Dunlop GrandTrek AT20 Review

You won’t love their winter performance, but you really will love how long these tires last.


  • Impressive long life
  • Quiet and comfortable ride
  • Did we mention long tread life?


  • Very poor snow performance
  • Not really an all-terrain tire

But before we get into performance, let’s take a quick look at what these tires actually are to avoid any confusion. Dunlop clearly brands the tire with “AT20” boldly on the sidewall and the AT letters are generally used to refer to an all-terrain tire. This, however, is not really an all-terrain tire, nor does Dunlop ever really claim it is. In fact, Dunlop refers to them as just conventional all-season tires.

It does look quite aggressive, with large shoulder tread sections and a reasonable amount of void space between the treads for added off-road grip. However, it also makes use of a more conventional all-season features like a solid center rib that provides a stable highway ride and good responsiveness to steering inputs.

More along the lines of what you might find in a highway terrain tire, the tread depth is quite low and doesn’t provide great traction so we wouldn’t recommend these if you do regular off-roading or if the trails you tackle are at all challenging.

The tire makes use of Dunlop’s test technology to minimize road noise and by almost all accounts owners are pleased. The ride quality is also quite comfortable.

One of the larger complaints against these tires is their performance in snow. As all-seasons we don’t put too much weight in this critique as we always recommend proper winter tires if you live somewhere that needs them. Still, we’re compelled to point out the overwhelming criticism of these tires in snow by owners.

We should point out that these tires have been a factory fitment on the Toyota Tacoma and 4Runner for many years and as such we’re not surprised at the level of overall refinement they deliver. Automakers tend to favor on-road civility to off-road grip, even on ruck tires, knowing that the vast majority of drivers don’t venture off road.

What we are surprised by is their tread life. While the tires are backed by a 60,000 mile warranty many owners report going well beyond that number. In fact, a significant portion of reports indicate these tires could last you to 90,000 miles. Even user reviews that are highly critical of the tire do admit they wear extremely slowly.

Dunlop GrandTrek AT20 Price

Pricing for the Dunlop GrandTrek AT20 ranges from $100 per tire for a 16-inch fitment to just under $200 per tire for an 18-inch size.

Dunlop GrandTrek AT20 Warranty

Dunlop covers the GrandTrek AT20 with a 60,000 mile tread life warranty.

In addition, the tire is covered by a standard limited warranty that protects against defects in both materials and workmanship. Tires found to be defective in the first year or first 2/32-inch of tread life will be replaced free of charge. Tires with defects discovered after that time and up until six years from the date of purchase will be replaced on a pro-rated basis.

Dunlop GrandTrek AT20 Sizes

16-inch sizes

17-inch sizes

18-inch sizes