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Head-to-head Updated

Avon Spirit ST vs Avon Storm 3D XM — 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 15 + 12 owner reviews. How we score

Spirit ST is ahead, 82–64

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Avon Spirit ST
Tire AAvon

Spirit ST

Summer

± 8Provisional

Tests – · none yet Owners 87 · 15 reviews

Avon Storm 3D XM
Tire BAvon

Storm 3D XM

Summer

± 8Provisional

Tests – · none yet Owners 63 · 12 reviews

Category by category

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

  1. 82

    Dry

    Spirit ST +17
    65
    Why this score
    SourceSpirit STStorm 3D XM
    Professional tests (TWG score)≈ 77 (est.)≈ 66 (est.)
    Reviews found online8963

    Spirit ST: 60% × 76.7 (est.) + 40% × 89.1 = 82

    Storm 3D XM: 60% × 65.8 (est.) + 40% × 62.7 = 65

    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 Storm 3D XM. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).

  2. 87

    Wet

    Spirit ST +24
    63
    Why this score
    SourceSpirit STStorm 3D XM
    Professional tests (TWG score)≈ 83 (est.)≈ 65 (est.)
    Reviews found online9360

    Spirit ST: 60% × 83 (est.) + 40% × 93.1 = 87

    Storm 3D XM: 60% × 64.9 (est.) + 40% × 60.1 = 63

    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 Storm 3D XM. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 78

    Comfort

    Spirit ST +14
    64
    Why this score
    SourceSpirit STStorm 3D XM
    Professional tests (TWG score)≈ 71 (est.)≈ 67 (est.)
    Reviews found online8262

    Spirit ST: 40% × 71.5 (est.) + 60% × 81.9 = 78

    Storm 3D XM: 40% × 67.4 (est.) + 60% × 62.1 = 64

    No road tests of comfort for Spirit ST. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

    No road tests of comfort for Storm 3D XM. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  4. 75

    Treadwear

    Spirit ST +7
    68
    Why this score
    SourceSpirit STStorm 3D XM
    Professional tests (TWG score)≈ 71 (est.)≈ 67 (est.)
    Reviews found online8068

    Spirit ST: 60% × 71.5 (est.) + 40% × 80.3 = 75

    Storm 3D XM: 60% × 67.2 (est.) + 40% × 68.3 = 68

    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 0.36).

    No road tests of treadwear for Storm 3D XM. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  5. 87

    Handling (owners)

    Spirit ST +28
    59
    Why this score
    SourceSpirit STStorm 3D XM
    Reviews found online8759
Scores at a glance
CategoryAvon Spirit STAvon Storm 3D XM
Relative Score 82 64
Dry 82 65
Wet 87 63
Comfort 78 64
Treadwear 75 68
Handling (owners) 87 59

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

Storm 3D XM

Pros, cons & observations

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

Tire A Spirit ST

Pros

  • Excellent grip in dry, cold and wet conditions, with confidence-inspiring braking and wet-weather performance, and capability extending to occasional track use
  • Stable, predictable handling at high speeds and under heavy loads (pillion and luggage), with a comfortable ride and low noise
  • Good tread life reported by several riders, who describe even wear, resistance to squaring off and mileage up to nearly double that of Michelin tyres

Cons

  • Wear complaints from a minority, including one rider who got only about 2,000 km
  • Reluctance to turn in fast direction changes and a lack of feedback from the tyres, according to one reviewer
  • Front tyre vibration and shaking over 60 mph on one BMW K1600GT, which persisted after rebalancing at two garages
All owner themes in the Spirit ST review

Tire B Storm 3D XM

Pros

  • High mileage and tread longevity
  • Strong dry-weather grip and stability
  • Excellent value for money compared to premium alternatives

Cons

  • Inconsistent wet-weather performance and lack of confidence
  • Vague front-end feedback and 'squirming' sensation
  • Tendency to track road grooves and imperfections
All owner themes in the Storm 3D XM review

Specs side by side

Attribute A · Avon Spirit ST B · Avon Storm 3D XM
CategorySummerSummer
Vehicle typeMotorcycleMotorcycle

Which one should you actually buy?

Avon Spirit ST

Avon Storm 3D XM

Winner: Avon Spirit ST — better handling, wet and dry. It leads or ties in every category we score. Avon Spirit ST rests on little evidence so far (0 tests, 15 reviews), so read this result as provisional. Avon Storm 3D XM rests on little evidence so far (0 tests, 12 reviews), so read this result as provisional.

Pick tire A You enjoy sharp, responsive handling

Avon Spirit ST scores 87 vs 59 on handling.

Pick tire A Your priority is wet-weather safety

Avon Spirit ST scores 87 vs 63 on wet.

Pick tire A You want the most grip on dry roads

Avon Spirit ST scores 82 vs 65 on dry.

Pick tire A You want the most comfortable ride

Avon Spirit ST scores 78 vs 64 on comfort.

Tire A · Avon Spirit ST
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Tire B · Avon Storm 3D XM
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Spirit ST or Storm 3D XM?

Which is better in the wet, Spirit ST or Storm 3D XM?

Avon Spirit ST, 87 vs 63 on our wet score.

Which grips better on dry roads, Spirit ST or Storm 3D XM?

Avon Spirit ST, 82 vs 65 on our dry score.

Which is more comfortable, Spirit ST or Storm 3D XM?

Avon Spirit ST, 78 vs 64 on our comfort score.

Which lasts longer, Spirit ST or Storm 3D XM?

Avon Spirit ST, 75 vs 68 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