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Michelin Pilot Road 4 vs Pirelli Diablo Rosso II — 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 + 0 road tests and 19 + 19 owner reviews. How we score

Too close to call: Pilot Road 4 74, Diablo Rosso II 73.

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Michelin Pilot Road 4
Tire AMichelin

Pilot Road 4

Summer

± 8Provisional

Tests – · none yet Owners 76 · 19 reviews

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 II +2
    75
    Why this score
    SourcePilot Road 4Diablo Rosso II
    Professional tests (TWG score)≈ 71 (est.)≈ 72 (est.)
    Reviews found online7679

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

    Diablo Rosso II: 60% × 72.3 (est.) + 40% × 78.5 = 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).

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

  2. 78

    Wet

    Pilot Road 4 +6
    72
    Why this score
    SourcePilot Road 4Diablo Rosso II
    Professional tests (TWG score)≈ 76 (est.)≈ 72 (est.)
    Reviews found online8173

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

    Diablo Rosso II: 60% × 71.9 (est.) + 40% × 72.8 = 72

    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).

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

  3. 73

    Comfort

    Level
    73
    Why this score
    SourcePilot Road 4Diablo Rosso II
    Professional tests (TWG score)≈ 70 (est.)≈ 70 (est.)
    Reviews found online7575

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

    Diablo Rosso II: 40% × 70 (est.) + 60% × 75.2 = 73

    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 II. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  4. 70

    Treadwear

    Pilot Road 4 +3
    67
    Why this score
    SourcePilot Road 4Diablo Rosso II
    Professional tests (TWG score)≈ 69 (est.)≈ 67 (est.)
    Reviews found online7367

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

    Diablo Rosso II: 60% × 66.7 (est.) + 40% × 66.9 = 67

    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 II. 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 II +2
    77
    Why this score
    SourcePilot Road 4Diablo Rosso II
    Reviews found online7577
Scores at a glance
CategoryMichelin Pilot Road 4Pirelli Diablo Rosso II
Relative Score 74 73
Dry 73 75
Wet 78 72
Comfort 73 73
Treadwear 70 67
Handling (owners) 75 77

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

± 8

Diablo Rosso II

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 II

Pros

  • Exceptional dry-weather grip and cornering stability
  • Rapid warm-up time for immediate performance
  • Predictable handling and high levels of rider feedback

Cons

  • Inconsistent tread life, with reports of rapid center wear and cupping
  • Polarized wet-weather performance ranging from 'glue-like' to 'dangerous'
  • Tendency for the rear tire to square off over time
All owner themes in the Diablo Rosso II review

Specs side by side

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

Which one should you actually buy?

Michelin Pilot Road 4

Pirelli Diablo Rosso II

Too close to call: Michelin Pilot Road 4 and Pirelli Diablo Rosso II are within 2 points overall. Michelin Pilot Road 4 is stronger on wet and treadwear. Michelin Pilot Road 4 rests on little evidence so far (0 tests, 19 reviews), so read this result as provisional. Pirelli Diablo Rosso II rests on little evidence so far (0 tests, 19 reviews), so read this result as provisional.

Pick tire A Your priority is wet-weather safety

Michelin Pilot Road 4 scores 78 vs 72 on wet.

Pick tire A You want the longest tread life

Michelin Pilot Road 4 scores 70 vs 67 on treadwear.

Tire A · Michelin Pilot Road 4
Check price on Amazon
Tire B · Pirelli Diablo Rosso II
Check price on Amazon

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Pilot Road 4 or Diablo Rosso II?

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

Michelin Pilot Road 4, 78 vs 72 on our wet score.

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

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

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

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

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

Michelin Pilot Road 4, 70 vs 67 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