80
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
80/100
9 owner reviews
Prices change daily — check the retailer for your size.
Head-to-head
Updated May 2026
Dunlop Grandtrek ST20 vs Goodyear Assurance All-Season — 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
84
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
87/100
48 owner reviews
Prices change daily — check the retailer for your size.
VerdictWinner: Goodyear Assurance All-Season — better comfort, dry and wet. Pick the Dunlop Grandtrek ST20 if handling matters 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)
Assurance All-Season leads by 11
Why this score
| Source | Grandtrek ST20 | Assurance All-Season |
|---|---|---|
| Tire Rack owners | – | 82 |
| Tyre Reviews owners | 81 | 80 |
| SimpleTire owners | – | 93 |
Wet
Score (0–100)
Assurance All-Season leads by 9
Why this score
| Source | Grandtrek ST20 | Assurance All-Season |
|---|---|---|
| Tire Rack owners | – | 71 |
| Tyre Reviews owners | 78 | 75 |
| SimpleTire owners | – | 88 |
Snow
Score (0–100)
Why this score
| Source | Grandtrek ST20 | Assurance All-Season |
|---|---|---|
| Tire Rack owners | – | 59 |
| Tyre Reviews owners | – | 30 |
| SimpleTire owners | – | 75 |
Comfort
Score (0–100)
Assurance All-Season leads by 13
Why this score
| Source | Grandtrek ST20 | Assurance All-Season |
|---|---|---|
| Tire Rack owners | – | 74 |
| Tyre Reviews owners | 77 | 85 |
| SimpleTire owners | – | 91 |
Noise
Score (0–100)
Why this score
| Source | Grandtrek ST20 | Assurance All-Season |
|---|---|---|
| SimpleTire owners | – | 89 |
Treadwear
Score (0–100)
Assurance All-Season leads by 1
Why this score
| Source | Grandtrek ST20 | Assurance All-Season |
|---|---|---|
| Tire Rack owners | – | 69 |
| Tyre Reviews owners | 83 | 20 |
| SimpleTire owners | – | 87 |
Handling
Score (0–100)
Grandtrek ST20 leads by 14
Why this score
| Source | Grandtrek ST20 | Assurance All-Season |
|---|---|---|
| Tyre Reviews owners | 79 | 65 |
Scores at a glance
| Category | Dunlop Grandtrek ST20 | Goodyear Assurance All-Season |
|---|---|---|
| Relative Score | 80 | 84 |
| Dry | 81 | 92 |
| Wet | 78 | 87 |
| Snow | – | 73 |
| Comfort | 77 | 90 |
| Noise | – | 89 |
| Treadwear | 83 | 84 |
| Handling | 79 | 65 |
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.
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Recomputed
Headline score
80
/ 100
Tire A
84
/ 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 Dunlop Grandtrek ST20 is generally regarded as a reliable and durable original equipment tire, particularly favored by owners of compact and mid-size SUVs. While users consistently praise its longevity and predictable handling in mixed weather conditions, some report concerns regarding sidewall cracking over time and a noticeable decline in wet-weather performance as the tread depth approaches the legal limit.
Pros
- Impressive tread life and overall durability
- Consistent and predictable handling in mixed weather conditions
- Strong performance for light off-road and towing applications
- Good value proposition as an original equipment replacement
Cons
- Noticeable reduction in wet grip at lower tread depths (below 3mm)
- Tendency for sidewalls to develop cracks or crazing over time
- Increased road noise on rough or concrete surfaces
- Uneven shoulder wear reported by some users
Observations
- Owners of shorter-wheelbase vehicles like the Daihatsu Terios noted potential bounciness, though it was unclear if this was tire-specific or vehicle-geometry related.
- The tire is frequently cited as a preferred original equipment choice for Nissan SUVs, with users often opting to repurchase the same model after the initial set wears out.
The Goodyear Assurance All Season is widely regarded as a budget-friendly, comfortable, and quiet tire suitable for daily commuting in moderate climates. While many users report excellent longevity and value, a notable segment of the user base experiences significant premature tread wear and subpar performance in heavy snow or icy conditions.
Pros
- High level of ride comfort and low road noise
- Excellent value for the price point
- Reliable dry and wet weather traction for non-aggressive drivers
- Strong tread life for many users, with some reporting over 60,000 miles
Cons
- Inconsistent tread life, with reports of premature wear well before the warranty limit
- Poor performance in winter conditions, specifically on ice and deep snow
- Occasional reports of vibration and balance issues immediately after installation
- Reduced traction during heavy rain compared to premium alternatives
Observations
- Users on mid-size SUVs like the Toyota RAV4 and Honda CR-V generally report high satisfaction regarding ride quality and noise levels.
- Drivers of heavier vehicles or those in mountainous, snowy regions report that the tire struggles to maintain grip, suggesting it is better suited for flat, temperate environments.
Specifications
Specs side by side
| Attribute | A · Dunlop Grandtrek ST20 | B · Goodyear Assurance All-Season |
|---|---|---|
| Category | All Season Premium Touring tires | — |
| Vehicle type | SUV and 4x4 | — |
| Sizes available | — | 51 |
| Rim diameters | — | 14″ – 20″ |
| Tread depth | — | 9/32″ |
| UTQG | — | 600 A B |
| Treadwear warranty | — | 65,000 mi |
| Sidewall | — | Blackwall |
| Max pressure | — | 51 psi |
Final verdict
Which one should you actually buy?
80
/ 100
Dunlop
84
/ 100
Goodyear
Winner: Goodyear Assurance All-Season — better comfort, dry and wet. Pick the Dunlop Grandtrek ST20 if handling matters most to you.
Pick tire A
You enjoy sharp, responsive handling
Dunlop Grandtrek ST20 scores 79 vs 65 on handling.
Pick tire B
You want the most comfortable ride
Goodyear Assurance All-Season scores 90 vs 77 on comfort.
Pick tire B
You want the most grip on dry roads
Goodyear Assurance All-Season scores 92 vs 81 on dry.
Pick tire B
Your priority is wet-weather safety
Goodyear Assurance All-Season scores 87 vs 78 on wet.
Tire A · Dunlop Grandtrek ST20
Tire B · Goodyear Assurance All-Season
More comparisons
Also compared with
Dunlop Grandtrek ST20 also compared with
Goodyear Assurance All-Season 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.