77
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
79/100
12 owner reviews
Prices change daily — check the retailer for your size.
Head-to-head
Updated May 2026
Bridgestone Alenza AS Ultra vs Dunlop GEOMAX MX51 — Compared (May 2026)
Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.
VS
85
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
87/100
1 owner review
Prices change daily — check the retailer for your size.
VerdictWinner: Dunlop GEOMAX MX51 — better treadwear and dry. Pick the Bridgestone Alenza AS Ultra if handling and wet matter most to you.
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Category breakdown
7 categories, side by side
Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.
Dry
Score (0–100)
GEOMAX MX51 leads by 12
Why this score
| Source | Alenza AS Ultra | GEOMAX MX51 |
|---|---|---|
| Tire Rack owners | 91 | – |
| Tyre Reviews owners | 82 | 100 |
Wet
Score (0–100)
Alenza AS Ultra leads by 3
Why this score
| Source | Alenza AS Ultra | GEOMAX MX51 |
|---|---|---|
| Tire Rack owners | 88 | – |
| Tyre Reviews owners | 76 | 80 |
Snow
Score (0–100)
Why this score
| Source | Alenza AS Ultra | GEOMAX MX51 |
|---|---|---|
| Tire Rack owners | 78 | – |
| Tyre Reviews owners | 68 | – |
Comfort
Score (0–100)
Why this score
| Source | Alenza AS Ultra | GEOMAX MX51 |
|---|---|---|
| Tire Rack owners | 85 | – |
| Tyre Reviews owners | 74 | – |
Noise
Score (0–100)
Treadwear
Score (0–100)
GEOMAX MX51 leads by 24
Why this score
| Source | Alenza AS Ultra | GEOMAX MX51 |
|---|---|---|
| Tire Rack owners | 78 | – |
| Tyre Reviews owners | 55 | 90 |
Handling
Score (0–100)
Alenza AS Ultra leads by 4
Why this score
| Source | Alenza AS Ultra | GEOMAX MX51 |
|---|---|---|
| Tyre Reviews owners | 74 | 70 |
Scores at a glance
| Category | Bridgestone Alenza AS Ultra | Dunlop GEOMAX MX51 |
|---|---|---|
| Relative Score | 77 | 85 |
| Dry | 88 | 100 |
| Wet | 83 | 80 |
| Snow | 81 | – |
| Comfort | 83 | – |
| Noise | 80 | – |
| Treadwear | 66 | 90 |
| Handling | 74 | 70 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Neutral
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Recomputed
Headline score
77
/ 100
Tire A
85
/ 100
Tire B
Only categories both tires have data for count toward the headline score.
From owners
Pros, cons & observations
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
The Bridgestone Alenza AS Ultra presents a polarized user experience, characterized by a significant divide between those praising its wet and dry handling performance and those disappointed by its longevity and noise levels. While some users report exceptional tread life and reliable all-season traction, others cite premature wear and intrusive road noise, suggesting that performance may vary significantly based on vehicle application and driving conditions.
Pros
- Strong traction on both wet and dry road surfaces
- Improved ride comfort and handling compared to some factory-installed alternatives
- Capable performance in varied weather conditions for some users
- High durability reported by long-term users
Cons
- Reports of premature tread wear and short service life
- Noticeable road noise compared to other premium tires
- Inconsistent performance in severe winter conditions, particularly on ice and deep snow
- Potential for reduced fuel economy
Observations
- Users on heavy SUVs and trucks report mixed results, with some achieving high mileage while others experience rapid tread degradation.
- Drivers transitioning from OEM tires, such as the Bridgestone Ecopia, have noted a distinct increase in cabin noise levels.
- Regular maintenance, specifically rotations every 5,000 miles, is highlighted as critical for maximizing the lifespan of this tire.
The Dunlop Geomax MX51 is highly regarded for its superior traction and durability compared to its predecessor, the D756. Users report excellent performance in sandy conditions with minimal signs of tread wear even after extended use.
Pros
- Enhanced grip and bite for both front and rear tires
- Exceptional durability and longevity in sandy terrain
- Significant performance improvement over previous models
Observations
- Performance is specifically noted as highly effective in sandy riding conditions.
Specifications
Specs side by side
| Attribute | A · Bridgestone Alenza AS Ultra | B · Dunlop GEOMAX MX51 |
|---|---|---|
| Category | All Season Premium Touring tires | All Season Motocross and Enduro tires |
| Vehicle type | — | Motorcycle |
| Sizes available | 46 | — |
| Rim diameters | 16″ – 22″ | — |
| Tread depth | 10/32″ | — |
| UTQG | 800 A A | — |
| Treadwear warranty | 80,000 mi | — |
| Sidewall | Blackwall | — |
| Max pressure | 44 psi | — |
Final verdict
Which one should you actually buy?
77
/ 100
Bridgestone
85
/ 100
Dunlop
Winner: Dunlop GEOMAX MX51 — better treadwear and dry. Pick the Bridgestone Alenza AS Ultra if handling and wet matter most to you.
Pick tire B
You want the longest tread life
Dunlop GEOMAX MX51 scores 90 vs 66 on treadwear.
Pick tire B
You want the most grip on dry roads
Dunlop GEOMAX MX51 scores 100 vs 88 on dry.
Pick tire A
You enjoy sharp, responsive handling
Bridgestone Alenza AS Ultra scores 74 vs 70 on handling.
Pick tire A
Your priority is wet-weather safety
Bridgestone Alenza AS Ultra scores 83 vs 80 on wet.
Tire A · Bridgestone Alenza AS Ultra
Tire B · Dunlop GEOMAX MX51
More comparisons
Also compared with
Bridgestone Alenza AS Ultra also compared with
Dunlop GEOMAX MX51 also compared with
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.
Community buzz from Reddit and forums is shown for context only — it never changes the score.