Tests 72 · 1 test Owners 85 · 16 reviews
Best test result: #3 of 6 in 2020 Motorcycle Sports Touring Tyre Test (dry braking)
Pirelli Diablo Rosso looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Dunlop RoadSmart III vs Pirelli Diablo Rosso — 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 1 + 0 road tests and 16 + 5 owner reviews. How we score
RoadSmart III is ahead, 80–53
Add your size for an exact match
/R
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Tests – · none yet Owners 46 · 5 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
78
Dry
RoadSmart III +2355Why this score
Source RoadSmart III Diablo Rosso Professional tests (TWG score) · 1 / – tests 72 ≈ 59 (est.) Reviews found online 86 48 RoadSmart III: 60% × 72.1 + 40% × 85.9 = 78
Diablo Rosso: 60% × 59.5 (est.) + 40% × 47.6 = 55
No road tests of dry for Diablo Rosso. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
83
Wet
RoadSmart III +3548Why this score
Source RoadSmart III Diablo Rosso Professional tests (TWG score) ≈ 80 (est.) ≈ 53 (est.) Reviews found online 88 39 RoadSmart III: 60% × 80.1 (est.) + 40% × 87.6 = 83
Diablo Rosso: 60% × 53.3 (est.) + 40% × 39.1 = 48
No road tests of wet for RoadSmart III. 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 Diablo Rosso. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
78
Comfort
RoadSmart III +2157Why this score
Source RoadSmart III Diablo Rosso Professional tests (TWG score) ≈ 72 (est.) ≈ 66 (est.) Reviews found online 83 51 RoadSmart III: 40% × 71.6 (est.) + 60% × 82.5 = 78
Diablo Rosso: 40% × 65.8 (est.) + 60% × 50.7 = 57
No road tests of comfort for RoadSmart III or Diablo Rosso. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
76
Treadwear
RoadSmart III +1957Why this score
Source RoadSmart III Diablo Rosso Professional tests (TWG score) ≈ 72 (est.) ≈ 61 (est.) Reviews found online 82 51 RoadSmart III: 60% × 71.8 (est.) + 40% × 82.3 = 76
Diablo Rosso: 60% × 60.9 (est.) + 40% × 51.2 = 57
No road tests of treadwear for RoadSmart III. 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. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
87
Handling (owners)
RoadSmart III +4146Why this score
Source RoadSmart III Diablo Rosso Reviews found online 87 46
Scores at a glance
| Category | Dunlop RoadSmart III | Pirelli Diablo Rosso |
|---|---|---|
| Relative Score | 80 | 53 |
| Dry | 78 | 55 |
| Wet | 83 | 48 |
| Comfort | 78 | 57 |
| Treadwear | 76 | 57 |
| Handling (owners) | 87 | 46 |
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
80
/ 100
RoadSmart III
53
/ 100
Diablo Rosso
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A RoadSmart III
Pros
- Exceptional tread life and mileage compared to dedicated sport tires.
- Sharp, responsive steering and handling characteristics.
- Consistent and reliable grip in both dry and wet road conditions.
Cons
- Occasional reports of rear-end slippage during aggressive cornering with power input.
- Front tire wear can be uneven or faster than expected depending on suspension setup.
- Some users noted a firm ride quality due to the stiff carcass construction.
Tire B Diablo Rosso
Pros
- Excellent grip and handling in warm, dry conditions
- Predictable and neutral steering characteristics
- Strong performance on smaller displacement vehicles and scooters
Cons
- Sudden and unpredictable loss of traction in cold or wet conditions
- Poor performance and safety concerns during rain
- Inconsistent tread wear patterns
Specs side by side
| Attribute | A · Dunlop RoadSmart III | B · Pirelli Diablo Rosso |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Motorcycle | Motorcycle |
Which one should you actually buy?
80
/ 100
Dunlop RoadSmart III
53
/ 100
Pirelli Diablo Rosso
Winner: Dunlop RoadSmart III — better handling, wet and dry. It leads or ties in every category we score. Dunlop RoadSmart III rests on little evidence so far (1 test, 16 reviews), so read this result as provisional. Pirelli Diablo Rosso rests on little evidence so far (0 tests, 5 reviews), so read this result as provisional.
Pick tire A
You enjoy sharp, responsive handling
Dunlop RoadSmart III scores 87 vs 46 on handling.
Pick tire A
Your priority is wet-weather safety
Dunlop RoadSmart III scores 83 vs 48 on wet.
Pick tire A
You want the most grip on dry roads
Dunlop RoadSmart III scores 78 vs 55 on dry.
Pick tire A
You want the most comfortable ride
Dunlop RoadSmart III scores 78 vs 57 on comfort.
Tire A · Dunlop RoadSmart III
Tire B · Pirelli Diablo Rosso
TireWheelGuide may earn a commission from purchases made through these links.
RoadSmart III or Diablo Rosso?
Which is better in the wet, RoadSmart III or Diablo Rosso?
Dunlop RoadSmart III, 83 vs 48 on our wet score.
Which grips better on dry roads, RoadSmart III or Diablo Rosso?
Dunlop RoadSmart III, 78 vs 55 on our dry score.
Which is more comfortable, RoadSmart III or Diablo Rosso?
Dunlop RoadSmart III, 78 vs 57 on our comfort score.
Which lasts longer, RoadSmart III or Diablo Rosso?
Dunlop RoadSmart III, 76 vs 57 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