All-terrain tyres for the 2021-on Isuzu D-Max: options compared

For a D-Max that spends most of its time on the road, start with a suitable all-terrain in its existing approved size. For a heavier touring build, compare exact LT specifications against the vehicle's load. Bigger tyres and heavier construction are separate decisions.

Our four-brand shortlist is Falken Wildpeak A/T4W, BFGoodrich KO3, Maxxis RAZR AT811 and Toyo Open Country A/T III. The Toyo needs a particular rim-width check on some factory 18-inch wheels before it can be treated as an eligible purchase.

This guide concerns ordinary Australian third-generation 4x4 D-Max models from MY2021. BLADE and other conversions need their own specifications.

Start with the wheels already on your ute

Isuzu's MY25.5 sheet documents 255/65R17 on seven-inch wheels and 265/60R18 on 7.5-inch wheels across ordinary grades. Check your model year before using those examples.

If the wheels are staying, eliminate tyres outside their permitted rim range first. This is more useful than choosing a favourite brand and asking the fitter to accommodate it.

The shortlist

Falken Wildpeak A/T4W: the first option we would investigate for a lightly equipped D-Max retaining the cited 18-inch package. Falken's Australian table lists a 265/60R18 XL version with a rim range that includes 7.5 inches. That is a useful dimensional starting point, not complete vehicle approval or a claim of superior wet grip.

BFGoodrich All-Terrain T/A KO3: put the KO3 into the comparison if you want an alternative all-terrain construction and tread. Ask the supplier to nominate an exact D-Max-suitable size, load and speed rating. A quote that simply says 'KO3s' is incomplete.

Maxxis RAZR AT811: include the AT811 as another locally documented option. Check the specific wheel approval and construction. It is a candidate for comparison, not a proven budget winner without a comparable fitted quote.

Toyo Open Country A/T III: a conditional candidate. The linked Australian brochure lists an eight-inch minimum rim for LT265/60R18 119S. That conflicts with retaining a 7.5-inch factory rim. Obtain current written approval for the exact SKU or choose another compatible option. Do not quietly assume the same size notation settles it.

Do not confuse a dimensional match with a test win

The 2026 Tyre Reviews test identified wet-road weaknesses in its tested A/T4W. Our Falken starting point is based on the published rim range, not a road-performance victory. Investigate alternatives if wet grip is the main priority.

What we would choose by use

For daily driving with gravel-road trips, start with a compatible factory-size option and ask for road-performance evidence. The right answer may preserve the original wheels.

For a canopy, drawers and regular towing, supply actual axle loads and compare suitable construction and pressures. The tyre decision should follow the finished load plan.

For a new wheel-and-tyre build, settle wheel diameter, width and offset alongside the tyre. Changing to 17-inch wheels needs its own clearance assessment; it is not automatically an improvement.

We have not run a same-size, same-D-Max comparative test, so this is a buying shortlist rather than a measured ranking.

Before increasing size

Read the D-Max 33-inch guide. A tread upgrade does not require the maximum tyre diameter, and a 33-inch label conceals meaningful differences between products.

Compare five-tyre installed quotes where a matching spare is needed. Ask about balancing, tyre-pressure monitoring, alignment and any additional wheel costs. Check modification requirements before changing the vehicle's specification.

Once you have compatible candidates, see the look on your D-Max. Make the appearance decision with your vehicle in view, then have the fitter confirm the physical setup.