The pre-trip tyre check that takes ten minutes and saves your holiday

Last school holidays we were loading the van in the driveway on Hastings Street — well, our version of it, a cul-de-sac in Ballina with a dog trying to get in the tow vehicle before the kids — and I noticed the passenger side van tyre sitting visibly lower than the other three. Nobody else looked twice. My eight-year-old asked if we could go, my six-year-old asked if the dog could sit on his lap, and I was the only one standing there thinking about a tyre that was probably down four or five PSI from a slow leak we hadn't caught yet. That's the check that actually matters on caravan day, and it's the one most families skip because everyone in the car is already asking "are we going yet."

I've done this trip up and down the coast enough times now — Melbourne to Cairns more than once, plus every possible detour off the Hume and Pacific in between — to know that tyre problems don't announce themselves neatly. They show up as a wobble at 90 km/h, a burning rubber smell at a servo, or a blowout on the Bruce Highway with two kids in the back seat asking why we've stopped. None of that is dramatic to write about. All of it is preventable in about ten minutes before you leave the driveway.

Why the ten-minute tyre check actually matters for families

Caravan tyres cop a different life to car tyres. They sit loaded near their rated capacity for hours at a time, they often sit unused for months between trips (which ages the rubber even if the tread looks fine), and on a family van they're carrying kids' bikes, the extra water tank, and whatever's crammed into the boot for a fortnight away. A tyre that's fine for a Saturday tip run is a different proposition towed 600 km with four people's worth of gear on board.

We've had one real tyre failure on the road, a sidewall blowout on the Pacific Highway near Grafton, and the thing that got us through it calmly wasn't luck — it was that we'd checked pressures that morning and knew the spare was good. The kids barely noticed. If I hadn't checked, I'd have been guessing whether the spare was actually roadworthy while trying to keep two kids off the highway shoulder.

Pressure: check it cold, and check the actual number

Cold pressure means before you've driven more than a kilometre or two — heat from driving inflates the reading and you'll under-read the real cold figure. I keep a decent digital gauge in the glovebox rather than trusting the little pump-station gauges, which in my experience are wildly inconsistent from one servo to the next.

Your van's tyre placard (usually on the drawbar or inside a cupboard door) gives the manufacturer's figure, and that's your starting point — not a guess, not "whatever it was last time." Loaded vans generally run higher pressures than the tyre's minimum, and if you're running at or near your van's GVM with four bikes and a full water tank, it's worth erring toward the higher end of the range the manufacturer specifies rather than the lower end. This connects directly to your loaded weight versus tare weight — a van running near its limit needs different pressures to one running half empty, and the placard figure assumes a load condition that mightn't be yours.

I check all four van tyres, both back tyres and the spare, every single time we leave. Every time. Not just the trips where something feels off.

Tread depth and the coin trick that actually works

The legal minimum tread depth in most states is 1.5 mm, but I wouldn't be towing a family van on anything close to that limit, particularly on a longer trip where you can't just pop into a tyre place around the corner. A twenty-cent coin works as a rough visual check — if the tread doesn't cover the platypus's back, you're getting close to the point where wet-weather grip and heat dissipation both suffer.

What I actually look for is uneven wear across the tyre face. Wear concentrated on one edge usually means an alignment or camber issue; wear in the centre only can mean over-inflation; wear on both edges with a healthy centre usually means under-inflation. None of these are things you fix on the side of the road, but catching them in the driveway means a trip to a tyre fitter before you go rather than a problem 400 km from the nearest one.

Tyre age: the check most caravan owners skip entirely

This is the one that genuinely surprises people. A tyre can look perfect — full tread, no visible cracking, plenty of rubber — and still be dangerous simply because of age. Rubber compounds degrade over time regardless of how many kilometres are on them, and a caravan that sits in the yard for eight months of the year between trips is exactly the scenario where this bites.

Every tyre has a DOT code moulded into the sidewall, a four-digit number where the last two digits are the year and the first two are the week of manufacture. A tyre stamped 2318 was made in the 23rd week of 2018. Most tyre manufacturers and industry bodies recommend replacing tyres around the 5 to 7 year mark from manufacture date regardless of tread remaining, and I'd lean toward the earlier end of that for a van that does outback corrugations rather than one that only sees bitumen. We covered exactly this in more depth in caravan tyre age and inspection, and it's worth the read because I genuinely didn't know to check this for our first two years of towing. I bought our van second-hand and the tyres looked new. They weren't.

My honestly slightly contrarian view here: I think caravan dealers should be legally required to disclose tyre manufacture dates at point of sale the same way odometers are disclosed on used cars. At the moment it's entirely on the buyer to crouch down and read a stamped code most people don't know exists, and that's a gap that catches out exactly the family buyers who are newest to towing and least likely to know to check.

The spare gets forgotten, every time

I'll be honest, I forgot to check our spare for the first year we owned the van. It lives underneath, it's awkward to get to, and it's easy to assume it's fine because you've never used it. Do the same pressure and age check on the spare as you do on the road tyres. A flat or ancient spare is worse than no spare at all, because it gives you false confidence right up until the moment you need it and discover it's useless.

Wheel nuts and the 50 km re-torque

This one isn't strictly a tyre check but it belongs in the same routine. Wheel nuts on a caravan can work loose in the first hours after any wheel has been off, whether that's a tyre rotation, a bearing service or a puncture repair. The standard advice, and it's on basically every workshop's paperwork, is to re-torque wheel nuts after the first 50 to 100 km of towing following any wheel removal. I keep a torque wrench in the van specifically for this because I've had a workshop under-torque a wheel once and I'd rather check myself than assume.

Building it into departure day without the meltdown

The trick with kids in the mix is doing this before you announce you're leaving, not after. I check tyres the night before or first thing while the kids are still eating breakfast, so it's done before anyone's asking "are we there yet" from the driveway. Ten minutes, a gauge, and a look at four sidewalls. It's genuinely less time than it takes to convince a six-year-old to put shoes on.

If you're heading somewhere remote where a tyre problem means real consequences rather than just an inconvenient wait — think the run out to Wilpena Pound or further out along routes like the Red Centre Way — this check matters more, not less. Servo air and tyre fitters thin out fast once you're past the last major town, and a slow leak that's manageable on the Hume becomes a genuine problem on gravel a few hundred kilometres from help.

We're not a family that does dramatic outback crossings with the kids in tow, but the same ten minutes applies whether you're headed to Kiama for the weekend or planning something longer. Tyres don't know the difference between a big trip and a small one. They just know whether they were checked.