Tests – · none yet Owners 79 · 6 reviews
Head-to-head
Updated
Michelin Power GP vs Avon Spirit ST — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Spirit ST leads, 78–76 Narrow edge
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Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
79
Dry
Level79Why this score
Source Power GP Spirit ST Reviews found online 85 85 -
75
Wet
Spirit ST +883Why this score
Source Power GP Spirit ST Reviews found online 76 87 -
75
Comfort
Power GP +174Why this score
Source Power GP Spirit ST Reviews found online 82 79 -
70
Treadwear
Level70Why this score
Source Power GP Spirit ST Reviews found online 74 73 -
84
Handling
Power GP +183Why this score
Source Power GP Spirit ST Reviews found online 84 83
Scores at a glance
| Category | Michelin Power GP | Avon Spirit ST |
|---|---|---|
| Relative Score | 76 | 78 |
| Dry | 79 | 79 |
| Wet | 75 | 83 |
| Comfort | 75 | 74 |
| Treadwear | 70 | 70 |
| Handling | 84 | 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 and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Important
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Important
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Less important
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Important
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Neutral
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Recomputed
Headline score
76
/ 100
Power GP
78
/ 100
Spirit ST
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Power GP
Pros
- Rapid warm-up time providing immediate confidence
- Exceptional dry grip and predictable feedback
- Superior performance in damp or wet conditions compared to competitors
Cons
- Limited tread life, with some users reporting replacement intervals between 5,000 and 6,000 kilometers
- Potential for uneven wear or cupping on the tire edges
- High performance focus may not suit riders prioritizing maximum longevity
Tire B 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
Specs side by side
| Attribute | A · Michelin Power GP | B · Avon Spirit ST |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Motorcycle | Motorcycle |
Which one should you actually buy?
76
/ 100
Michelin Power GP
78
/ 100
Avon Spirit ST
Winner: Avon Spirit ST — better wet. It leads or ties in every category we score.
Pick tire B
Your priority is wet-weather safety
Avon Spirit ST scores 83 vs 75 on wet.
Tire A · Michelin Power GP
Tire B · Avon Spirit ST
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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.
Community buzz from Reddit and forums is shown for context only — it never changes the score.