on comfort.

Pick tire A You want a quieter cabin

Cooper Discoverer All Season scores 73 vs 64 on noise.

Tire A · Cooper Discoverer All Season
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Tire B · Starfire Solarus AS
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Discoverer All Season or Solarus AS?

Which is better in the wet, Discoverer All Season or Solarus AS?

Cooper Discoverer All Season, 73 vs 61 on our wet score.

Which grips better on dry roads, Discoverer All Season or Solarus AS?

Cooper Discoverer All Season, 72 vs 62 on our dry score.

Which is better in snow, Discoverer All Season or Solarus AS?

Neither, by our numbers: 52 vs 51 on the snow score, within 3 points.

Which is quieter, Discoverer All Season or Solarus AS?

Cooper Discoverer All Season, 73 vs 64 on our noise score.

Which is more comfortable, Discoverer All Season or Solarus AS?

Cooper Discoverer All Season, 67 vs 57 on our comfort score.

Which lasts longer, Discoverer All Season or Solarus AS?

Cooper Discoverer All Season, 66 vs 58 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