84
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
87/100
2 owner reviews
Prices change daily — check the retailer for your size.
Head-to-head
Updated September 2026
Dunlop StreetSmart 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.
VS
81
/ 100
Objective (60%)
70/100
1 professional test
User signal (40%)
87/100
7 owner reviews
Prices change daily — check the retailer for your size.
VerdictWinner: Dunlop StreetSmart — better wet and dry. Pick the Pirelli Diablo Rosso IV if handling and treadwear matter 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
Score (0–100)
StreetSmart leads by 6
Why this score
| Source | StreetSmart | Diablo Rosso IV |
|---|---|---|
| Professional tests (TWG score) | – | 87 |
| Tyre Reviews owners | 95 | 93 |
Wet
Score (0–100)
StreetSmart leads by 23
Why this score
| Source | StreetSmart | Diablo Rosso IV |
|---|---|---|
| Professional tests (TWG score) | – | 67 |
| Tyre Reviews owners | 95 | 79 |
Comfort
Score (0–100)
Diablo Rosso IV leads by 1
Why this score
| Source | StreetSmart | Diablo Rosso IV |
|---|---|---|
| Tyre Reviews owners | 85 | 86 |
Treadwear
Score (0–100)
Diablo Rosso IV leads by 6
Why this score
| Source | StreetSmart | Diablo Rosso IV |
|---|---|---|
| Tyre Reviews owners | 70 | 76 |
Handling
Score (0–100)
Diablo Rosso IV leads by 11
Why this score
| Source | StreetSmart | Diablo Rosso IV |
|---|---|---|
| Tyre Reviews owners | 80 | 91 |
| DriverReviews owners | – | 92 |
Scores at a glance
| Category | Dunlop StreetSmart | Pirelli Diablo Rosso IV |
|---|---|---|
| Relative Score | 84 | 81 |
| Dry | 95 | 89 |
| Wet | 95 | 72 |
| Comfort | 85 | 86 |
| Treadwear | 70 | 76 |
| Handling | 80 | 91 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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Recomputed
Headline score
84
/ 100
Tire A
81
/ 100
Tire B
From owners
Pros, cons & observations
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
The Dunlop StreetSmart is highly regarded by riders of classic and vintage motorcycles as a reliable, versatile replacement tire. Users report exceptional performance across diverse road conditions and climates, positioning it as a top-tier choice for those seeking a dependable touring and daily-riding solution.
Pros
- Excellent versatility across varied road surfaces and weather conditions
- High level of rider confidence from the first ride
- Strong performance in heavy rain and on uneven terrain
- Suitable replacement for legacy motorcycle models
Cons
- Limited availability of specific vintage-compatible sizes
- Lack of long-term tread life data provided in current reviews
Observations
- Highly effective for older, classic motorcycle platforms like the Suzuki GSX 1100
- Compatible with standard vintage-style tire dimensions such as 90/90-19 and 120/90-18
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 · Dunlop StreetSmart | B · Pirelli Diablo Rosso IV |
|---|---|---|
| Category | Summer Premium Touring tires | Summer Max Performance tires |
| Vehicle type | Motorcycle | Motorcycle |
Final verdict
Which one should you actually buy?
84
/ 100
Dunlop
81
/ 100
Pirelli
Winner: Dunlop StreetSmart — better wet and dry. Pick the Pirelli Diablo Rosso IV if handling and treadwear matter most to you.
Pick tire A
Your priority is wet-weather safety
Dunlop StreetSmart scores 95 vs 72 on wet.
Pick tire B
You enjoy sharp, responsive handling
Pirelli Diablo Rosso IV scores 91 vs 80 on handling.
Pick tire A
You want the most grip on dry roads
Dunlop StreetSmart scores 95 vs 89 on dry.
Pick tire B
You want the longest tread life
Pirelli Diablo Rosso IV scores 76 vs 70 on treadwear.
Tire A · Dunlop StreetSmart
Tire B · Pirelli Diablo Rosso IV
More comparisons
Also compared with
Dunlop StreetSmart also compared with
Pirelli Diablo Rosso IV 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.