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Dunlop SP Winter Sport M3 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Dunlop SP Winter Sport M3 vs Toyo Observe GSi-6 HP — 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 + 2 road tests and 12 + 14 owner reviews. How we score

SP Winter Sport M3 leads, 77–73 Narrow edge

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Toyo Observe GSi-6 HP
Tire BToyo

Observe GSi-6 HP

Winter

± 6

Tests 69 · 2 tests Owners 73 · 14 reviews

Best test result: #5 of 20 in 2020 Nordic and Studded Winter Tyre Test (dry braking)

Category by category

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

  1. 74

    Dry

    Observe GSi-6 HP +1
    75
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Professional tests (TWG score) · – / 1 tests≈ 72 (est.)73
    Reviews found online7777

    SP Winter Sport M3: 60% × 71.8 (est.) + 40% × 77.4 = 74

    Observe GSi-6 HP: 60% × 73 + 40% × 76.9 = 75

    No road tests of dry for SP Winter Sport M3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 82

    Wet

    SP Winter Sport M3 +7
    75
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Professional tests (TWG score) · – / 2 tests≈ 79 (est.)71
    Reviews found online8681

    SP Winter Sport M3: 60% × 79 (est.) + 40% × 85.9 = 82

    Observe GSi-6 HP: 60% × 71.5 + 40% × 80.8 = 75

    No road tests of wet for SP Winter Sport M3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. –

    Snow

    No comparison
    66
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Professional tests (TWG score) · – / 2 tests–60
    Reviews found online–75

    Observe GSi-6 HP: 60% × 59.5 + 40% × 74.7 = 66

  4. 74

    Comfort

    Observe GSi-6 HP +1
    75
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Professional tests (TWG score) · – / 1 tests≈ 70 (est.)77
    Reviews found online7774

    SP Winter Sport M3: 40% × 70.2 (est.) + 60% × 76.5 = 74

    Observe GSi-6 HP: 40% × 76.7 + 60% × 73.9 = 75

    No road tests of comfort for SP Winter Sport M3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. –

    Noise

    No comparison
    70
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Professional tests (TWG score) · – / 1 tests–72
    Reviews found online–≈ 66 (est.)

    Observe GSi-6 HP: 60% × 71.6 + 40% × 66.4 (est.) = 70

    No owner ratings of noise for Observe GSi-6 HP. 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. 75

    Treadwear

    SP Winter Sport M3 +13
    62
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Professional tests (TWG score)≈ 71 (est.)≈ 64 (est.)
    Reviews found online8059

    SP Winter Sport M3: 60% × 71.2 (est.) + 40% × 79.6 = 75

    Observe GSi-6 HP: 60% × 63.6 (est.) + 40% × 58.5 = 62

    No road tests of treadwear for SP Winter Sport M3. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

    No road tests of treadwear for Observe GSi-6 HP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 81

    Handling (owners)

    SP Winter Sport M3 +6
    75
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Reviews found online8175
  8. –

    Efficiency

    No comparison
    66
    Why this score
    SourceSP Winter Sport M3Observe GSi-6 HP
    Professional tests (TWG score) · – / 1 tests–66
Scores at a glance
CategoryDunlop SP Winter Sport M3Toyo Observe GSi-6 HP
Relative Score 77 73
Dry 74 75
Wet 82 75
Snow – 66
Comfort 74 75
Noise – 70
Treadwear 75 62
Handling (owners) 81 75
Efficiency – 66

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
Important
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
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

SP Winter Sport M3

± 6

Observe GSi-6 HP

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 SP Winter Sport M3

Pros

  • Exceptional grip and traction in deep, fresh, and compacted snow
  • Impressive performance on ice and slippery inclines
  • Sporty, responsive handling on dry roads comparable to summer tires

Cons

  • Accelerated wear if left on during warmer summer months
  • Slightly slippery under heavy braking on dry roads until fully warmed up
All owner themes in the SP Winter Sport M3 review

Tire B Observe GSi-6 HP

Pros

  • Exceptional traction and stability in snow and slush
  • Impressive wet-weather performance and hydroplaning resistance
  • Remarkably quiet ride quality for a winter tire

Cons

  • Inconsistent tread life reports, with some users experiencing premature wear
  • Occasional reports of structural failure or tread separation
  • Slightly vague steering feel at lower speeds
All owner themes in the Observe GSi-6 HP review

Specs side by side

Attribute A · Dunlop SP Winter Sport M3 B · Toyo Observe GSi-6 HP
CategoryWinterWinter
Vehicle typePassenger Car / Crossover—
Sizes available—39
Rim diameters—16″ – 21″
Tread depth—11 - 12/32″
Sidewall—Black Side Wall
Max pressure—50 - 51 psi

Which one should you actually buy?

Dunlop SP Winter Sport M3

Toyo Observe GSi-6 HP

Narrow edge: Dunlop SP Winter Sport M3 — better treadwear, wet and handling. Where the Toyo Observe GSi-6 HP is ahead, it is by less than 3 points. Dunlop SP Winter Sport M3 rests on little evidence so far (0 tests, 12 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

Dunlop SP Winter Sport M3 scores 75 vs 62 on treadwear.

Pick tire A Your priority is wet-weather safety

Dunlop SP Winter Sport M3 scores 82 vs 75 on wet.

Pick tire A You enjoy sharp, responsive handling

Dunlop SP Winter Sport M3 scores 81 vs 75 on handling.

Tire A · Dunlop SP Winter Sport M3
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Tire B · Toyo Observe GSi-6 HP
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SP Winter Sport M3 or Observe GSi-6 HP?

Which is better in the wet, SP Winter Sport M3 or Observe GSi-6 HP?

Dunlop SP Winter Sport M3, 82 vs 75 on our wet score.

Which grips better on dry roads, SP Winter Sport M3 or Observe GSi-6 HP?

Neither, by our numbers: 74 vs 75 on the dry score, within 3 points.

Which is more comfortable, SP Winter Sport M3 or Observe GSi-6 HP?

Neither, by our numbers: 74 vs 75 on the comfort score, within 3 points.

Which lasts longer, SP Winter Sport M3 or Observe GSi-6 HP?

Dunlop SP Winter Sport M3, 75 vs 62 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