Gravel Road Driving: Tyre Choice and Technique

Australia has more unsealed road than sealed, and most of it is gravel or formed dirt rather than hardcore 4WD track. A family SUV or ute will handle a well-maintained gravel road comfortably — provided the tyres suit it and your technique respects the surface. This guide covers tyre choice, pressure, and the driving habits that keep your rubber and your windscreen intact.

What tyres are best for gravel and dirt roads in Australia?

For occasional gravel on a touring route, a quality highway-terrain (H/T) or touring tyre in good condition is usually fine. For regular unsealed running — station tracks, remote shires, outback touring — an all-terrain (A/T) tyre is the sensible step up. The two things that matter most on gravel are sidewall toughness and tread chunkiness: wider tyres with a chunkier pattern give better traction on loose surfaces, and a stronger sidewall resists the sharp-edged stone that causes most unsealed-road punctures.

If your travels take you onto sharp rock or gibber plains, tyre construction matters even more — see our guide to tyre choice for sharp rock and gibber country. And because loose stone and kerbs chew the lower sidewall, a tyre with a rim-protector lip earns its keep off the black-top. For the classic outback corrugation routes, our picks are in best tyres for outback corrugations.

Should you lower tyre pressure on gravel roads?

Often, yes — but less than people assume, and never below the point where the tyre feels vague. A small reduction lets the tyre absorb corrugations and flex over sharp edges instead of splitting on them. Drop too far and you lose steering response and stability at speed, and you build dangerous heat. Cooper Tires Australia’s tyre pressure guide frames the trade-off well: on fast, smooth gravel keep pressures firmer for control; on slow, rough gravel soften slightly to resist chipping, but cut your speed as pressure falls to limit heat build-up.

The figures below are a general guide for 2026 and apply to light-truck-construction tyres; your correct pressures depend on vehicle weight, load and tyre size, so confirm with a fitter and adjust to how the car actually handles.

Below roughly 20 psi a road tyre risks rolling off the rim, so treat that as a hard limit unless you are running beadlocks or deliberate sand pressures. The warm-pressure “four-pounds” check is unreliable on rough surfaces because corrugations heat the tyre unevenly — set pressures cold before you leave, and always re-inflate to your placard figure before returning to sealed roads and highway speeds. For the specifics of shaking surfaces, see tyre pressures for corrugated dirt roads.

How should you drive on loose gravel and corrugations?

Gravel offers a fraction of the grip of bitumen, so smoothness is everything. The NRMA’s advice for driving on dirt is to brake and accelerate gently, avoid braking mid-corner, and drive on the packed part of the road — usually near the crown in the centre — easing across before oncoming traffic. Slow down well before bends and crests where you can’t see what’s coming.

Corrugations have a “sweet spot” speed: too slow and the car shudders constantly; too fast and the tyres skip across the ridges and lose contact, which is how drivers lose control. Find a steady speed where the ride smooths out, and keep it — don’t chase corners at that speed. If you start to skid, stay calm, ease off the accelerator, steer gently where you want to go, and don’t stab the brakes.

How do you protect tyres and windscreen from stone damage?

Most gravel damage isn’t dramatic — it’s a flung stone through a windscreen or a slow chip-induced leak days later. Leave a very large following gap, far more than on sealed road, so stones thrown up by the vehicle ahead fall short of your glass. Slow right down when passing oncoming traffic, both for the dust and the stone spray. If visibility drops in a dust cloud, it’s better to pull over for a minute and let it settle than to drive blind — fine bull dust also hides washouts and sharp debris. After any long gravel run, check your windscreen for chips and your tyres for cuts, embedded stones and bulges before you hit the highway again.

Frequently asked questions

Do I need to let my tyres down for a gravel road?

On a well-formed gravel road at touring speeds, often no reduction is needed. On rough or sharp gravel a small drop helps the tyre flex over edges, but keep enough pressure for steering control and reduce speed to manage heat. Re-inflate to placard before returning to bitumen.

Are all-terrain tyres worth it just for gravel?

If you only see gravel a few times a year, a quality highway or touring tyre is usually enough. If you regularly drive unsealed roads, an all-terrain’s tougher sidewall and chunkier tread reduce punctures and improve traction enough to justify the small loss in road refinement.

What tyre pressure is too low on gravel?

For a normal road tyre, below about 20 psi the tyre can unseat from the rim under cornering load. Around 22 psi is a practical floor for most vehicles on rocky gravel. Sand is a special case with its own much-lower figures and strict re-inflation rules.

Why did my windscreen crack on a dirt road I was driving carefully on?

Almost always a stone flicked up by another vehicle. Following too closely is the usual cause — stones lose energy quickly, so a large gap behind the car ahead is the single best protection, along with slowing for oncoming traffic.