68
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
42/100
Owner ratings
Prices change daily — check the retailer for your size.
Head-to-head
Updated May 2026
Bridgestone Ecopia EP422 vs Michelin Latitude Diamaris — 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
83
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
78/100
5 owner reviews
Prices change daily — check the retailer for your size.
VerdictWinner: Michelin Latitude Diamaris — better dry, treadwear and comfort. It leads or ties in every category we score.
Read full
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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)
Latitude Diamaris leads by 25
Why this score
| Source | Ecopia EP422 | Latitude Diamaris |
|---|---|---|
| Tire Rack owners | 78 | – |
| Tyre Reviews owners | – | 95 |
Wet
Score (0–100)
Latitude Diamaris leads by 4
Why this score
| Source | Ecopia EP422 | Latitude Diamaris |
|---|---|---|
| Tire Rack owners | 76 | – |
| Tyre Reviews owners | – | 75 |
Snow
Score (0–100)
Why this score
| Source | Ecopia EP422 | Latitude Diamaris |
|---|---|---|
| Tire Rack owners | 57 | – |
Comfort
Score (0–100)
Latitude Diamaris leads by 13
Why this score
| Source | Ecopia EP422 | Latitude Diamaris |
|---|---|---|
| Tire Rack owners | 80 | – |
| Tyre Reviews owners | – | 85 |
Noise
Score (0–100)
Treadwear
Score (0–100)
Latitude Diamaris leads by 23
Why this score
| Source | Ecopia EP422 | Latitude Diamaris |
|---|---|---|
| Tire Rack owners | 70 | – |
| Tyre Reviews owners | – | 85 |
Handling
Score (0–100)
Latitude Diamaris leads by 13
Why this score
| Source | Ecopia EP422 | Latitude Diamaris |
|---|---|---|
| Tyre Reviews owners | – | 77 |
Scores at a glance
| Category | Bridgestone Ecopia EP422 | Michelin Latitude Diamaris |
|---|---|---|
| Relative Score | 68 | 83 |
| Dry | 70 | 95 |
| Wet | 71 | 75 |
| Snow | 61 | – |
| Comfort | 72 | 85 |
| Noise | 71 | – |
| Treadwear | 62 | 85 |
| Handling | 64 | 77 |
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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Neutral
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Recomputed
Headline score
68
/ 100
Tire A
83
/ 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.
Not enough owner reviews yet to extract themes.
The Michelin Latitude Diamaris is widely regarded for its exceptional tread longevity and fuel efficiency, particularly when fitted to luxury SUVs like the BMW X5. While users praise its dry-weather performance and quiet ride, opinions on wet-weather traction are polarized, with some drivers reporting concerns regarding hydroplaning in standing water.
Pros
- Exceptional tread life with many users reporting 40,000+ miles
- High fuel efficiency compared to newer successor models
- Strong dry-weather grip and handling feedback
- Quiet and comfortable ride quality
Cons
- Inconsistent wet-weather performance and susceptibility to hydroplaning
- Poor traction in snow and icy conditions
- High initial purchase price
- Traction control intervention reported in standing water
Observations
- BMW X5 owners consistently report high mileage figures, often exceeding 40,000 miles per set.
- Users suggest that the wide tire profiles (e.g., 275mm) may contribute to increased hydroplaning risks in deep standing water.
Specifications
Specs side by side
| Attribute | A · Bridgestone Ecopia EP422 | B · Michelin Latitude Diamaris |
|---|---|---|
| Category | — | Summer Ultra High Performance tires |
| Vehicle type | — | SUV and 4x4 |
Final verdict
Which one should you actually buy?
68
/ 100
Bridgestone
83
/ 100
Michelin
Winner: Michelin Latitude Diamaris — better dry, treadwear and comfort. It leads or ties in every category we score.
Pick tire B
You want the most grip on dry roads
Michelin Latitude Diamaris scores 95 vs 70 on dry.
Pick tire B
You want the longest tread life
Michelin Latitude Diamaris scores 85 vs 62 on treadwear.
Pick tire B
You want the most comfortable ride
Michelin Latitude Diamaris scores 85 vs 72 on comfort.
Pick tire B
You enjoy sharp, responsive handling
Michelin Latitude Diamaris scores 77 vs 64 on handling.
Tire A · Bridgestone Ecopia EP422
Tire B · Michelin Latitude Diamaris
More comparisons
Also compared with
Bridgestone Ecopia EP422 also compared with
Michelin Latitude Diamaris 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.