Tests 74 · 1 test Owners 79 · 177 reviews
Head-to-head
Updated
Pirelli Diablo Rosso IV vs Pirelli Scorpion Trail II — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Diablo Rosso IV is ahead, 76–69
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Tests – · none yet Owners 69 · 9 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
76
Dry
Diablo Rosso IV +571Why this score
Source Diablo Rosso IV Scorpion Trail II Professional tests (TWG score) 68 – Reviews found online 87 72 -
79
Wet
Diablo Rosso IV +1168Why this score
Source Diablo Rosso IV Scorpion Trail II Professional tests (TWG score) 79 – Reviews found online 80 67 -
75
Comfort
Diablo Rosso IV +669Why this score
Source Diablo Rosso IV Scorpion Trail II Reviews found online 81 70 -
66
Treadwear
Diablo Rosso IV +264Why this score
Source Diablo Rosso IV Scorpion Trail II Reviews found online 66 63 -
87
Handling
Diablo Rosso IV +1473Why this score
Source Diablo Rosso IV Scorpion Trail II Reviews found online 87 73
Scores at a glance
| Category | Pirelli Diablo Rosso IV | Pirelli Scorpion Trail II |
|---|---|---|
| Relative Score | 76 | 69 |
| Dry | 76 | 71 |
| Wet | 79 | 68 |
| Comfort | 75 | 69 |
| Treadwear | 66 | 64 |
| Handling | 87 | 73 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
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Recomputed
Headline score
76
/ 100
Diablo Rosso IV
69
/ 100
Scorpion Trail II
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A 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
Tire B Scorpion Trail II
Pros
- Excellent grip and confidence on dry pavement
- Strong performance on light off-road trails and varied surfaces like gravel and dirt
- Quick warm-up time in favorable conditions
Cons
- Poor wet-weather performance and susceptibility to hydroplaning
- Twitchy or unstable handling characteristics in rain
- Rapid tread wear and premature flattening
Specs side by side
| Attribute | A · Pirelli Diablo Rosso IV | B · Pirelli Scorpion Trail II |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Motorcycle | Motorcycle |
Which one should you actually buy?
76
/ 100
Pirelli Diablo Rosso IV
69
/ 100
Pirelli Scorpion Trail II
Winner: Pirelli Diablo Rosso IV — better handling, wet and comfort. It leads or ties in every category we score.
Pick tire A
You enjoy sharp, responsive handling
Pirelli Diablo Rosso IV scores 87 vs 73 on handling.
Pick tire A
Your priority is wet-weather safety
Pirelli Diablo Rosso IV scores 79 vs 68 on wet.
Pick tire A
You want the most comfortable ride
Pirelli Diablo Rosso IV scores 75 vs 69 on comfort.
Pick tire A
You want the most grip on dry roads
Pirelli Diablo Rosso IV scores 76 vs 71 on dry.
Tire A · Pirelli Diablo Rosso IV
Tire B · Pirelli Scorpion Trail II
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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.
Community buzz from Reddit and forums is shown for context only — it never changes the score.