Tests 47 · 1 test Owners 72 · 9 reviews
Head-to-head
Updated
Bridgestone Battlax Sport Touring T32 vs Pirelli Diablo Rosso IV — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 1 + 1 road tests and 9 + 181 owner reviews. How we score
Diablo Rosso IV is ahead, 80–67
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Tests 75 · 1 test Owners 85 · 181 reviews
Best test result: #5 of 12 in 2025 Sport and Hypersport Motorcycle Tyre Test (wet handling)
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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71
Dry
Diablo Rosso IV +677Why this score
Source Battlax Sport Touring T32 Diablo Rosso IV Professional tests (TWG score) · – / 1 tests ≈ 70 (est.) 68 Reviews found online 72 92 Battlax Sport Touring T32: 60% × 69.8 (est.) + 40% × 72.2 = 71
Diablo Rosso IV: 60% × 67.8 + 40% × 91.9 = 77
No road tests of dry for Battlax Sport Touring T32. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
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59
Wet
Diablo Rosso IV +2584Why this score
Source Battlax Sport Touring T32 Diablo Rosso IV Professional tests (TWG score) · 1 / 1 tests 47 82 Reviews found online 79 87 Battlax Sport Touring T32: 60% × 46.6 + 40% × 78.6 = 59
Diablo Rosso IV: 60% × 81.7 + 40% × 87.1 = 84
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73
Comfort
Diablo Rosso IV +780Why this score
Source Battlax Sport Touring T32 Diablo Rosso IV Professional tests (TWG score) ≈ 70 (est.) ≈ 72 (est.) Reviews found online 76 85 Battlax Sport Touring T32: 40% × 70.3 (est.) + 60% × 75.5 = 73
Diablo Rosso IV: 40% × 72.1 (est.) + 60% × 85.3 = 80
No road tests of comfort for Battlax Sport Touring T32 or Diablo Rosso IV. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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64
Treadwear
Diablo Rosso IV +771Why this score
Source Battlax Sport Touring T32 Diablo Rosso IV Professional tests (TWG score) ≈ 65 (est.) ≈ 69 (est.) Reviews found online 62 74 Battlax Sport Touring T32: 60% × 64.8 (est.) + 40% × 62.2 = 64
Diablo Rosso IV: 60% × 69 (est.) + 40% × 74.4 = 71
No road tests of treadwear for Battlax Sport Touring T32. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
No road tests of treadwear for Diablo Rosso IV. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
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76
Handling (owners)
Diablo Rosso IV +1591Why this score
Source Battlax Sport Touring T32 Diablo Rosso IV Reviews found online 76 91
Scores at a glance
| Category | Bridgestone Battlax Sport Touring T32 | Pirelli Diablo Rosso IV |
|---|---|---|
| Relative Score | 67 | 80 |
| Dry | 71 | 77 |
| Wet | 59 | 84 |
| Comfort | 73 | 80 |
| Treadwear | 64 | 71 |
| Handling (owners) | 76 | 91 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip starts at “Important”. Treadwear starts at “Neutral” here: road tests measured it for at most one of the two tires, so it rests on owner reviews. Move the sliders and the scores update instantly.
Important
NotLessNeutralImportantMost
Important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
67
/ 100
Battlax Sport Touring T32
80
/ 100
Diablo Rosso IV
The professional test results behind the scores
Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.
| Discipline | Category | Battlax Sport Touring T32 | Diablo Rosso IV | Δ | Head-to-head |
|---|---|---|---|---|---|
| Wet Handling | Wet | 87% #6/6 · Best Motorcycle Tyres for 2024 | 97% #5/12 · 2025 Sport and Hypersport Motorcycle Tyre Test | – | Different tests |
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #6/6 Best Motorcycle Tyres for 2024 | #5/12 2025 Sport and Hypersport Motorcycle Tyre Test | – | Different tests |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Battlax Sport Touring T32
Pros
- Exceptional wet-weather performance and heavy rain confidence
- High-speed stability, including at autobahn speeds with full luggage
- Immediate improvement in handling agility and steering feel compared to competitors or older tires
Cons
- Faster-than-expected tread wear and relatively low mileage lifespan
- Rear tire can slip or slide when pushed hard in dry, warm conditions
- Reduced performance feel after a few thousand miles of use
Tire B Diablo Rosso IV
Pros
- Exceptional dry and wet grip with a high level of rider confidence
- Fast warm-up time and predictable handling at deep lean angles
- Improved steering precision and turn-in compared to previous generations like the Diablo Rosso III
Cons
- Higher price point compared to some competitors and previous models
- Noticeable reduction in grip and increased rear wheel spin as the tires wear down
- Requires full operating temperature for optimal performance late in its life cycle
Specs side by side
| Attribute | A · Bridgestone Battlax Sport Touring T32 | B · Pirelli Diablo Rosso IV |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Motorcycle | Motorcycle |
Which one should you actually buy?
67
/ 100
Bridgestone Battlax Sport Touring T32
80
/ 100
Pirelli Diablo Rosso IV
Winner: Pirelli Diablo Rosso IV — better wet, handling and comfort. It leads or ties in every category we score. Bridgestone Battlax Sport Touring T32 rests on little evidence so far (1 test, 9 reviews), so read this result as provisional.
Pick tire B
Your priority is wet-weather safety
Pirelli Diablo Rosso IV scores 84 vs 59 on wet.
Pick tire B
You enjoy sharp, responsive handling
Pirelli Diablo Rosso IV scores 91 vs 76 on handling.
Pick tire B
You want the most comfortable ride
Pirelli Diablo Rosso IV scores 80 vs 73 on comfort.
Pick tire B
You want the longest tread life
Pirelli Diablo Rosso IV scores 71 vs 64 on treadwear.
Tire A · Bridgestone Battlax Sport Touring T32
Tire B · Pirelli Diablo Rosso IV
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Battlax Sport Touring T32 or Diablo Rosso IV?
Which is better in the wet, Battlax Sport Touring T32 or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 84 vs 59 on our wet score.
Which grips better on dry roads, Battlax Sport Touring T32 or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 77 vs 71 on our dry score.
Which is more comfortable, Battlax Sport Touring T32 or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 80 vs 73 on our comfort score.
Which lasts longer, Battlax Sport Touring T32 or Diablo Rosso IV?
Pirelli Diablo Rosso IV, 71 vs 64 on our treadwear score.
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements), each result compared with every other tire in the same test and newer tests counting more. 40% comes from owner reviews found online, adjusted for how generously each site rates. Both use one scale: the average tested tire gets 70, the best 100. When a tire has only one of the two, the missing half is estimated from the other and the score stays closer to average; with no road test and fewer than five owner reviews it gets no score yet.
Handling is the exception: road tests measure it inside the dry and wet scores, so its own row comes from owner ratings only and starts as less important.
Community buzz from Reddit and forums is shown for context only — it never changes the score. Full methodology