Soft sand is the one surface where tyre pressure matters more than tyre choice, more than diff locks, more than how much money you’ve spent on the 4WD. Get the pressure right and a stock dual-cab will float across a beach that bogs a fully-built tourer running road pressures. This guide covers the pressures, the technique and the self-recovery basics that keep you moving — and out of the surf.

Why do you let your tyres down for sand?

Dropping pressure lets the tyre spread out and lengthen its contact patch, so the vehicle’s weight is carried over far more sand. A long, flat footprint floats; a short, hard one digs a trench. At road pressure a tyre on sand is like a knife edge — it cuts straight down and bogs. Airing down is free, instant, and the single most effective thing you can do, which is why it comes before any talk of tread pattern. Our detailed guide to the correct tyre pressures for sand driving breaks the numbers down further, and the four-pounds rule is a handy sanity check for how much heat you’re putting into the tyre.

What tyre pressure should you run on sand?

There’s no single magic number — it depends on vehicle weight, tyre size and how soft the sand is — but these are widely used starting points. Treat them as a guide and adjust to conditions.

Parks Queensland’s official advice is simpler and worth keeping in mind at managed beaches: reduce pressure for soft sand but stay within the manufacturer’s specifications, and always carry a gauge and pump so you can re-inflate before returning to normal roads. Follow any posted tyre-pressure signs at the beach entry.

How low is too low?

The limiting factor at the bottom end isn’t traction — it’s the bead. At very low pressure, a sharp turn, hard brake or sudden stab of throttle can peel the tyre off the rim, and you’ll be refitting a bead on a beach with the tide coming in. Big-diameter rims with low-profile tyres are more prone to this than a tall-sidewall touring setup. If you drop to single digits to escape a bog, keep speed under about 35–40 km/h, steer and brake gently, and re-inflate to a safer 16–20 psi the moment you’re moving freely again. This is the opposite of a bull dust situation, where you should not air down — don’t confuse the two surfaces.

What’s the technique for driving on sand?

Pressure gets you floating; technique keeps you there.

• Momentum is your friend. Keep a steady, moderate speed in a gear that holds revs without labouring. Let the vehicle glide rather than lurch.
• Be gentle on everything. Smooth throttle, smooth steering, no hard braking. Abrupt inputs break traction and dig you in.
• Follow existing wheel ruts where they run your way — the sand is already compacted.
• Do the roll test. Lift off the accelerator; the vehicle should coast a couple of metres. If it stops dead and squats, you need more air out.
• Read the tide. Drive on the firmer sand between the waterline and the high-tide mark, keep off the dunes, and travel at low tide or within two hours either side of it.
• Engage low range and any traction aids before you get stuck, not after.

If you’ve not yet chosen rubber for sand and beach work, see our pick of the best tyres for beach driving and the broader all-terrain vs mud-terrain comparison — for sand, a flexible all-terrain usually beats an aggressive mud-terrain.

How do you recover a bogged 4WD?

Everyone gets stuck eventually. The calm, safe sequence:

1. Stop spinning the wheels immediately — spinning digs you deeper and heats the tyres.
2. Let more air out. Dropping from 20 to 15 psi removes about a quarter of the air and often floats you straight out.
3. Clear the sand from in front of each tyre and flatten a ramp with a shovel.
4. Use traction boards under the drive wheels and drive out gently.
5. Snatch straps and winches are a last resort and genuinely dangerous — Parks Queensland warns that tow ropes and snatch straps should only be used by trained operators with appropriately rated equipment, and rangers can’t help with recovery.

In remote areas, travel with at least one other vehicle and tell someone your route and expected return time. A compressor, gauge, shovel, traction boards and a rated recovery kit are the minimum — our guide to the best portable air compressors covers what to carry.

Re-inflating after a sand drive

Driving any distance on bitumen at sand pressures overheats the tyres, chews the shoulders and risks a bead roll in a corner, so re-inflate to road pressure before you leave the sand. Reinflation points — servos and dedicated air stations near popular beaches — are covered in our guide to where to find air after a beach drive. Carry your own compressor and you’re never stranded waiting for one.

Frequently asked questions

What tyre pressure is best for sand driving?
Around 16 psi is a common starting point for soft-sand beach driving in a typical 4WD, dropping lower only if you’re struggling. Firm damp sand may need only 18–20 psi; light vehicles often start near 12 psi. These are guides — adjust to your vehicle’s weight and the sand, and follow any posted signs.

Can you go too low on tyre pressure?
Yes. Below about 15 psi the risk of rolling a tyre off the rim climbs steeply, especially in sharp turns or under hard braking, and worse on big rims. If you drop into single digits to escape a bog, drive slowly and gently and re-inflate as soon as you’re free.

Do you need a mud-terrain tyre for sand?
No — a good all-terrain at the right pressure usually floats better than an aggressive mud-terrain, whose chunky lugs can scoop sand and dig in. Pressure matters far more than tread pattern on sand.

What recovery gear should I carry for the beach?
At minimum: a tyre gauge, a 12V compressor, a long-handled shovel, traction boards and a rated recovery kit. In remote areas travel with a second vehicle.

Pressures and access rules vary by beach and vehicle. Confirm current advice with Parks Queensland’s driving-on-sand guide and this detailed beach tyre-pressure breakdown from 4WDing Australia.