Tests – · none yet Owners 81 · 6 reviews
Head-to-head
Updated
Michelin Power GP 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 6 + 181 owner reviews. How we score
Diablo Rosso IV leads, 80–78 Narrow edge
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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.
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80
Dry
Power GP +377Why this score
Source Power GP Diablo Rosso IV Professional tests (TWG score) · – / 1 tests ≈ 76 (est.) 68 Reviews found online 86 92 Power GP: 60% × 75.7 (est.) + 40% × 86.2 = 80
Diablo Rosso IV: 60% × 67.8 + 40% × 91.9 = 77
No road tests of dry for Power GP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
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77
Wet
Diablo Rosso IV +784Why this score
Source Power GP Diablo Rosso IV Professional tests (TWG score) · – / 1 tests ≈ 76 (est.) 82 Reviews found online 80 87 Power GP: 60% × 75.7 (est.) + 40% × 79.7 = 77
Diablo Rosso IV: 60% × 81.7 + 40% × 87.1 = 84
No road tests of wet for Power GP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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78
Comfort
Diablo Rosso IV +280Why this score
Source Power GP Diablo Rosso IV Professional tests (TWG score) ≈ 71 (est.) ≈ 72 (est.) Reviews found online 82 85 Power GP: 40% × 71.4 (est.) + 60% × 81.7 = 78
Diablo Rosso IV: 40% × 72.1 (est.) + 60% × 85.3 = 80
No road tests of comfort for Power GP or Diablo Rosso IV. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
72
Treadwear
Power GP +171Why this score
Source Power GP Diablo Rosso IV Professional tests (TWG score) ≈ 69 (est.) ≈ 69 (est.) Reviews found online 75 74 Power GP: 60% × 69.3 (est.) + 40% × 75.3 = 72
Diablo Rosso IV: 60% × 69 (est.) + 40% × 74.4 = 71
No road tests of treadwear for Power GP. 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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85
Handling (owners)
Diablo Rosso IV +691Why this score
Source Power GP Diablo Rosso IV Reviews found online 85 91
Scores at a glance
| Category | Michelin Power GP | Pirelli Diablo Rosso IV |
|---|---|---|
| Relative Score | 78 | 80 |
| Dry | 80 | 77 |
| Wet | 77 | 84 |
| Comfort | 78 | 80 |
| Treadwear | 72 | 71 |
| Handling (owners) | 85 | 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
78
/ 100
Power GP
80
/ 100
Diablo Rosso IV
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Power GP
Pros
- Rapid warm-up time providing immediate confidence
- Exceptional dry grip and predictable feedback
- Superior performance in damp or wet conditions compared to competitors
Cons
- Limited tread life, with some users reporting replacement intervals between 5,000 and 6,000 kilometers
- Potential for uneven wear or cupping on the tire edges
- High performance focus may not suit riders prioritizing maximum longevity
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 · Michelin Power GP | B · Pirelli Diablo Rosso IV |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Motorcycle | Motorcycle |
Which one should you actually buy?
78
/ 100
Michelin Power GP
80
/ 100
Pirelli Diablo Rosso IV
Narrow edge: Pirelli Diablo Rosso IV — better wet and handling. Pick the Michelin Power GP if dry matters most to you. Michelin Power GP rests on little evidence so far (0 tests, 6 reviews), so read this result as provisional.
Pick tire B
Your priority is wet-weather safety
Pirelli Diablo Rosso IV scores 84 vs 77 on wet.
Pick tire B
You enjoy sharp, responsive handling
Pirelli Diablo Rosso IV scores 91 vs 85 on handling.
Pick tire A
You want the most grip on dry roads
Michelin Power GP scores 80 vs 77 on dry.
Tire A · Michelin Power GP
Tire B · Pirelli Diablo Rosso IV
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Power GP or Diablo Rosso IV?
Which is better in the wet, Power GP or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 84 vs 77 on our wet score.
Which grips better on dry roads, Power GP or Diablo Rosso IV?
Michelin Power GP, 80 vs 77 on our dry score.
Which is more comfortable, Power GP or Diablo Rosso IV?
Neither, by our numbers: 78 vs 80 on the comfort score, within 3 points.
Which lasts longer, Power GP or Diablo Rosso IV?
Neither, by our numbers: 72 vs 71 on the treadwear score, within 3 points.
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