81
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
86/100
7 owner reviews
Prices change daily — check the retailer for your size.
Head-to-head
Updated May 2026
Bridgestone Battlax Hypersport S21 vs Michelin Diamaris — 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
69
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
72/100
3 owner reviews
Prices change daily — check the retailer for your size.
VerdictWinner: Bridgestone Battlax Hypersport S21 — better handling, dry and wet. It leads or ties in every category we score.
Read full
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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)
Battlax Hypersport S21 leads by 12
Why this score
| Source | Battlax Hypersport S21 | Diamaris |
|---|---|---|
| Tyre Reviews owners | 95 | 83 |
Wet
Score (0–100)
Battlax Hypersport S21 leads by 10
Why this score
| Source | Battlax Hypersport S21 | Diamaris |
|---|---|---|
| Tyre Reviews owners | 80 | 70 |
Comfort
Score (0–100)
Battlax Hypersport S21 leads by 3
Why this score
| Source | Battlax Hypersport S21 | Diamaris |
|---|---|---|
| Tyre Reviews owners | 83 | 80 |
Treadwear
Score (0–100)
Battlax Hypersport S21 leads by 10
Why this score
| Source | Battlax Hypersport S21 | Diamaris |
|---|---|---|
| Tyre Reviews owners | 63 | 53 |
Handling
Score (0–100)
Battlax Hypersport S21 leads by 22
Why this score
| Source | Battlax Hypersport S21 | Diamaris |
|---|---|---|
| Tyre Reviews owners | 95 | 73 |
Scores at a glance
| Category | Bridgestone Battlax Hypersport S21 | Michelin Diamaris |
|---|---|---|
| Relative Score | 81 | 69 |
| Dry | 95 | 83 |
| Wet | 80 | 70 |
| Comfort | 83 | 80 |
| Treadwear | 63 | 53 |
| Handling | 95 | 73 |
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
81
/ 100
Tire A
69
/ 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 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.
The Michelin Diamaris is generally regarded as a high-performance tire that offers a significant improvement in ride comfort and handling over factory-fitted alternatives. While users praise its initial grip and refinement, there is a consensus that performance degrades noticeably as the tread wears down, particularly regarding traction during acceleration.
Pros
- Superior ride comfort and reduced cabin noise compared to competitors
- Excellent initial dry handling and cornering stability
- Respectable tread life for a performance-oriented tire
Cons
- Significant decline in grip levels as the tire reaches the end of its service life
- Increased tendency for wheel spin during acceleration as tread depth decreases
- Uneven wear patterns between front and rear axles
Observations
- Owners of heavy SUVs like the Volkswagen Touareg and Volvo XC90 report that the tire effectively manages the weight of the vehicle while improving overall refinement.
- Users noted a distinct difference in longevity between front and rear axles, suggesting the tire is sensitive to the specific weight distribution and drive configuration of large SUVs.
Specifications
Specs side by side
| Attribute | A · Bridgestone Battlax Hypersport S21 | B · Michelin Diamaris |
|---|---|---|
| Category | Summer Extreme Performance tires | Summer High Performance tires |
| Vehicle type | Motorcycle | SUV and 4x4 |
Final verdict
Which one should you actually buy?
81
/ 100
Bridgestone
69
/ 100
Michelin
Winner: Bridgestone Battlax Hypersport S21 — better handling, dry and wet. It leads or ties in every category we score.
Pick tire A
You enjoy sharp, responsive handling
Bridgestone Battlax Hypersport S21 scores 95 vs 73 on handling.
Pick tire A
You want the most grip on dry roads
Bridgestone Battlax Hypersport S21 scores 95 vs 83 on dry.
Pick tire A
Your priority is wet-weather safety
Bridgestone Battlax Hypersport S21 scores 80 vs 70 on wet.
Pick tire A
You want the longest tread life
Bridgestone Battlax Hypersport S21 scores 63 vs 53 on treadwear.
Tire A · Bridgestone Battlax Hypersport S21
Tire B · Michelin Diamaris
More comparisons
Also compared with
Bridgestone Battlax Hypersport S21 also compared with
Michelin Diamaris 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.