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Head-to-head Updated May 2026

Bridgestone Battlax Hypersport S21 vs Pirelli Diablo Rosso — Compared (May 2026)

Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.

VS
Tire B Pirelli

Pirelli Diablo Rosso

Summer Ultra High Performance tires

Pirelli Diablo Rosso tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
59/100
5 owner reviews
Dry
70
Wet
33
Comfort
74
Treadwear
70
Handling
58
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VerdictWinner: Bridgestone Battlax Hypersport S21 — better wet, handling and dry. Pick the Pirelli Diablo Rosso if treadwear matters most to you.
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Category breakdown

5 categories, side by side

Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.

Dry

Weight: Neutral
Score (0–100) Battlax Hypersport S21 leads by 25
A
95
B
70
Why this score
SourceBattlax Hypersport S21Diablo Rosso
Tyre Reviews owners 95 70

Wet

Weight: Important
Score (0–100) Battlax Hypersport S21 leads by 47
A
80
B
33
Why this score
SourceBattlax Hypersport S21Diablo Rosso
Tyre Reviews owners 80 33

Comfort

Weight: Neutral
Score (0–100) Battlax Hypersport S21 leads by 9
A
83
B
74
Why this score
SourceBattlax Hypersport S21Diablo Rosso
Tyre Reviews owners 83 74

Treadwear

Weight: Important
Score (0–100) Diablo Rosso leads by 7
A
63
B
70
Why this score
SourceBattlax Hypersport S21Diablo Rosso
Tyre Reviews owners 63 70

Handling

Weight: Neutral
Score (0–100) Battlax Hypersport S21 leads by 37
A
95
B
58
Why this score
SourceBattlax Hypersport S21Diablo Rosso
Tyre Reviews owners 95 58

Scores at a glance

CategoryBridgestone Battlax Hypersport S21Pirelli Diablo Rosso
Relative Score 81 59
Dry 95 70
Wet 80 33
Comfort 83 74
Treadwear 63 70
Handling 95 58

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

Tire A

Tire B

From owners

Pros, cons & observations

Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.

Tire A Bridgestone Battlax Hypersport S21

The Bridgestone Battlax Hypersport S21 is widely regarded as a high-performance tire that excels in grip and handling, making it a favorite for aggressive street riding and occasional track use. While users praise its quick warm-up and confidence-inspiring cornering, the trade-off is a relatively short tread life, particularly for riders who spend significant time on straight roads.

Pros

  • Exceptional dry grip and cornering stability
  • Rapid warm-up time
  • High performance capability suitable for track days
  • Predictable and communicative road feel

Cons

  • Limited tread longevity
  • Rapid wear on the center compound during straight-line riding
  • Reduced traction on painted road markings and pedestrian crossings

Observations

  • Riders transitioning from 190/50 to 190/55 profiles on sportbikes like the Yamaha R1 report improved handling characteristics.
  • The tire is specifically noted for its suitability on high-demand, high-horsepower sportbikes.
Tire B Pirelli Diablo Rosso

The Pirelli Diablo Rosso receives polarized feedback, with users praising its performance in warm, dry conditions while expressing significant concerns regarding its reliability in cold or wet weather. While some riders appreciate the tire's neutral handling and grip for spirited riding, others report sudden, unpredictable traction loss that compromises rider confidence.

Pros

  • Excellent grip and handling in warm, dry conditions
  • Predictable and neutral steering characteristics
  • Strong performance on smaller displacement vehicles and scooters
  • Good feedback for spirited street riding

Cons

  • Sudden and unpredictable loss of traction in cold or wet conditions
  • Poor performance and safety concerns during rain
  • Inconsistent tread wear patterns
  • Faster than expected wear rates for some users

Observations

  • Users on smaller displacement scooters reported high satisfaction with grip and longevity.
  • Riders on mid-sized naked bikes, such as the Ducati Monster, reported significant instability and safety issues in sub-optimal weather.
Specifications

Specs side by side

Attribute A · Bridgestone Battlax Hypersport S21 B · Pirelli Diablo Rosso
CategorySummer Extreme Performance tiresSummer Ultra High Performance tires
Vehicle typeMotorcycleMotorcycle
Final verdict

Which one should you actually buy?

Bridgestone

Pirelli

Winner: Bridgestone Battlax Hypersport S21 — better wet, handling and dry. Pick the Pirelli Diablo Rosso if treadwear matters most to you.

Pick tire A Your priority is wet-weather safety

Bridgestone Battlax Hypersport S21 scores 80 vs 33 on wet.

Pick tire A You enjoy sharp, responsive handling

Bridgestone Battlax Hypersport S21 scores 95 vs 58 on handling.

Pick tire A You want the most grip on dry roads

Bridgestone Battlax Hypersport S21 scores 95 vs 70 on dry.

Pick tire A You want the most comfortable ride

Bridgestone Battlax Hypersport S21 scores 83 vs 74 on comfort.

Tire A · Bridgestone Battlax Hypersport S21
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Tire B · Pirelli Diablo Rosso
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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) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.

Community buzz from Reddit and forums is shown for context only — it never changes the score.