Choosing tyres leaving you confused? Click here to let our experts do personalised research for you
Dunlop Grandtrek AT20

Dunlop Grandtrek AT20 Review - Our Honest Opinion [2024]

Here are the key stats for the Grandtrek AT20, at a glance.
Key Info - Australia
Vehicle SuitabilityLight Truck / SUV
Driving StyleHighway All-Season
SeasonAll Season
Release Date2006
Run Flat?No
Overall Score67/100

Pricing

Enter your tyre size below to see the best prices for your specific size (if unsure, check placard on the driver's side door or your existing tyres).

GET $25 OFF at Mobile Tyre Shop

Use the button below and the coupon code REWARD25 to get $25 off any tyres at Mobile Tyre Shop!

GET 10% OFF at Tyroola

Use the button below and the coupon code SCATYRE10 to get 10% off any tyres at Tyroola!

Dunlop Grandtrek AT20 in Australia

This offering by Dunlop has been around in Australia for about 18 years. Especially designed for 4WDs, SUVs and light trucks, it comes in a total of 16 sizes.

This highway all-season tyre is a solid option for those looking for an all season tyre in the premium end of the market. Note that it is not a runflat tyre.

Read on to see how it stacks up against the competition!

How We Reviewed The Grandtrek AT20 Tyres

Unlike the Australian government, the European Union carries out standardised tests on all tyres sold in Europe. These tests are carried out in identical conditions, making them a reliable way to compare tyres.

For this review, we use averaged results from tests done on 10 sizes of the Grandtrek AT20 tyres by the European Union.

We then compare these to the same results for the following similar tyres, also rated for Highway All-Season usage and sold in Australia.

Fuel Efficiency

EU GradeCompared to an A grade tyre?
Fuel Efficiency
(A - E)
C0.2L/100km extra fuel consumption. ~$55 extra per year

The US Department of Energy estimates that around 25% of the fuel consumption of a vehicle is attributable to the tyres. That's a lot, and it means that choosing fuel efficient tyres can save you quite a bit of money.

The Grandtrek AT20 tyres rank a C on a scale of A to E in the official fuel efficiency tests carried out by the EU (they call these rolling resistance tests).

Relative to an A grade tyre, expect to use an extra 0.2L/100km. This works out to $55 extra spent on petrol per year, based on a typical 12,000 km driven per year.

Comparison

Here's how the Grandtrek AT20 compares to similar tyres for fuel efficiency (1 = Grade E, 5 = Grade A).

Based on the comparison tyres we've selected, the Grandtrek AT20 ranked # out of 0 tyres.

Grip & Handling

EU GradeCompared to an A grade tyre?
Wet Grip
(A - E)
D7.5 metre greater stopping distance when braking at 80km/h

We'll now take a look at how these tyres compare in terms of grip and handling.

A good measure of this is 'wet grip', which is an indication of how well the tyres will allow the vehicle to come to a stop in wet conditions.

The Grandtrek AT20 tyres rank a D on a scale of A to E in the official fuel tests carried out by the EU.

Relative to an A grade tyre, expect these tyres to require about an extra 7.5 metres to come to a complete stop when braking at 80km/h.

Comparison

Here's how the Grandtrek AT20 compares to similar tyres for wet grip (1 = Grade E, 5 = Grade A).

For wet grip, they scored # out of 0 comparison tyres.

Noise

EU GradeCompared to an A grade tyre?
Noise
(A - C)
B (71 dB)2 times as noisy

Another key factor to consider when choosing a tyre is road noise. Once you're over about 40 km/h, the dominant source of noise you hear is from the contact of your tyres on the road.

There is a surprisingly wide variation in the amount of noise each tyre makes.

The Grandtrek AT20 tyres produce 71.3 dB of road noise, which corresponds to a rank of B on a scale of A to C in the standardised testing done by the EU.

Expect these tyres to produce about 2 times as much noise as an A grade tyre (the decibel scale is logarithmic).

Comparison

Here's how the Grandtrek AT20 compares to similar tyres for noise (1 = Grade C, 3 = Grade A).

For noise, they ranked # out of 0 comparison tyres.

Comfort

Based on the results of a number of tyre benchmarks, including those below, the Grandtrek AT20 scores 4 out of 5 for comfort.

Treadwear

With a UTQG treadwear rating of 300, the Grandtrek AT20 would theoretically last 3 times longer than a tyre with a treadwear rating of 100.

Traction

The UTQG system measures traction as straight-line braking in dry conditions. The scale is AA, A, B, C, with AA being the best grade, and C the worst.

These tyres score a grade of B.

Temperature Resistance

The UTQG temperature resistance tests measure how well tyres can dissipate heat that builds up due to friction with the road. The scale is A, B, C, with A being the highest grade.

These tyres score a grade of B.

Warranty

We don't have any warranty data for this tyre, unfortunately. Know how long the warranty period is? Let us know over at the contact page.

Comparisons With Similar Tyres

Still undecided as to whether to go with these highway all-season tyres? Check out our data-driven comparisons to similar tyres on the market in Australia!

Summary

With an overall rating of 67 out of 100, the Grandtrek AT20 tyres are a solid choice for anyone looking to replace their SUV or truck rubber with some tyres designed for highway all-season action.

For fuel efficiency, they score a grade of C, which is more or less average, though this isn't a super important factor.

More important is the wet grip, which gives you an indication of their traction and handling. In this regard, they get a score of D, which is below average.

Finally, for road noise, they receive a B grade, which is about typical.

In terms of data out of the US, they have the following UTQG ratings:

  • Treadwear: 300
  • Traction: B (scale: AA, A, B, C)
  • Temperature Resistance: B (scale: A, B, C)

Full Size List (click to show)

Below is a list of all 16 sizes of the Grandtrek AT20 tyres sold in Australia, sorted by tyre width. Select your preferred size to compare prices across multiple suppliers.

Size
195/80 R15 96S
205 R16 110R
225/70 R17 108S
225/60 R18 99H
235/70 R16 104S
245/70 R17 108S
245/70 R16 111S XL
245/75 R16 109S
245/70 R17 110S
245/65 R17 111S
255/70 R17 108S
255/70 R16 111T
265/60 R18 110H
265/70 R17 113S
265/70 R16 112S
265/65 R17 112S
Louis from Tyre Geek

Louis

I'm Louis, an engineer passionate about helping Australians choose better tyres for their vehicles!