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Head-to-head Updated

Michelin Pilot Road 4 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 19 + 182 owner reviews. How we score

Diablo Rosso IV leads, 77–74 Narrow edge

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Michelin Pilot Road 4
Tire AMichelin

Pilot Road 4

Summer

± 8Provisional

Tests – · none yet Owners 76 · 19 reviews

Pirelli Diablo Rosso IV
Tire BPirelli

Diablo Rosso IV

Summer

± 7

Tests 75 · 1 test Owners 81 · 182 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.

  1. 73

    Dry

    Diablo Rosso IV +2
    75
    Why this score
    SourcePilot Road 4Diablo Rosso IV
    Professional tests (TWG score) · – / 1 tests≈ 71 (est.)68
    Reviews found online7686

    Pilot Road 4: 60% × 71.3 (est.) + 40% × 76.1 = 73

    Diablo Rosso IV: 60% × 67.8 + 40% × 86.3 = 75

    No road tests of dry for Pilot Road 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 78

    Wet

    Diablo Rosso IV +4
    82
    Why this score
    SourcePilot Road 4Diablo Rosso IV
    Professional tests (TWG score) · – / 1 tests≈ 76 (est.)81
    Reviews found online8183

    Pilot Road 4: 60% × 76.1 (est.) + 40% × 80.5 = 78

    Diablo Rosso IV: 60% × 81.4 + 40% × 82.5 = 82

    No road tests of wet for Pilot Road 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 73

    Comfort

    Diablo Rosso IV +3
    76
    Why this score
    SourcePilot Road 4Diablo Rosso IV
    Professional tests (TWG score)≈ 70 (est.)≈ 71 (est.)
    Reviews found online7580

    Pilot Road 4: 40% × 69.9 (est.) + 60% × 74.8 = 73

    Diablo Rosso IV: 40% × 70.9 (est.) + 60% × 80.1 = 76

    No road tests of comfort for Pilot Road 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

    No road tests of comfort for Diablo Rosso IV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  4. 70

    Treadwear

    Level
    70
    Why this score
    SourcePilot Road 4Diablo Rosso IV
    Professional tests (TWG score)≈ 69 (est.)≈ 68 (est.)
    Reviews found online7371

    Pilot Road 4: 60% × 68.8 (est.) + 40% × 72.7 = 70

    Diablo Rosso IV: 60% × 68.3 (est.) + 40% × 71.4 = 70

    No road tests of treadwear for Pilot Road 4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

    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 0.36).

  5. 75

    Handling (owners)

    Diablo Rosso IV +11
    86
    Why this score
    SourcePilot Road 4Diablo Rosso IV
    Reviews found online7586
Scores at a glance
CategoryMichelin Pilot Road 4Pirelli Diablo Rosso IV
Relative Score 74 77
Dry 73 75
Wet 78 82
Comfort 73 76
Treadwear 70 70
Handling (owners) 75 86

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
± 8

Pilot Road 4

± 7

Diablo Rosso IV

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.

DisciplineCategoryPilot Road 4Diablo Rosso IVΔHead-to-head
Also published by the testers (not in the score)
Overall Ranking Overall #1/7 2014 Motorrad Premium Touring Motorcycle Tyre Test #5/12 2025 Sport and Hypersport Motorcycle Tyre Test – Different tests

Pros, cons & observations

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

Tire A Pilot Road 4

Pros

  • Outstanding wet weather grip and performance
  • Impressive tread life and mileage longevity for touring and commuting
  • Predictable and confident handling in everyday dry and wet conditions

Cons

  • Slippery when brand new, requiring a cautious break-in period
  • Tread pattern can cause movement or a vague front-end feel in warmer weather
  • Some riders experienced uneven wear or quicker wear on the front tire
All owner themes in the Pilot Road 4 review

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
All owner themes in the Diablo Rosso IV review

Specs side by side

Attribute A · Michelin Pilot Road 4 B · Pirelli Diablo Rosso IV
CategorySummerSummer
Vehicle typeMotorcycleMotorcycle

Which one should you actually buy?

Michelin Pilot Road 4

Pirelli Diablo Rosso IV

Narrow edge: Pirelli Diablo Rosso IV — better handling, wet and comfort. It leads or ties in every category we score. Michelin Pilot Road 4 rests on little evidence so far (0 tests, 19 reviews), so read this result as provisional.

Pick tire B You enjoy sharp, responsive handling

Pirelli Diablo Rosso IV scores 86 vs 75 on handling.

Pick tire B Your priority is wet-weather safety

Pirelli Diablo Rosso IV scores 82 vs 78 on wet.

Pick tire B You want the most comfortable ride

Pirelli Diablo Rosso IV scores 76 vs 73 on comfort.

Tire A · Michelin Pilot Road 4
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Tire B · Pirelli Diablo Rosso IV
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Pilot Road 4 or Diablo Rosso IV?

Which is better in the wet, Pilot Road 4 or Diablo Rosso IV?

Pirelli Diablo Rosso IV, 82 vs 78 on our wet score.

Which grips better on dry roads, Pilot Road 4 or Diablo Rosso IV?

Neither, by our numbers: 73 vs 75 on the dry score, within 3 points.

Which is more comfortable, Pilot Road 4 or Diablo Rosso IV?

Pirelli Diablo Rosso IV, 76 vs 73 on our comfort score.

Which lasts longer, Pilot Road 4 or Diablo Rosso IV?

Neither, by our numbers: 70 vs 70 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