Tests – · none yet Owners 46 · 8 reviews
Head-to-head
Updated
Dunlop ScootSmart vs Pirelli Diablo Rosso IV — 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 + 1 road tests and 8 + 181 owner reviews. How we score
Diablo Rosso IV is ahead, 80–52
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Tests 75 · 1 test Owners 85 · 181 reviews
Best test result: #5 of 12 in 2025 Sport and Hypersport Motorcycle Tyre Test (wet handling)
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
56
Dry
Diablo Rosso IV +2177Why this score
Source ScootSmart Diablo Rosso IV Professional tests (TWG score) · – / 1 tests ≈ 60 (est.) 68 Reviews found online 50 92 ScootSmart: 60% × 60.5 (est.) + 40% × 50 = 56
Diablo Rosso IV: 60% × 67.8 + 40% × 91.9 = 77
No road tests of dry for ScootSmart. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
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49
Wet
Diablo Rosso IV +3584Why this score
Source ScootSmart Diablo Rosso IV Professional tests (TWG score) · – / 1 tests ≈ 55 (est.) 82 Reviews found online 42 87 ScootSmart: 60% × 54.6 (est.) + 40% × 41.5 = 49
Diablo Rosso IV: 60% × 81.7 + 40% × 87.1 = 84
No road tests of wet for ScootSmart. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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53
Comfort
Diablo Rosso IV +2780Why this score
Source ScootSmart Diablo Rosso IV Professional tests (TWG score) ≈ 65 (est.) ≈ 72 (est.) Reviews found online 46 85 ScootSmart: 40% × 64.8 (est.) + 60% × 45.8 = 53
Diablo Rosso IV: 40% × 72.1 (est.) + 60% × 85.3 = 80
No road tests of comfort for ScootSmart or Diablo Rosso IV. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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56
Treadwear
Diablo Rosso IV +1571Why this score
Source ScootSmart Diablo Rosso IV Professional tests (TWG score) ≈ 61 (est.) ≈ 69 (est.) Reviews found online 50 74 ScootSmart: 60% × 60.5 (est.) + 40% × 50 = 56
Diablo Rosso IV: 60% × 69 (est.) + 40% × 74.4 = 71
No road tests of treadwear for ScootSmart. 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 Diablo Rosso IV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
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40
Handling (owners)
Diablo Rosso IV +5191Why this score
Source ScootSmart Diablo Rosso IV Reviews found online 40 91
Scores at a glance
| Category | Dunlop ScootSmart | Pirelli Diablo Rosso IV |
|---|---|---|
| Relative Score | 52 | 80 |
| Dry | 56 | 77 |
| Wet | 49 | 84 |
| Comfort | 53 | 80 |
| Treadwear | 56 | 71 |
| Handling (owners) | 40 | 91 |
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
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
52
/ 100
ScootSmart
80
/ 100
Diablo Rosso IV
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A ScootSmart
Pros
- Strong grip and predictable handling in dry conditions
- Impressive tread longevity and wear resistance
- Sporty handling characteristics that inspire confidence in fair weather
Cons
- Poor traction and frequent slippage on wet surfaces
- High susceptibility to punctures from small debris
- Harsh ride quality that transmits road imperfections
Tire B Diablo Rosso IV
Pros
- Exceptional dry and wet grip with a high level of rider confidence
- Fast warm-up time and predictable handling at deep lean angles
- Improved steering precision and turn-in compared to previous generations like the Diablo Rosso III
Cons
- Higher price point compared to some competitors and previous models
- Noticeable reduction in grip and increased rear wheel spin as the tires wear down
- Requires full operating temperature for optimal performance late in its life cycle
Specs side by side
| Attribute | A · Dunlop ScootSmart | B · Pirelli Diablo Rosso IV |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Motorcycle | Motorcycle |
Which one should you actually buy?
52
/ 100
Dunlop ScootSmart
80
/ 100
Pirelli Diablo Rosso IV
Winner: Pirelli Diablo Rosso IV — better handling, wet and comfort. It leads or ties in every category we score. Dunlop ScootSmart rests on little evidence so far (0 tests, 8 reviews), so read this result as provisional.
Pick tire B
You enjoy sharp, responsive handling
Pirelli Diablo Rosso IV scores 91 vs 40 on handling.
Pick tire B
Your priority is wet-weather safety
Pirelli Diablo Rosso IV scores 84 vs 49 on wet.
Pick tire B
You want the most comfortable ride
Pirelli Diablo Rosso IV scores 80 vs 53 on comfort.
Pick tire B
You want the most grip on dry roads
Pirelli Diablo Rosso IV scores 77 vs 56 on dry.
Tire A · Dunlop ScootSmart
Tire B · Pirelli Diablo Rosso IV
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ScootSmart or Diablo Rosso IV?
Which is better in the wet, ScootSmart or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 84 vs 49 on our wet score.
Which grips better on dry roads, ScootSmart or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 77 vs 56 on our dry score.
Which is more comfortable, ScootSmart or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 80 vs 53 on our comfort score.
Which lasts longer, ScootSmart or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 71 vs 56 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