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Head-to-head Updated

Dunlop SP Winter Sport 4D vs Firestone Winterforce 2 UV — 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 + 0 road tests and 38 + 17 owner reviews. How we score

SP Winter Sport 4D is ahead, 78–68

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Category by category

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

  1. 79

    Dry

    SP Winter Sport 4D +13
    66
    Why this score
    SourceSP Winter Sport 4DWinterforce 2 UV
    Professional tests (TWG score)≈ 75 (est.)≈ 67 (est.)
    Reviews found online8464

    SP Winter Sport 4D: 60% × 74.9 (est.) + 40% × 84.2 = 79

    Winterforce 2 UV: 60% × 66.5 (est.) + 40% × 64.4 = 66

    No road tests of dry for SP Winter Sport 4D. 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 Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 84

    Wet

    SP Winter Sport 4D +13
    71
    Why this score
    SourceSP Winter Sport 4DWinterforce 2 UV
    Professional tests (TWG score)≈ 81 (est.)≈ 71 (est.)
    Reviews found online8971

    SP Winter Sport 4D: 60% × 81 (est.) + 40% × 89.2 = 84

    Winterforce 2 UV: 60% × 70.7 (est.) + 40% × 70.6 = 71

    No road tests of wet for SP Winter Sport 4D. 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 Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 71

    Snow

    Winterforce 2 UV +2
    73
    Why this score
    SourceSP Winter Sport 4DWinterforce 2 UV
    Professional tests (TWG score)≈ 71 (est.)≈ 72 (est.)
    Reviews found online7174

    SP Winter Sport 4D: 60% × 70.8 (est.) + 40% × 70.9 = 71

    Winterforce 2 UV: 60% × 71.8 (est.) + 40% × 73.6 = 73

    No road tests of snow for SP Winter Sport 4D. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).

    No road tests of snow for Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).

  4. 80

    Comfort

    SP Winter Sport 4D +18
    62
    Why this score
    SourceSP Winter Sport 4DWinterforce 2 UV
    Professional tests (TWG score)≈ 72 (est.)≈ 67 (est.)
    Reviews found online8558

    SP Winter Sport 4D: 40% × 72 (est.) + 60% × 85.1 = 80

    Winterforce 2 UV: 40% × 67.1 (est.) + 60% × 58 = 62

    No road tests of comfort for SP Winter Sport 4D or Winterforce 2 UV. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. –

    Noise

    No comparison
    62
    Why this score
    SourceSP Winter Sport 4DWinterforce 2 UV
    Professional tests (TWG score)–≈ 67 (est.)
    Reviews found online–55

    Winterforce 2 UV: 60% × 66.6 (est.) + 40% × 54.5 = 62

    No road tests of noise for Winterforce 2 UV. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 76

    Treadwear

    SP Winter Sport 4D +15
    61
    Why this score
    SourceSP Winter Sport 4DWinterforce 2 UV
    Professional tests (TWG score)≈ 72 (est.)≈ 63 (est.)
    Reviews found online8259

    SP Winter Sport 4D: 60% × 71.6 (est.) + 40% × 81.7 = 76

    Winterforce 2 UV: 60% × 63.4 (est.) + 40% × 58.5 = 61

    No road tests of treadwear for SP Winter Sport 4D. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).

    No road tests of treadwear for Winterforce 2 UV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).

  7. 85

    Handling (owners)

    No comparison
    –
    Why this score
    SourceSP Winter Sport 4DWinterforce 2 UV
    Reviews found online85–
Scores at a glance
CategoryDunlop SP Winter Sport 4DFirestone Winterforce 2 UV
Relative Score 78 68
Dry 79 66
Wet 84 71
Snow 71 73
Comfort 80 62
Noise – 62
Treadwear 76 61
Handling (owners) 85 –

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
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
± 8

SP Winter Sport 4D

± 8

Winterforce 2 UV

Only categories both tires have data for count toward the headline score.

The professional test results behind the scores

Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.

DisciplineCategorySP Winter Sport 4DWinterforce 2 UVΔHead-to-head
Also published by the testers (not in the score)
Overall Ranking Overall #3/48 2014 50 Winter Tyre Braking Overview #8/8 2022 Consumer Reports Winter/Snow Truck/SUV Tires – Different tests

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A SP Winter Sport 4D

Pros

  • Exceptional grip and stability in wet, slushy, and cold dry conditions.
  • Remarkably low road noise, often quieter than summer tire counterparts.
  • High level of ride comfort and refined road manners.

Cons

  • Noticeable 'squirm' or lack of sharpness during high-speed cornering.
  • Occasional reports of understeer in specific wet or icy conditions.
  • Some users noted a 'hard' ride quality compared to previous iterations like the 3D.
All owner themes in the SP Winter Sport 4D review

Tire B Winterforce 2 UV

Not enough owner reviews yet to extract themes.

Specs side by side

Attribute A · Dunlop SP Winter Sport 4D B · Firestone Winterforce 2 UV
CategoryWinterWinter tire
Vehicle typePassenger Car / CrossoverSUV and 4x4
Sizes available2030
Rim diameters16″ – 21″15″ – 18″
Tread depth—12/32″
Sidewall—Blackwall
Max pressure—44 psi
Sizes in common11

Which one should you actually buy?

Dunlop SP Winter Sport 4D

Firestone Winterforce 2 UV

Winner: Dunlop SP Winter Sport 4D — better comfort, treadwear and dry. Where the Firestone Winterforce 2 UV is ahead, it is by less than 3 points. Firestone Winterforce 2 UV rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional.

Pick tire A You want the most comfortable ride

Dunlop SP Winter Sport 4D scores 80 vs 62 on comfort.

Pick tire A You want the longest tread life

Dunlop SP Winter Sport 4D scores 76 vs 61 on treadwear.

Pick tire A You want the most grip on dry roads

Dunlop SP Winter Sport 4D scores 79 vs 66 on dry.

Pick tire A Your priority is wet-weather safety

Dunlop SP Winter Sport 4D scores 84 vs 71 on wet.

Tire A · Dunlop SP Winter Sport 4D
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Tire B · Firestone Winterforce 2 UV
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SP Winter Sport 4D or Winterforce 2 UV?

Which is better in the wet, SP Winter Sport 4D or Winterforce 2 UV?

Dunlop SP Winter Sport 4D, 84 vs 71 on our wet score.

Which grips better on dry roads, SP Winter Sport 4D or Winterforce 2 UV?

Dunlop SP Winter Sport 4D, 79 vs 66 on our dry score.

Which is better in snow, SP Winter Sport 4D or Winterforce 2 UV?

Neither, by our numbers: 71 vs 73 on the snow score, within 3 points.

Which is more comfortable, SP Winter Sport 4D or Winterforce 2 UV?

Dunlop SP Winter Sport 4D, 80 vs 62 on our comfort score.

Which lasts longer, SP Winter Sport 4D or Winterforce 2 UV?

Dunlop SP Winter Sport 4D, 76 vs 61 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