How often should you check caravan tyre pressure?
The short answer for Australian caravan owners is monthly at home, weekly during touring, every morning on the road, and at every fuel stop on a long driving day. That's the baseline a manual gauge can deliver. A tyre pressure monitoring system shortens the gap to every five minutes, awake or asleep, because pressure can shift faster than the next fuel stop.
The longer answer matters because most caravan tyres spend most of their lives stationary. A van that's parked under a carport for six weeks between trips can lose two to three PSI on each wheel, develop early flat spots, and quietly age in the Australian sun, all without the owner ever noticing. By the time the van rolls onto the highway with a full water tank and a heavy ball weight, the tyres are doing more work at lower pressure than they were rated for, and the heat-and-flex cycle that causes most blowouts is already underway.
This guide sets out the schedule that catches problems before they become incidents, and explains how a TPMS automates the bits a manual check can't reach. For the broader picture on choosing a TPMS, sensor counts, and which kit suits which rig, pair this with our complete Australian TPMS buyer's guide.
The caravan tyre pressure check schedule
The schedule below is the working baseline for a typical Australian caravan owner who tours seasonally and keeps the rig at home between trips. Adjust upward in the heat of summer, after long highway runs, and after any storage of more than three weeks.
| When | What to check | Why it matters |
|---|---|---|
| Every month at home | All caravan tyres + spare, cold | Stored tyres lose 1–2 PSI per month from natural permeation |
| Before any trip | All wheels including the tow vehicle, cold | Catches the cumulative loss from storage |
| Each morning during a trip | Visual + cold pressure read | Overnight temperature drops can shift pressure 3–5 PSI |
| Every fuel stop on a driving day | Quick visual, hand on rim | Catches developing slow leaks and hot bearings |
| After 3+ weeks of storage | Full pressure + sidewall inspection | Flat spots and UV cracking develop after long stationary periods |
| Seasonally | Re-baseline cold pressure | 1 PSI shift per ~5°C of ambient temperature change |
Two caveats on the schedule. First, "cold" means the tyres haven't been driven on or sat in direct sun for at least two to three hours. A reading taken straight after a highway leg can be 6–8 PSI higher than the cold equivalent, and adjusting to that hot reading guarantees you'll be under-inflated tomorrow morning. Second, the spare counts. It's the wheel nobody checks until they need it, and a flat spare in the back of the van is no spare at all.
Why monthly is the floor, not the ceiling
Tyres lose pressure naturally. Air molecules permeate slowly through the rubber casing at a rate of roughly one to two PSI per month, even on a perfectly healthy tyre with no puncture and no valve leak. That figure doubles in hot weather and again on tyres mounted on alloy rims with mismatched valves. A van that gets a full pressure check in March and the next one in May has tyres running 2–4 PSI low at the start of any trip in between.
Three forces compound the natural loss. UV exposure hardens the rubber and accelerates micro-cracking on the sidewall, which becomes a slow leak path. Stationary loading creates flat spots that distort the bead seal and let air past the rim. And heat cycling — the daily expand-and-contract of any tyre sitting in the Australian sun — works the valve seal harder than the same valve on a daily-driven car.
Monthly checks catch all three before they compound. They don't catch a sudden pressure drop from a road hazard, a sharp gibber rock on a corrugated track, or a valve that fails between checks. Those failure modes are why the schedule includes daily checks on the road and live monitoring during the drive.
The seasonal pressure shift most owners miss
Tyre pressure changes with ambient temperature, and the rule of thumb is roughly 1 PSI per 5°C of change. A van set to placard at 30°C in February will read 4–5 PSI lower at 5°C on a winter morning in Bright. The tyre hasn't actually leaked; the air inside has just contracted. Re-check at the start of every season and after any long stretch of touring at altitude.
The same principle works in reverse. A tyre set to placard on a cold morning in the High Country will read 3–4 PSI higher by the afternoon at a 35°C servo on the Hume. Don't bleed pressure off a hot reading to bring it back to placard; you'll wake up under-inflated.
Why TPMS is the only honest answer to "how often"
The schedule above is what a disciplined owner can deliver with a digital gauge and a routine. The honest reality is that few owners actually hit it. Monthly checks at home slip when life gets busy. The pre-trip check happens on the morning of departure, when the tyres have already been moved out of the carport and aren't fully cold. The fuel-stop visual takes thirty seconds and only catches what's already visible.
A tyre pressure monitoring system replaces "how often should I check" with "I'm being told the moment anything changes." iCheckTPMS sensors transmit pressure and temperature data on every wheel to a solar-powered display in the cab every five minutes, awake or asleep, parked or moving. If a tyre starts dropping 4 PSI over fifteen minutes — the leading edge of a developing failure — the alarm fires before the failure does, usually with enough warning to ease off the throttle, signal, and pull over before the carcass lets go.
Two iCheckTPMS features make the system practical for caravan owners specifically. InstaData™ keeps reporting every five minutes even when the rig is stationary — most other sensors sleep below 25 km/h, so a slow leak that develops in the driveway only surfaces once you're already on the highway. IntelliData™ auto-calibrates the alarm thresholds at +25% and -15% of the cold benchmark when you screw the sensors on, so you don't have to manually configure 8–10 wheels at different pressures.
The right kit depends on the rig. The IC005 covers a 4WD only (four wheels plus a spare). The IC008 covers a 4WD plus a single-axle van (eight sensors including all spares). The IC010 covers a 4WD plus a dual-axle van (ten sensors). All three share the same display, the same sensor design, and the same 5-minute refresh rate. Pair any kit with the optional Wheel Bearing Sensor add-on for hub-temperature monitoring on the caravan axles — the only TPMS in the Australian market that integrates bearing temperature into the same display.
The stored caravan case (and why it deserves its own check)
Caravans that sit between trips need their own routine. The minimum for a van stored for more than three weeks:
- Park on a hard, level surface — never on grass or dirt that holds moisture against the rubber.
- Inflate slightly above placard (5 PSI over) before extended storage to offset natural permeation.
- Use UV-resistant tyre covers on any wheel exposed to direct sun.
- Move the van forward or backward by half a wheel rotation every four to six weeks to redistribute the load and prevent flat spots.
- Re-check pressure and inspect sidewalls before the next trip — never just before driving away.
A TPMS pays for itself on a stored van. Without it, the only way to know what storage has done to the tyres is to walk around the rig with a gauge before every check. With InstaData reporting every five minutes through the display in the tow vehicle, a slow leak that develops in week three of storage shows up the moment you turn the rig on, not after you've already pulled out of the driveway. For the longer view on TPMS feature differences across kits, the complete buyer's guide walks through which sensor count suits which setup.
Quick-Answer FAQ
How often should I check caravan tyre pressure?
Monthly at home as a minimum, before every trip, each morning while touring, and at every fuel stop on a driving day. Tyres lose 1–2 PSI per month naturally, so even a healthy stored van starts a trip slightly under-inflated if the last check was more than four weeks ago. A TPMS automates the schedule by reporting live data every five minutes.
Do I need to check tyre pressure on a stored caravan?
Yes, monthly at minimum. Stored caravans lose 1–2 PSI per month from natural air permeation, can develop flat spots after a few weeks of stationary loading, and accumulate UV damage on any sidewall exposed to direct sun. Re-check before every trip — never just before driving off — and inflate 5 PSI over placard before extended storage to offset the permeation loss.
How does temperature affect caravan tyre pressure?
Pressure shifts roughly 1 PSI for every 5°C change in ambient temperature. A van set to placard at 30°C will read 4–5 PSI lower at 5°C on a cold morning, and the same van will read 3–4 PSI higher by an afternoon at 35°C. Re-baseline cold pressure at the start of every season and after any long touring stretch at a different altitude or climate.
What does "cold" mean when checking tyre pressure?
"Cold" means the tyre hasn't been driven on or parked in direct sun for at least two to three hours. A reading taken straight after a highway run can be 6–8 PSI higher than the cold equivalent, and adjusting to that hot reading will leave you under-inflated the next morning. Always check first thing in the morning before the sun hits the rubber.
How often does a TPMS check tyre pressure?
iCheckTPMS sensors transmit pressure and temperature data every five minutes through the InstaData™ system, whether the rig is parked or moving. That's a 5-minute refresh on every wheel, around the clock, compared to a manual gauge which delivers data once a month at best. Most other TPMS sensors sleep below 25 km/h and only resume reporting once the vehicle is moving — InstaData keeps reporting in the driveway, at a free camp, and at the fuel stop.
Is a TPMS legally required on caravans in Australia?
No. TPMS is voluntary fitment in Australia, which is why caravans almost never come with factory-fitted systems. An aftermarket TPMS is the only practical way to get continuous pressure and temperature monitoring on a towed rig.
The Australian-engineered safeguard against missed checks
The schedule at the top of this article is what a disciplined owner can deliver. The schedule a TPMS delivers is every five minutes, every wheel, every day, with no input required after initial setup. iCheckTPMS designs and develops in Australia, for Australian conditions — long storage gaps in the heat, big seasonal swings, and the specific failure modes that hit caravan tyres harder than tow-vehicle tyres. The IC008 and IC010 cover most caravan setups, the optional Wheel Bearing Sensor closes the bearing-temperature gap, and the system reports live the moment any wheel deviates from the cold benchmark.
Browse the full iCheckTPMS range for the kit that suits your rig.
