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Head-to-head Updated

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

Discoverer All Season is ahead, 68–59

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Starfire Solarus AS
Tire AStarfire

Solarus AS

All Season

± 8Provisional

Tests – · none yet Owners 54 · 7 reviews

Cooper Discoverer All Season
Tire BCooper

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)

Category by category

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

  1. 62

    Dry

    Discoverer All Season +10
    72
    Why this score
    SourceSolarus ASDiscoverer All Season
    Professional tests (TWG score) · – / 6 tests≈ 64 (est.)73
    Reviews found online5971

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

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

    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. 61

    Wet

    Discoverer All Season +12
    73
    Why this score
    SourceSolarus ASDiscoverer All Season
    Professional tests (TWG score) · – / 6 tests≈ 64 (est.)73
    Reviews found online5874

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

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

    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. 51

    Snow

    Discoverer All Season +1
    52
    Why this score
    SourceSolarus ASDiscoverer All Season
    Professional tests (TWG score) · – / 4 tests≈ 60 (est.)41
    Reviews found online3769

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

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

    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. 57

    Comfort

    Discoverer All Season +10
    67
    Why this score
    SourceSolarus ASDiscoverer All Season
    Professional tests (TWG score)≈ 65 (est.)≈ 68 (est.)
    Reviews found online5266

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

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

    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).

    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).

  5. 64

    Noise

    Discoverer All Season +9
    73
    Why this score
    SourceSolarus ASDiscoverer All Season
    Professional tests (TWG score) · – / 4 tests≈ 66 (est.)77
    Reviews found online60≈ 66 (est.)

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

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

    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.

    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.

  6. 58

    Treadwear

    Discoverer All Season +8
    66
    Why this score
    SourceSolarus ASDiscoverer All Season
    Professional tests (TWG score) · – / 1 tests≈ 62 (est.)64
    Reviews found online5370

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

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

    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. –

    Handling (owners)

    No comparison
    71
    Why this score
    SourceSolarus ASDiscoverer All Season
    Reviews found online–71
  8. –

    Efficiency

    No comparison
    34
    Why this score
    SourceSolarus ASDiscoverer All Season
    Professional tests (TWG score) · – / 4 tests–34
Scores at a glance
CategoryStarfire Solarus ASCooper Discoverer All Season
Relative Score 59 68
Dry 62 72
Wet 61 73
Snow 51 52
Comfort 57 67
Noise 64 73
Treadwear 58 66
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
± 8

Solarus AS

± 6

Discoverer All Season

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 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

Tire B Discoverer All Season

Not enough owner reviews yet to extract themes.

Specs side by side

Attribute A · Starfire Solarus AS B · Cooper Discoverer All Season
CategoryAll SeasonAll Season
Vehicle typePassenger Car / CrossoverSUV and 4x4
Sizes available49—
Rim diameters14″ – 18″—
Tread depth9/32″—
UTQG520 A A—
Treadwear warranty50,000 mi—
SidewallBlackwall—
Max pressure44 psi—

Which one should you actually buy?

Starfire Solarus AS

Cooper Discoverer All Season

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 B Your priority is wet-weather safety

Cooper Discoverer All Season scores 73 vs 61 on wet.

Pick tire B You want the most grip on dry roads

Cooper Discoverer All Season scores 72 vs 62 on dry.

Pick tire B You want the most comfortable ride

Cooper Discoverer All Season scores 67 vs 57 on comfort.

Pick tire B You want a quieter cabin

Cooper Discoverer All Season scores 73 vs 64 on noise.

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

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

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

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

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

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

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

Which is quieter, Solarus AS or Discoverer All Season?

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

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

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

Which lasts longer, Solarus AS or Discoverer All Season?

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