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Head-to-head Updated

Avon Spirit ST vs Bridgestone Battlax Hypersport S21 — 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 0 + 0 road tests and 14 + 7 owner reviews. How we score

Spirit ST is ahead, 81–74

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Avon Spirit ST
Tire AAvon

Spirit ST

Summer

± 8Provisional

Tests – · none yet Owners 86 · 14 reviews

Category by category

Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.

  1. 81

    Dry

    Spirit ST +4
    77
    Why this score
    SourceSpirit STBattlax Hypersport S21
    Professional tests (TWG score)≈ 76 (est.)≈ 74 (est.)
    Reviews found online8882

    Spirit ST: 60% × 76.3 (est.) + 40% × 87.6 = 81

    Battlax Hypersport S21: 60% × 73.9 (est.) + 40% × 81.8 = 77

    No road tests of dry for Spirit ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

    No road tests of dry for Battlax Hypersport S21. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 86

    Wet

    Spirit ST +10
    76
    Why this score
    SourceSpirit STBattlax Hypersport S21
    Professional tests (TWG score)≈ 83 (est.)≈ 75 (est.)
    Reviews found online9278

    Spirit ST: 60% × 82.6 (est.) + 40% × 92.1 = 86

    Battlax Hypersport S21: 60% × 74.8 (est.) + 40% × 78.1 = 76

    No road tests of wet for Spirit ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

    No road tests of wet for Battlax Hypersport S21. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 77

    Comfort

    Spirit ST +4
    73
    Why this score
    SourceSpirit STBattlax Hypersport S21
    Professional tests (TWG score)≈ 71 (est.)≈ 70 (est.)
    Reviews found online8174

    Spirit ST: 40% × 71.3 (est.) + 60% × 80.9 = 77

    Battlax Hypersport S21: 40% × 70.1 (est.) + 60% × 74.4 = 73

    No road tests of comfort for Spirit ST or Battlax Hypersport S21. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  4. 74

    Treadwear

    Spirit ST +12
    62
    Why this score
    SourceSpirit STBattlax Hypersport S21
    Professional tests (TWG score)≈ 71 (est.)≈ 64 (est.)
    Reviews found online7960

    Spirit ST: 60% × 70.5 (est.) + 40% × 78.6 = 74

    Battlax Hypersport S21: 60% × 64 (est.) + 40% × 60.1 = 62

    No road tests of treadwear for Spirit ST. 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 Battlax Hypersport S21. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).

  5. 85

    Handling (owners)

    Spirit ST +2
    83
    Why this score
    SourceSpirit STBattlax Hypersport S21
    Reviews found online8583
Scores at a glance
CategoryAvon Spirit STBridgestone Battlax Hypersport S21
Relative Score 81 74
Dry 81 77
Wet 86 76
Comfort 77 73
Treadwear 74 62
Handling (owners) 85 83

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
± 8

Spirit ST

± 8

Battlax Hypersport S21

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A Spirit ST

Pros

  • Excellent wet and dry weather grip
  • High durability and resistance to squaring off
  • Strong value proposition compared to premium competitors

Cons

  • Reports of vague steering feedback and reluctance to turn on certain bikes
  • Inconsistent quality control leading to high-speed vibrations for some users
  • Poor customer support resolution for warranty claims
All owner themes in the Spirit ST review

Tire B Battlax Hypersport S21

Pros

  • Exceptional dry grip and cornering stability
  • Rapid warm-up time
  • High performance capability suitable for track days

Cons

  • Limited tread longevity
  • Rapid wear on the center compound during straight-line riding
  • Reduced traction on painted road markings and pedestrian crossings
All owner themes in the Battlax Hypersport S21 review

Specs side by side

Attribute A · Avon Spirit ST B · Bridgestone Battlax Hypersport S21
CategorySummerSummer
Vehicle typeMotorcycleMotorcycle

Which one should you actually buy?

Avon Spirit ST

Bridgestone Battlax Hypersport S21

Winner: Avon Spirit ST — better treadwear, wet and dry. It leads or ties in every category we score. Avon Spirit ST rests on little evidence so far (0 tests, 14 reviews), so read this result as provisional. Bridgestone Battlax Hypersport S21 rests on little evidence so far (0 tests, 7 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

Avon Spirit ST scores 74 vs 62 on treadwear.

Pick tire A Your priority is wet-weather safety

Avon Spirit ST scores 86 vs 76 on wet.

Pick tire A You want the most grip on dry roads

Avon Spirit ST scores 81 vs 77 on dry.

Pick tire A You want the most comfortable ride

Avon Spirit ST scores 77 vs 73 on comfort.

Tire A · Avon Spirit ST
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Tire B · Bridgestone Battlax Hypersport S21
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Spirit ST or Battlax Hypersport S21?

Which is better in the wet, Spirit ST or Battlax Hypersport S21?

Avon Spirit ST, 86 vs 76 on our wet score.

Which grips better on dry roads, Spirit ST or Battlax Hypersport S21?

Avon Spirit ST, 81 vs 77 on our dry score.

Which is more comfortable, Spirit ST or Battlax Hypersport S21?

Avon Spirit ST, 77 vs 73 on our comfort score.

Which lasts longer, Spirit ST or Battlax Hypersport S21?

Avon Spirit ST, 74 vs 62 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