70
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
73/100
13 owner reviews
Prices change daily — check the retailer for your size.
Head-to-head
Updated May 2026
Bridgestone S20 vs Pirelli Diablo Rosso III — 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
82
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
83/100
9 owner reviews
Prices change daily — check the retailer for your size.
VerdictWinner: Pirelli Diablo Rosso III — better treadwear, dry and comfort. 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
Score (0–100)
Diablo Rosso III leads by 8
Why this score
| Source | S20 | Diablo Rosso III |
|---|---|---|
| Tyre Reviews owners | 82 | 90 |
Wet
Score (0–100)
Diablo Rosso III leads by 5
Why this score
| Source | S20 | Diablo Rosso III |
|---|---|---|
| Tyre Reviews owners | 72 | 77 |
Comfort
Score (0–100)
Diablo Rosso III leads by 8
Why this score
| Source | S20 | Diablo Rosso III |
|---|---|---|
| Tyre Reviews owners | 80 | 88 |
Treadwear
Score (0–100)
Diablo Rosso III leads by 25
Why this score
| Source | S20 | Diablo Rosso III |
|---|---|---|
| Tyre Reviews owners | 50 | 75 |
Handling
Score (0–100)
Diablo Rosso III leads by 8
Why this score
| Source | S20 | Diablo Rosso III |
|---|---|---|
| Tyre Reviews owners | 82 | 90 |
Scores at a glance
| Category | Bridgestone S20 | Pirelli Diablo Rosso III |
|---|---|---|
| Relative Score | 70 | 82 |
| Dry | 82 | 90 |
| Wet | 72 | 77 |
| Comfort | 80 | 88 |
| Treadwear | 50 | 75 |
| Handling | 82 | 90 |
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
70
/ 100
Tire A
82
/ 100
Tire B
From owners
Pros, cons & observations
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
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.
The Pirelli Diablo Rosso III is widely regarded as a high-performance sport tire that excels in providing predictable grip, excellent feedback, and confidence-inspiring wet-weather handling. While users consistently praise its agility and performance on twisty roads, there is a notable divide regarding tread longevity, with some riders experiencing rapid wear compared to more specialized track-focused or touring alternatives.
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
- High level of rider feedback and stability under heavy braking
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
Observations
- Sportbike riders (Ducati 959 Panigale, Yamaha R1) report high satisfaction with the tire's ability to handle aggressive cornering and track-day usage.
- Users transitioning from touring-oriented tires (e.g., Scorpion Trail) to the Rosso III note a significant increase in agility and cornering capability, though at the expense of touring longevity.
Specifications
Specs side by side
| Attribute | A · Bridgestone S20 | B · Pirelli Diablo Rosso III |
|---|---|---|
| Category | Summer Extreme Performance tires | Summer Max Performance tires |
| Vehicle type | Motorcycle | Motorcycle |
Final verdict
Which one should you actually buy?
70
/ 100
Bridgestone
82
/ 100
Pirelli
Winner: Pirelli Diablo Rosso III — better treadwear, dry and comfort. It leads or ties in every category we score.
Pick tire B
You want the longest tread life
Pirelli Diablo Rosso III scores 75 vs 50 on treadwear.
Pick tire B
You want the most grip on dry roads
Pirelli Diablo Rosso III scores 90 vs 82 on dry.
Pick tire B
You want the most comfortable ride
Pirelli Diablo Rosso III scores 88 vs 80 on comfort.
Pick tire B
You enjoy sharp, responsive handling
Pirelli Diablo Rosso III scores 90 vs 82 on handling.
Tire A · Bridgestone S20
Tire B · Pirelli Diablo Rosso III
More comparisons
Also compared with
Bridgestone S20 also compared with
Pirelli Diablo Rosso III also compared with
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.