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Head-to-head Updated September 2026

Bridgestone S20 vs Pirelli Diablo Rosso IV — Compared (September 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.

Tire A Bridgestone

Bridgestone S20

Summer Extreme Performance tires

Bridgestone S20 tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
73/100
13 owner reviews
Dry
82
Wet
72
Comfort
80
Treadwear
50
Handling
82
Check price on Amazon

Prices change daily — check the retailer for your size.

VS
Tire B Pirelli

Pirelli Diablo Rosso IV

Summer Max Performance tires

Pirelli Diablo Rosso IV tread pattern
Objective (60%)
70/100
1 professional test
User signal (40%)
87/100
7 owner reviews
Dry
89
Wet
72
Comfort
86
Treadwear
76
Handling
91
Check price on Amazon

Prices change daily — check the retailer for your size.

VerdictWinner: Pirelli Diablo Rosso IV — better treadwear, handling and dry. It leads or ties in every category we score.
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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) Diablo Rosso IV leads by 7
A
82
B
89
Why this score
SourceS20Diablo Rosso IV
Professional tests (TWG score) – 87
Tyre Reviews owners 82 93

Wet

Weight: Important
Score (0–100)
A
72
B
72
Why this score
SourceS20Diablo Rosso IV
Professional tests (TWG score) – 67
Tyre Reviews owners 72 79

Comfort

Weight: Neutral
Score (0–100) Diablo Rosso IV leads by 6
A
80
B
86
Why this score
SourceS20Diablo Rosso IV
Tyre Reviews owners 80 86

Treadwear

Weight: Important
Score (0–100) Diablo Rosso IV leads by 26
A
50
B
76
Why this score
SourceS20Diablo Rosso IV
Tyre Reviews owners 50 76

Handling

Weight: Neutral
Score (0–100) Diablo Rosso IV leads by 9
A
82
B
91
Why this score
SourceS20Diablo Rosso IV
Tyre Reviews owners 82 91
DriverReviews owners – 92

Scores at a glance

CategoryBridgestone S20Pirelli Diablo Rosso IV
Relative Score 70 81
Dry 82 89
Wet 72 72
Comfort 80 86
Treadwear 50 76
Handling 82 91

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 S20

The Bridgestone S20 is widely regarded as a high-performance tire that excels in grip and handling, offering riders exceptional confidence in both wet and dry conditions. However, this performance comes at the cost of rapid tread wear, with many users reporting significantly shorter lifespans compared to sport-touring alternatives.

Pros

  • Exceptional grip levels in both wet and dry conditions
  • Progressive and predictable handling characteristics
  • Strong performance during aggressive road riding and track use
  • Quick turn-in and confidence-inspiring feedback

Cons

  • Very short tread life, particularly on high-torque motorcycles
  • Rapid degradation and squaring off of the rear tire
  • Front tire can be slow to reach optimal operating temperature
  • High frequency of replacement leading to increased long-term costs

Observations

  • High-torque motorcycles like the ZZR1400 experience extremely rapid rear tire wear, often requiring replacement in under 2,000 miles.
  • Riders of lighter, agile bikes like the SV650 report better satisfaction with the tire's profile and handling characteristics.
  • Track-focused riders noted that while the tire performs well under heavy load, it can shred quickly during intensive track sessions.
Tire B Pirelli Diablo Rosso IV

The Pirelli Diablo Rosso IV is widely regarded as a top-tier hypersport tire that offers significant improvements in feedback, warm-up time, and lean-angle confidence over its predecessors. While users consistently praise its performance in both wet and dry conditions, the consensus notes that these gains come at a premium price point and with potential longevity trade-offs depending on riding style.

Pros

  • Exceptional dry and wet grip with rapid warm-up times.
  • High level of precision and confidence at deep lean angles.
  • Improved feedback and stability compared to previous generations (DR2/DR3).
  • Surprisingly good low-speed stability and handling characteristics.

Cons

  • Higher price point compared to competitors and previous models.
  • Performance consistency may degrade as the tire reaches the end of its service life.
  • Potential for increased wear rates under aggressive riding conditions.

Observations

  • Users reported significant improvements in resistance to cupping on smaller displacement bikes (e.g., PCX 125) compared to the Diablo Rosso II.
  • Aggressive riders utilizing standard sportbike sizes (120/70 and 190/55) report that the tire maintains performance characteristics comparable to more track-focused compounds like the Rosso Corsa II.
Specifications

Specs side by side

Attribute A · Bridgestone S20 B · Pirelli Diablo Rosso IV
CategorySummer Extreme Performance tiresSummer Max Performance tires
Vehicle typeMotorcycleMotorcycle
Final verdict

Which one should you actually buy?

Bridgestone

Pirelli

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

Pick tire B You want the longest tread life

Pirelli Diablo Rosso IV scores 76 vs 50 on treadwear.

Pick tire B You enjoy sharp, responsive handling

Pirelli Diablo Rosso IV scores 91 vs 82 on handling.

Pick tire B You want the most grip on dry roads

Pirelli Diablo Rosso IV scores 89 vs 82 on dry.

Pick tire B You want the most comfortable ride

Pirelli Diablo Rosso IV scores 86 vs 80 on comfort.

Tire A · Bridgestone S20
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Tire B · Pirelli Diablo Rosso IV
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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.