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Bridgestone Battlax BT 021 vs Pirelli Diablo Rosso III — Compared

Relative Score (0–100): 60% professional tests, 40% owner reviews.

Diablo Rosso III is ahead, 72–66

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Category by category

Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.

  1. 68

    Dry

    Diablo Rosso III +6
    74
    Why this score
    SourceBattlax BT 021Diablo Rosso III
    Reviews found online6877
  2. 67

    Wet

    Diablo Rosso III +5
    72
    Why this score
    SourceBattlax BT 021Diablo Rosso III
    Reviews found online6673
  3. 67

    Comfort

    Diablo Rosso III +5
    72
    Why this score
    SourceBattlax BT 021Diablo Rosso III
    Reviews found online6674
  4. 65

    Treadwear

    Level
    65
    Why this score
    SourceBattlax BT 021Diablo Rosso III
    Reviews found online6565
  5. 65

    Handling

    Diablo Rosso III +13
    78
    Why this score
    SourceBattlax BT 021Diablo Rosso III
    Reviews found online6578
Scores at a glance
CategoryBridgestone Battlax BT 021Pirelli Diablo Rosso III
Relative Score 66 72
Dry 68 74
Wet 67 72
Comfort 67 72
Treadwear 65 65
Handling 65 78

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

Battlax BT 021

Diablo Rosso III

Pros, cons & observations

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

Tire A Battlax BT 021

Pros

  • Exceptional tread longevity and durability for high-mileage commuters
  • Reliable performance for motorway and long-distance riding
  • Strong grip characteristics when tire pressures are correctly calibrated

Cons

  • Handling characteristics can feel unpredictable or heavy if pressures are not perfectly matched to the bike
  • Reports of poor wet-weather grip and lack of rider feedback
  • Tendency for the center of the tire to flatten out significantly during high-mileage motorway use
All owner themes in the Battlax BT 021 review

Tire B Diablo Rosso III

Pros

  • Exceptional dry grip and predictable handling at various lean angles
  • Improved wet-weather performance compared to more aggressive track-oriented tires
  • Fast warm-up times providing immediate confidence

Cons

  • Inconsistent tread life, with some users reporting premature rear tire wear
  • Potential for rapid degradation under aggressive riding styles
  • Isolated reports of structural issues such as delamination
All owner themes in the Diablo Rosso III review

Specs side by side

Attribute A · Bridgestone Battlax BT 021 B · Pirelli Diablo Rosso III
CategorySummerSummer
Vehicle typeMotorcycleMotorcycle

Which one should you actually buy?

Bridgestone Battlax BT 021

Pirelli Diablo Rosso III

Winner: Pirelli Diablo Rosso III — better handling, dry and wet. It leads or ties in every category we score.

Pick tire B You enjoy sharp, responsive handling

Pirelli Diablo Rosso III scores 78 vs 65 on handling.

Pick tire B You want the most grip on dry roads

Pirelli Diablo Rosso III scores 74 vs 68 on dry.

Pick tire B Your priority is wet-weather safety

Pirelli Diablo Rosso III scores 72 vs 67 on wet.

Pick tire B You want the most comfortable ride

Pirelli Diablo Rosso III scores 72 vs 67 on comfort.

Tire A · Bridgestone Battlax BT 021
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Tire B · Pirelli Diablo Rosso III
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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.

72

Leads

Diablo Rosso III

Amazon