Tests 74 · 2 tests Owners 75 · 33 reviews
Best test result: #1 of 9 in 2025 Tire Rack All Terrain Tyre Test (dry braking)
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 2 + 0 road tests and 33 + 58 owner reviews. How we score
TerrainContact A/T is ahead, 74–44
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Tests 74 · 2 tests Owners 75 · 33 reviews
Best test result: #1 of 9 in 2025 Tire Rack All Terrain Tyre Test (dry braking)
Tests – · none yet Owners 33 · 58 reviews
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | TerrainContact A/T | Grandtrek AT20 |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 76 | ≈ 51 (est.) |
| Reviews found online | 79 | 26 |
TerrainContact A/T: 60% × 76.5 + 40% × 78.5 = 77
Grandtrek AT20: 60% × 50.5 (est.) + 40% × 25.5 = 41
No road tests of dry for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
| Source | TerrainContact A/T | Grandtrek AT20 |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 77 | ≈ 48 (est.) |
| Reviews found online | 84 | 30 |
TerrainContact A/T: 60% × 77.2 + 40% × 83.6 = 80
Grandtrek AT20: 60% × 48.4 (est.) + 40% × 29.8 = 41
No road tests of wet for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.54).
| Source | TerrainContact A/T | Grandtrek AT20 |
|---|---|---|
| Professional tests (TWG score) | ≈ 68 (est.) | ≈ 59 (est.) |
| Reviews found online | 61 | 35 |
TerrainContact A/T: 60% × 67.5 (est.) + 40% × 61.1 = 65
Grandtrek AT20: 60% × 59.3 (est.) + 40% × 35.1 = 50
No road tests of snow for TerrainContact A/T. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
No road tests of snow for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
| Source | TerrainContact A/T | Grandtrek AT20 |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 72 | ≈ 61 (est.) |
| Reviews found online | 73 | 29 |
TerrainContact A/T: 40% × 72.3 + 60% × 72.6 = 72
Grandtrek AT20: 40% × 61.4 (est.) + 60% × 28.8 = 42
No road tests of comfort for Grandtrek AT20. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
| Source | TerrainContact A/T | Grandtrek AT20 |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 81 | ≈ 66 (est.) |
| Reviews found online | 74 | 38 |
TerrainContact A/T: 60% × 81.5 + 40% × 74.3 = 79
Grandtrek AT20: 60% × 66.5 (est.) + 40% × 38.3 = 55
No road tests of noise for Grandtrek AT20. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
| Source | TerrainContact A/T | Grandtrek AT20 |
|---|---|---|
| Professional tests (TWG score) · 1 / – tests | 67 | ≈ 58 (est.) |
| Reviews found online | 70 | 41 |
TerrainContact A/T: 60% × 66.9 + 40% × 69.9 = 68
Grandtrek AT20: 60% × 57.7 (est.) + 40% × 41.2 = 51
No road tests of treadwear for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
| Source | TerrainContact A/T | Grandtrek AT20 |
|---|---|---|
| Reviews found online | 74 | 30 |
| Category | Continental TerrainContact A/T | Dunlop Grandtrek AT20 |
|---|---|---|
| Relative Score | 74 | 44 |
| Dry | 77 | 41 |
| Wet | 80 | 41 |
| Snow | 65 | 50 |
| Comfort | 72 | 42 |
| Noise | 79 | 55 |
| Treadwear | 68 | 51 |
| Handling (owners) | 74 | 30 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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.
TerrainContact A/T
Grandtrek AT20
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
| Attribute | A · Continental TerrainContact A/T | B · Dunlop Grandtrek AT20 |
|---|---|---|
| Category | All-Terrain tire | All-Terrain tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 30 | 9 |
| Rim diameters | 16″ – 22″ | 15″ – 18″ |
| Tread depth | 10 - 16/32″ | — |
| UTQG | 680 A A - B | — |
| Treadwear warranty | 60,000 mi | — |
| Sidewall | Black Side Wall - Raised Outline White Lettering | Blackwall |
| Max pressure | 44 - 80 psi | — |
| Sizes in common | 4 | 4 |
Continental TerrainContact A/T
Dunlop Grandtrek AT20
Winner: Continental TerrainContact A/T — better handling, wet and dry. It leads or ties in every category we score.
Continental TerrainContact A/T scores 74 vs 30 on handling.
Continental TerrainContact A/T scores 80 vs 41 on wet.
Continental TerrainContact A/T scores 77 vs 41 on dry.
Continental TerrainContact A/T scores 72 vs 42 on comfort.
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Continental TerrainContact A/T, 80 vs 41 on our wet score.
Continental TerrainContact A/T, 77 vs 41 on our dry score.
Continental TerrainContact A/T, 65 vs 50 on our snow score.
Continental TerrainContact A/T, 79 vs 55 on our noise score.
Continental TerrainContact A/T, 72 vs 42 on our comfort score.
Continental TerrainContact A/T, 68 vs 51 on our treadwear score.
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