All-terrain tire All-Terrain Updated November 2026

Dunlop Grandtrek AT20 review

Name: Dunlop Grandtrek AT20
Brand: Dunlop

± 7

Relative score from owner reviews only

Owners 33 · 59 reviews analysed

How scores work

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Dunlop Grandtrek AT20 has a Relative Score of 45 out of 100 among all-terrain tires. 59 owner reviews rate it 33 out of 100. 37% would buy it again.

What owners say

No road-test results yet, so every score here comes from owner reviews found online.

How scores work

Relative score: 0–100. Blends road tests (60%) and owner reviews (40%) category by category, the same way on every TireWheelGuide page. With only one of the two, the missing half is estimated from it, so the score stays closer to average. It needs at least one road test or five owner reviews.
Road tests: 0–100 per score, from published tests, newer tests counting more. Each result is compared with every other tire in the same test, so a win against a strong field counts for more. The average tested tire gets 70, the best 100; with only one or two tests a tire stays nearer 70. The discipline rows show % of the best tire in that test.
Owner reviews: 0–100 from the owner reviews we found online, adjusted for how generously each site rates and scaled like the road tests: the average tested tire gets 70. With only a few reviews a tire stays near the average.

Full methodology

By owner reviews

33/100

From 59 owner reviews analysed, scaled like the road tests: the average tested tire gets 70.

Would buy again 37%

Dry

Overall dry

Wet

Overall wet

Snow & ice

Overall snow & ice

Comfort

Overall comfort

Noise

Overall noise

Treadwear

Overall treadwear

Handling

Overall handling

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What owners like and dislike

Themes extracted from 59 owner reviews found online.

The Dunlop Grandtrek A/T20 receives sharply polarized reviews, frequently serving as original equipment on popular SUVs and 4WD trucks like the Toyota Land Cruiser, Prado, and 4Runner. While a segment of users praises its impressive longevity, quiet highway ride, and decent dry-road handling, a significant majority strongly criticize its dangerous lack of grip in wet, snowy, or icy conditions and its poor performance off-road.

Pros

Exceptional tread life and high mileage capability (often exceeding 40,000 to 60,000+ miles)
Comfortable, smooth, and quiet ride on tarmac and highways
Good stability and predictable handling in dry, warm weather conditions
Affordable pricing and solid value when purchased through online retailers

Cons

Extremely poor and potentially unsafe traction on wet roads, leading to sliding and long braking distances
Unreliable or hazardous performance in winter conditions like snow and ice
Subpar off-road capabilities, including low puncture resistance on gravel and poor traction in mud or sand
Uneven wear patterns, such as premature shoulder baldness

Worth knowing

Frequently reported as factory original equipment (OE) on heavy 4WD vehicles and rugged SUVs like Toyota Land Cruisers, Prados, 4Runners, and Mitsubishi Tritons/Shoguns.
Drivers of heavy-duty utility vehicles note that while highway fuel economy and low noise are acceptable, the tire compromises the capability expected from a true 4x4 off-road vehicle.