Tests – · none yet Owners 57 · 13 reviews
Head-to-head
Updated
Bridgestone S20 vs Michelin Power GP — 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 13 + 6 owner reviews. How we score
Power GP is ahead, 77–63
Add your size for an exact match
/R
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
65
Dry
Power GP +1479Why this score
Source S20 Power GP Professional tests (TWG score) ≈ 66 (est.) ≈ 75 (est.) Reviews found online 64 86 S20: 60% × 66.1 (est.) + 40% × 63.5 = 65
Power GP: 60% × 75.2 (est.) + 40% × 85.6 = 79
No road tests of dry for S20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
No road tests of dry for Power GP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
-
66
Wet
Power GP +1177Why this score
Source S20 Power GP Professional tests (TWG score) ≈ 67 (est.) ≈ 76 (est.) Reviews found online 65 80 S20: 60% × 67.5 (est.) + 40% × 64.8 = 66
Power GP: 60% × 75.5 (est.) + 40% × 79.5 = 77
No road tests of wet for S20. 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 Power GP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
65
Comfort
Power GP +1277Why this score
Source S20 Power GP Professional tests (TWG score) ≈ 68 (est.) ≈ 71 (est.) Reviews found online 64 81 S20: 40% × 67.6 (est.) + 60% × 63.5 = 65
Power GP: 40% × 71.1 (est.) + 60% × 81.1 = 77
No road tests of comfort for S20. 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 Power GP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
-
50
Treadwear
Power GP +2272Why this score
Source S20 Power GP Professional tests (TWG score) ≈ 57 (est.) ≈ 70 (est.) Reviews found online 39 75 S20: 60% × 56.7 (est.) + 40% × 39.4 = 50
Power GP: 60% × 69.7 (est.) + 40% × 75.4 = 72
No road tests of treadwear for S20. 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 Power GP. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
-
67
Handling (owners)
Power GP +1885Why this score
Source S20 Power GP Reviews found online 67 85
Scores at a glance
| Category | Bridgestone S20 | Michelin Power GP |
|---|---|---|
| Relative Score | 63 | 77 |
| Dry | 65 | 79 |
| Wet | 66 | 77 |
| Comfort | 65 | 77 |
| Treadwear | 50 | 72 |
| Handling (owners) | 67 | 85 |
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
63
/ 100
S20
77
/ 100
Power GP
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A S20
Pros
- Exceptional grip levels in both wet and dry conditions
- Progressive and predictable handling characteristics
- Strong performance during aggressive road riding and track use
Cons
- Very short tread life, particularly on high-torque motorcycles
- Rapid degradation and squaring off of the rear tire
- Front tire can be slow to reach optimal operating temperature
Tire B 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
Specs side by side
| Attribute | A · Bridgestone S20 | B · Michelin Power GP |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Motorcycle | Motorcycle |
Which one should you actually buy?
63
/ 100
Bridgestone S20
77
/ 100
Michelin Power GP
Winner: Michelin Power GP — better treadwear, handling and dry. It leads or ties in every category we score. Bridgestone S20 rests on little evidence so far (0 tests, 13 reviews), so read this result as provisional. Michelin Power GP rests on little evidence so far (0 tests, 6 reviews), so read this result as provisional.
Pick tire B
You want the longest tread life
Michelin Power GP scores 72 vs 50 on treadwear.
Pick tire B
You enjoy sharp, responsive handling
Michelin Power GP scores 85 vs 67 on handling.
Pick tire B
You want the most grip on dry roads
Michelin Power GP scores 79 vs 65 on dry.
Pick tire B
You want the most comfortable ride
Michelin Power GP scores 77 vs 65 on comfort.
Tire A · Bridgestone S20
Tire B · Michelin Power GP
TireWheelGuide may earn a commission from purchases made through these links.
S20 or Power GP?
Which is better in the wet, S20 or Power GP?
Michelin Power GP, 77 vs 66 on our wet score.
Which grips better on dry roads, S20 or Power GP?
Michelin Power GP, 79 vs 65 on our dry score.
Which is more comfortable, S20 or Power GP?
Michelin Power GP, 77 vs 65 on our comfort score.
Which lasts longer, S20 or Power GP?
Michelin Power GP, 72 vs 50 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