Why Every Australian Tower Needs a TPMS in 2026
Picture this. You're three hours into a tow through Central Queensland, the Ranger humming along nicely, the dual-axle van tracking straight. Then your mate at the next fuel stop points at your rear caravan tyre. It's flat. Not completely gone, but well below safe pressure. You had no idea.
This happens more often than most people think. Around 75% of caravan tyre blowouts trace back to underinflation that went undetected until the tyre overheated and the rubber separated, according to RV Online Australia. And here's the thing about towing: your caravan tyres are behind you. Out of sight. You can't see them, you can't hear them, and by the time something feels wrong through the steering wheel, the damage is already done.
A TPMS (Tyre Pressure Monitoring System) fixes that blind spot. Sensors on each tyre wirelessly transmit pressure and temperature data to a display on your dashboard. If anything goes wrong, a slow leak, a rapid pressure drop, a tyre running hot, you get an alert before it becomes a blowout.
Australia now has over 901,000 registered caravans and campervans, the highest number on record. That figure comes from the Bureau of Infrastructure and Transport Research Economics (BITRE) and represents a 27% jump since 2019. More vans on the road means more tyres under load, more bearings working harder, and more people who've never had a blowout assuming it won't happen to them.
One thing worth knowing before we go further: TPMS is not mandatory in Australia. Not for cars, not for caravans, not for trucks. The US has required it on all new passenger vehicles since 2007, and the European Union extended its mandate to trailers in 2024 under UN ECE R141. Australia has no equivalent regulation on the books or planned.
That means it's on you. The good news is that aftermarket TPMS technology has gotten dramatically better in the past few years, and prices have come down to the point where a full 8-sensor system costs less than a single roadside tyre change.
Here's what makes it worth caring about. Tyre Power Australia notes that for every 5°C change in ambient temperature, tyre pressure shifts by roughly 2%. If you leave home in Brisbane at 22°C and drive into a 38°C afternoon west of Longreach, your tyre pressures have changed without you touching a thing. On top of that, tyres naturally lose 1-2 PSI per month just sitting still. A TPMS catches these invisible shifts before they become problems.
How a TPMS Actually Works (In Plain English)
If you've driven a car built after 2012 or so, you probably have a tyre pressure warning light on your dashboard already. That's an indirect TPMS. It uses your car's anti-lock braking system to detect when one wheel is spinning slightly faster than the others, which suggests lower pressure. It's imprecise, it can't tell you actual PSI numbers, and it only works while the car is moving.
Every aftermarket caravan TPMS on the Australian market uses a completely different approach: direct monitoring.
Direct vs Indirect TPMS: Why It Matters for Caravans
Direct TPMS uses a physical sensor on each tyre that measures the actual air pressure and temperature inside or at the valve. These sensors transmit their readings wirelessly to a receiver, typically a small display you mount on your dashboard.
Indirect systems have a flaw that rules them out for towing: if all four tyres lose pressure equally (say, because temperature dropped overnight), the system sees no difference between wheels and triggers no alarm. A 2012 NHTSA study (DOT HS 811 681) found that TPMS systems displaying actual PSI readings are 40% more effective at preventing severe underinflation than those using warning lights alone. That study also found TPMS is 56% effective overall at preventing tyres from running 25% or more below recommended pressure.
For caravans specifically, indirect isn't even an option. Your car's ABS has no connection to the caravan's wheels. You need dedicated sensors on the caravan tyres, transmitting to their own display. That's where aftermarket direct TPMS comes in.
How External Sensors Transmit Data
The most common setup for caravans uses external sensors. These are small units (typically under 10 grams each) that screw directly onto the valve stem on each tyre, replacing the standard dust cap.
Each sensor contains a pressure transducer, a temperature sensor, a tiny battery (usually CR1632 or similar), and a radio transmitter. The sensor monitors pressure and temperature continuously and broadcasts readings at regular intervals to the dashboard display.
When a sensor detects something outside normal range, a sudden pressure drop, a gradual leak, or a temperature spike, it sends an immediate alert to the display, usually with an audible alarm.
The display unit sits on your dashboard, plugged into a USB port or running on solar power with a battery backup. It shows real-time data for every monitored tyre. Most systems support 4 to 10 sensors, covering your tow vehicle and caravan on a single screen.
The 433 MHz Question: Why You Can't Import a US System
Here's something that catches people out. TPMS sensors communicate on radio frequencies, and different countries use different bands. Australia uses 433.92 MHz, aligning with the European standard. North America uses 315 MHz. These frequencies are not interchangeable.
If you buy a TPMS system from an American seller on Amazon, there's a decent chance it operates on 315 MHz and won't work properly in Australia. It may turn on and appear functional, but the signal characteristics and regulatory compliance differ. Always verify that any system you're considering is designed for 433 MHz operation. Every Australian-market TPMS brand, including iCheckTPMS, uses the correct frequency.
What to Look for in a Caravan TPMS: The Features That Actually Matter
Walk into a 4WD accessory shop or start browsing online, and you'll find dozens of TPMS options ranging from $50 to $800. The spec sheets blur together quickly. Here's what actually matters and what's marketing noise.
Sensor Count: Matching Your Setup
Start with how many tyres you need to monitor.
A 4WD-only setup (no caravan or trailer) needs 4-5 sensors: one per wheel, plus ideally your spare. A 4WD towing a single-axle caravan needs 8 sensors. A 4WD with a dual-axle caravan needs 10. Some horse floats and boat trailers run single-axle with 2 or 4 tyres, so plan accordingly.
The mistake people make is buying a 4-sensor kit for their car and then realising they can't add caravan sensors later because the system maxes out. Check the maximum sensor capacity before you buy.
Display Technology: Solar LCD vs Smartphone App
You have two main display options. A dedicated solar-powered LCD unit that sits on your dashboard, or a system that connects to your phone via Bluetooth.
Solar LCD displays are self-contained. They're always on, always visible, and they don't depend on your phone being charged, connected, or running a specific app. In remote areas where you might be driving 10 hours straight, having a dedicated display that never needs charging (the solar panel and backup battery handle that) is reassuring.
Some app-based systems connect to your smartphone via Bluetooth. They often offer more detailed data, logging, and graphs. The trade-off: if your phone dies, crashes, or you forget to open the app, you lose your monitoring. Some people prefer the clean look of using their phone; others want the peace of mind of a dedicated screen that's always showing tyre status.
Auto-Calibrating Alerts vs Manual Programming
This is where systems start to differentiate themselves in ways that matter day-to-day.
Many TPMS systems require you to manually program high and low pressure thresholds for each tyre. You need to decide: at what PSI should the alarm trigger? If you get it wrong, you either get false alarms constantly or the system doesn't alert you soon enough.
Some systems handle this automatically. iCheckTPMS uses a feature called IntelliData™ that auto-calibrates: screw the sensors onto cold tyres, and the system reads the current pressure as the benchmark. It then sets a high alarm at +25% above that benchmark and a low alarm at -15% below. No manual programming. This also means that when you air down for off-road (more on that later), you can simply reinstall the sensors at the new pressure and the system automatically recalibrates. They call this On/Off Road Mode.
Stationary Monitoring: Does Your System Work When Parked?
Some TPMS sensors only activate when the wheel is spinning, typically requiring speeds of 25 km/h or more. If your caravan is parked at a campsite for three days, those sensors are asleep. A slow leak overnight goes undetected.
Other systems, like iCheckTPMS with InstaData™, transmit pressure and temperature readings every five minutes regardless of whether the vehicle is moving. You wake up, glance at the display, and know exactly what your pressures are before you hit the road. This is particularly useful for people doing extended touring, where the van might sit for days between drives.
Wheel Bearing Temperature: The Feature Most Buyers Don't Know About
This one's different from everything else on this list. Most TPMS systems monitor tyre pressure and tyre temperature through the valve-stem sensor. That tells you about the air inside the tyre. It tells you nothing about the wheel bearings.
Caravan wheel bearing failure is one of those problems that doesn't announce itself until it's too late. Bearings overheat, grease breaks down, metal grinds on metal, and in the worst cases, the wheel locks or the hub catches fire. This happens on Australian highways more often than the stats capture (there are no published Australian figures on caravan bearing failure frequency, which is part of the problem).
Hub-mounted wheel bearing temperature sensors sit on the hub assembly and monitor bearing temperature independently. If bearing temperature climbs past a safe threshold (typically 100°C), you get an alert on the same display as your tyre data. This is physically different from the tyre sensors on your valve stems. We'll dig into this in detail in a dedicated section below.
What iCheckTPMS Offers: The Full Product Range (2026)
There are several TPMS brands on the Australian market. Some focus on retail distribution, others on smartphone connectivity, and a few on high-capacity fleet setups. After looking at what's available, here's why iCheckTPMS stands apart as a purpose-built specialist for 4WD and caravan owners.
iCheckTPMS: Built for Australian Touring
iCheckTPMS is a Queensland-based TPMS specialist. Not a generalist electronics brand. Not a side product in a bigger catalog. They design and sell TPMS, deflators, and related accessories for the 4WD and caravan market.
Product range:
- IC005 (5 sensors, car/4WD): $299 AUD
- IC008 (8 sensors, 4WD + single-axle van): $395 AUD
- IC010 (10 sensors, 4WD + dual-axle van): $489 AUD
What stands out: IntelliData™ auto-calibrating alerts (no manual programming), InstaData™ stationary monitoring every 5 minutes, On/Off Road Mode for airing down, optional hub-mounted wheel bearing temperature sensors (from $178 AUD), solar-powered colour LCD display with 30+ day battery backup, and CR1632 user-replaceable sensor batteries.
Honest trade-off: No smartphone app. If you want Bluetooth connectivity or data logging on your phone, iCheckTPMS doesn't offer that. The display is the monitoring interface. For some buyers that's a dealbreaker; for others, it's actually a selling point (no phone dependency).
Warranty: 24 months. Australian-based support (Queensland).
How iCheckTPMS Compares to Other Players in the Market
When you compare iCheckTPMS against other brands available in Australia, a few differences stand out. Most competing systems require you to manually program pressure thresholds for each tyre. Most don't offer stationary monitoring, meaning their sensors only activate once you're driving above 25 km/h. And none of them offer integrated hub-mounted wheel bearing temperature monitoring on the same display as your tyre data.
Some competitors focus on smartphone app connectivity. Others offer high sensor counts for fleet and road-train setups (up to 22 tyres). A few have strong retail availability through chains like JB Hi-Fi and Supercheap Auto. These are valid strengths depending on what you prioritise.
Where iCheckTPMS pulls ahead is the combination of auto-calibrating alerts, stationary monitoring, On/Off Road Mode, and bearing temperature sensors in one ecosystem. No other brand on the Australian market offers all four. Pricing is competitive too — an 8-sensor kit at $395 AUD sits below or at parity with most alternatives once you factor in the cost of add-on sensors and signal boosters from other brands.
iCheckTPMS vs the Market: Feature Comparison
| Feature | iCheckTPMS | Most Other Brands |
|---|---|---|
| Max sensors | 10 | Varies (2-22 depending on brand) |
| Display type | Solar LCD | LCD, app-only, or LCD + app |
| Solar-powered display | Yes | Some models |
| Auto-calibrating alerts | Yes (IntelliData™) | No (manual programming required) |
| Stationary monitoring | Yes (every 5 min via InstaData™) | Usually no (most need 25 km/h+) |
| Wheel bearing temp sensors | Yes (optional add-on) | Not available |
| Smartphone app | No | Some brands offer app connectivity |
| User-replaceable batteries | Yes (CR1632) | Varies (some sealed, some replaceable) |
| 8-sensor kit price (AUD) | $395 | $300-$800 depending on brand |
| Warranty | 24 months | 12-24 months |
| Australian support | Yes (Queensland-based) | Yes (most brands) |
Prices reflect March 2026 retail figures. Check each manufacturer's website for current pricing.
Wheel Bearing Temperature Monitoring: Why It Matters More Than You Think
Tyre pressure gets all the attention. Makes sense. Blowouts are dramatic. A flat tyre is obvious. But the failure mode that experienced tourers fear more is quieter and potentially more dangerous: wheel bearing failure.
What Happens When Bearings Overheat
A caravan wheel bearing sits inside the hub, packed in grease, and spins thousands of times per kilometre. Under normal conditions, it runs cool and quiet. Under excessive load, misalignment, age-related wear, or insufficient grease, friction builds. Temperature rises. Grease thins and breaks down. Metal contacts metal. The bearing starts to seize.
At that point, the hub temperature can climb past 150°C and beyond. In the worst cases, grease ignites. The hub catches fire. The wheel can lock or separate from the axle entirely. This has caused caravan fires on Australian highways. There are no widely published Australian statistics on how often this happens (a data gap the industry hasn't addressed), but any caravan mechanic will tell you they see damaged bearings regularly.
The problem is that bearing failure gives very little external warning until it's advanced. By the time you smell something burning or see smoke, you're well past the point of a simple repair.
How Hub-Mounted Temperature Sensors Work
A tyre valve-stem sensor measures air temperature inside the tyre. It cannot detect bearing heat. The bearing is inside the hub, separated from the tyre air by the rim, and the two temperatures are independent of each other.
Hub-mounted bearing temperature sensors are physically different devices. They attach to the hub assembly (not the valve stem) and measure the temperature of the hub surface directly. This gives you a reading of bearing operating temperature in real time.
iCheckTPMS offers these as an optional add-on to any of their TPMS kits. The wheel bearing temperature sensors come in 2-sensor packs (single axle) or 4-sensor packs (dual axle) starting at $178 AUD. They display bearing temperature on the same monitor as your tyre pressure data. An alert triggers if bearing temperature exceeds 100°C.
Why No Other TPMS Brand Offers This
When we researched this article, we checked every major TPMS brand selling in Australia. None of the other players offer integrated hub-mounted wheel bearing temperature monitoring. One newer standalone product (Wheel Sensei from Smarter Towing) offers app-based bearing temperature monitoring, but it's a separate system, not integrated with TPMS.
This makes iCheckTPMS's bearing sensor the only option that shows tyre pressure, tyre temperature, and bearing temperature on a single screen. Whether that's important to you depends on your setup and how far you travel. For someone doing a week-long trip along the coast, it might be overkill. For someone towing a loaded dual-axle van across the Nullarbor or up the Savannah Way, it's genuine peace of mind.
How to Choose the Right TPMS for Your Setup
Forget the features list for a moment. What's your actual vehicle and caravan setup? That determines 80% of the buying decision.
Matching Sensors to Your Vehicle Setup
4WD only (no caravan or trailer): You need 4-5 sensors. The iCheckTPMS IC005 covers this perfectly. Any entry-level direct TPMS with at least 4 sensors will do the job here.
4WD + single-axle caravan: 8 sensors. Four on the 4WD (including spare if the system supports it), four on the caravan. The IC008 is built for this exact setup. Other brands offer 8-sensor configurations too, though some require buying add-on sensor pairs separately.
4WD + dual-axle caravan: 10 sensors. This is where the IC010 comes in. You're monitoring four tyres on the 4WD, four on the caravan axles, and ideally a spare on each vehicle. At this size, the system's maximum sensor capacity matters.
Horse float or boat trailer: Typically single-axle with 2 tyres. An 8-sensor system (4WD + trailer) works well. Some people don't bother monitoring the tow vehicle and just use 2-4 sensors on the trailer.
When You Need a Signal Booster
TPMS sensors transmit over radio, and the signal has to travel from the rear of your caravan to the display on your tow vehicle's dashboard. For a short-wheelbase 4WD towing a compact pop-top, that's maybe 6-7 metres. Fine.
For a dual-cab Ranger towing a 22-foot dual-axle van, you're looking at 10-12 metres. The standard transmission range on most TPMS sensors is 7-8 metres. A signal booster ($89 AUD from iCheckTPMS) sits between the vehicles and relays the signal.
If your combined rig length exceeds about 8 metres, budget for a signal booster. It's better to have one and not need it than to get intermittent sensor dropouts at highway speed.
Adding Wheel Bearing Sensors
If you're towing a loaded caravan on long trips, especially on corrugated or remote roads where breakdowns mean real trouble, wheel bearing sensors make sense. They're particularly worth considering if your caravan is more than a few years old, if you've replaced bearings before, or if you tour through outback Australia regularly.
They add $178 AUD for a single-axle 2-sensor pack or more for dual-axle. Given that a wheel bearing failure on the road can cost $500-$2,000 in repairs, towing, and accommodation (not counting the safety risk), the prevention cost is modest.
Installation, Setup, and Getting the Most From Your TPMS
One of the things that puts people off aftermarket TPMS is an assumption that it's complicated. It isn't. You can install a full 10-sensor system on your 4WD and caravan in 15-30 minutes with no tools.
Five-Minute Installation
External sensors screw onto your tyre valve stems, replacing the standard dust caps. That's it. Unscrew the dust cap, screw on the sensor, hand-tight. Each sensor weighs under 9 grams, so it's not adding meaningful weight to the valve.
Mount the display on your dashboard using the included adhesive mount or suction cup. Plug it into a USB port for initial charge (solar takes over from there for solar-powered units). Turn it on. The display automatically detects each sensor and begins showing data.
One thing to be aware of: install sensors on cold tyres. Not after driving for an hour. Cold tyres give you accurate baseline pressures. First thing in the morning is ideal.
Auto-Calibration: Set and Forget
With a system like iCheckTPMS, the IntelliData™ feature reads the cold pressure from each sensor and sets that as the benchmark. High alarm: +25% above. Low alarm: -15% below. You don't need to calculate thresholds or navigate menu settings.
With manually programmed systems (which is what most other brands use), you'll need to set your high and low PSI thresholds for each tyre position. Consult your tyre placard or owner's manual for the recommended pressures and set your thresholds accordingly. This takes a few extra minutes but you generally only do it once.
Using On/Off Road Mode for Terrain Changes
If you're heading off bitumen, you'll likely air down your tyres for better traction and comfort. Going from 40 PSI to 25 PSI on a corrugated track, for example, or dropping to 18 PSI for beach driving.
With a manually programmed TPMS, you need to reprogram your alarm thresholds every time you change pressure, otherwise the low-pressure alarm will sound constantly at your new lower pressure.
With iCheckTPMS's On/Off Road Mode, you unscrew the sensors, deflate to your target pressure, reinstall the sensors, and the system automatically reads the new pressure as the new benchmark. Same automatic calibration, zero reprogramming. When you reinflate for highway driving, reinstall the sensors and it recalibrates again. For people who air down frequently (and in Australia, that's most people who leave the bitumen), this saves genuine frustration.
Tyre Pressure by Terrain: An Australian Reference Guide
Knowing what pressure to run is half the equation. Monitoring that you're still at that pressure is the other half. Here's a practical reference for caravan tyre pressures across Australian conditions.
Recommended Caravan Tyre Pressures by Terrain
| Terrain | Suggested Pressure Range | Max Speed | Notes |
|---|---|---|---|
| Bitumen highway | 40-50 PSI (check tyre placard) | Speed limit | Start with manufacturer's recommended cold pressure |
| Formed unsealed road | 30-35 PSI | 65-70 km/h | Reduces vibration and tyre stress on corrugations |
| Loose gravel/dirt | 25-30 PSI | 40-60 km/h | Wider footprint, better grip |
| Sand (beach/desert) | 15-20 PSI | 30-40 km/h | Maximum footprint, minimum digging |
| Mud | 20-25 PSI | 20-30 km/h | Lower for flotation, but not so low you risk bead roll |
| Rocky tracks | 28-32 PSI | 20-40 km/h | Needs some sidewall protection against punctures |
These are general guidelines based on Windsor RVs' tyre pressure maintenance guide and standard 4WD practice. Always check your specific tyre manufacturer's recommendations. Loaded weight affects optimal pressure significantly.
How Temperature Affects Your Readings
A tyre reading taken at 6 AM in winter will be measurably different from one taken at 2 PM in summer. Tyre Power Australia notes that hot tyres typically read about 4 PSI higher than cold. This is normal expansion, not a problem. But it means you should always set your baseline pressures cold, ideally before driving in the morning.
This is another area where continuous TPMS monitoring earns its keep. You don't need to remember to check before every drive. The system's already watching. If you aired down correctly and something changes unexpectedly, a slow leak from a picked-up nail, a valve stem loosening on rough roads, you'll know.
The Safety Case: Why TPMS Pays for Itself
If you've read this far and you're still wondering whether a TPMS is worth the investment, here are the numbers.
The Numbers on Safety
The NHTSA's evaluation of TPMS effectiveness found that TPMS is 56% effective at preventing severe underinflation, defined as running 25% or more below recommended pressure. That's from a controlled study of over 6,100 vehicles. Systems that show actual PSI numbers (like every aftermarket caravan TPMS) performed 40% better than simple warning-light systems.
In the United States, where decades of crash data is available, NHTSA records approximately 11,000 tyre-related crashes per year. Roughly 563 fatalities were attributed to tyre failures in 2022 alone. No equivalent Australian data has been published (an uncomfortable gap in our road safety reporting), but the physics are the same. Underinflated tyres generate excessive heat, and heat causes rubber to separate from the carcass.
Fuel Savings That Add Up
NHTSA research cited by Tyre Power Australia shows that every 1% decrease in tyre pressure corresponds to a 0.3% increase in fuel consumption. Run your tyres at 20% below recommended pressure and you're burning 4% more fuel. On a 4WD towing a caravan at 15-20 litres per 100 km, that's an extra 0.6-0.8 litres per hundred kilometres.
Over a 5,000 km trip, that could mean an extra 30-40 litres of diesel. At $2 per litre, you're looking at $60-80 in wasted fuel from something a TPMS would have caught on day one. Over a year of regular touring, a $395 system can genuinely pay for itself in fuel savings alone, before you factor in the value of not having a blowout.
Where the World Is Heading on TPMS Regulation
The global direction is clear. The US has mandated TPMS since 2007. The EU expanded its mandate to include trailers over 3.5 tonnes in 2024 under UN ECE R141. China mandated TPMS on all new passenger vehicles from 2020. Japan, South Korea, and Russia have their own requirements.
Australia remains an outlier. There's no current ADR (Australian Design Rule) mandating TPMS, and no public indication that one is being developed. Given how long regulatory processes take in this country, aftermarket solutions are likely to remain the only option for caravan and 4WD owners for the foreseeable future.
Some insurance providers in the RV space offer premium discounts for vehicles equipped with TPMS, though Australian-specific data on this is limited. It's worth asking your insurer.
Common Mistakes to Avoid When Buying and Using a TPMS
After speaking with caravan owners, reading through years of forum posts on Exploroz and the Grey Nomads forums, and looking at the most common complaints across every brand, a few patterns emerge. These are the mistakes that trip people up.
Buying a system with too few sensors. The most common regret. Someone buys a 4-sensor kit for their 4WD, then adds a caravan six months later and discovers the system can't expand to 8 or 10 sensors. Start with the sensor count you'll eventually need, or at minimum, buy a system that supports expansion to 10.
Forgetting about the signal booster. If your rig is longer than about 8 metres nose to tail, and nearly every 4WD-plus-caravan combination is, the sensors on your rear caravan axle are likely too far from the dashboard display. A $89-$99 signal booster solves this. Budget for it from day one.
Installing sensors on hot tyres. The system calibrates its pressure benchmarks from the initial reading. If you install sensors after an hour of highway driving, your baseline is artificially high. When the tyres cool overnight, the system thinks you've lost pressure and sets off the alarm at 3 AM. Install on cold tyres. First thing in the morning, before you drive.
Not replacing rubber valve stems with metal ones. External TPMS sensors add weight to the valve stem. On bitumen, this is fine. On corrugated outback roads, the sensor bounces and vibrates. Over time (months to years), this can crack rubber valve stems. Forum users have reported this with various brands. The fix is simple: ask your tyre fitter to install metal valve stems. They cost a few dollars each and eliminate the problem.
Ignoring the sensor battery. TPMS sensor batteries last 12-18 months typically. When they die, the sensor stops transmitting and your display shows a dropout or error. Some people assume the system is broken when it's just a flat battery. Check your sensor battery type before buying. User-replaceable CR1632 batteries (like iCheckTPMS uses) cost about $6 and take two minutes to swap. Sealed batteries mean replacing the entire sensor at $50-$100 each.
Running the same alarm thresholds on-road and off-road. If your TPMS alarms are set for 40 PSI highway pressure and you air down to 22 PSI for sand, the system will alarm constantly unless you reprogram it. With manually programmed systems, this means going into the menu every time you change terrain. With auto-calibrating systems, reinstalling sensors at the new pressure handles it automatically.
Wrapping Up: Making the Decision
Australia has over 900,000 caravans on the road and counting. Tourism Research Australia recorded 15.2 million caravan and camping trips in the year ending December 2024, with $14 billion in spending. The caravan industry is not slowing down.
What is changing is the technology available to make those trips safer. Five years ago, a quality TPMS for a 4WD and caravan would have cost well over $600, offered basic features, and required constant manual attention. Today, for $395-$489, you can get a fully auto-calibrating system with solar display, stationary monitoring, and the option to add wheel bearing temperature sensors that no other brand in Australia offers.
The question isn't really whether you need a TPMS. If you tow a caravan, you do. The question is which system matches your setup, your budget, and how far you plan to travel. Use the comparison table above, match the sensor count to your rig, and consider whether bearing temperature monitoring (an add-on unique to iCheckTPMS) is worth the extra peace of mind for your style of touring.
For more information on iCheckTPMS products, visit the TPMS collection page or the frequently asked questions page. You can also read our complete guide to TPMS for a broader overview of the technology.
Frequently Asked Questions
What is the best TPMS for a caravan in Australia?
It depends on your setup. For a 4WD towing a dual-axle caravan, a 10-sensor system like the iCheckTPMS IC010 ($489 AUD) covers both vehicles on one display. For a single-axle van, an 8-sensor kit like the iCheckTPMS IC008 ($395 AUD) is the standard configuration. The features that matter most are auto-calibrating alerts, stationary monitoring, and 433 MHz frequency compatibility. Some other brands offer smartphone app connectivity if that's a priority for you.
Do I need a TPMS for towing a caravan in Australia?
Not legally. TPMS is not required by any Australian regulation. But 75% of caravan tyre blowouts are caused by underinflation that a TPMS would detect before failure. Your caravan tyres are behind you and out of sight while driving. Most experienced tourers and motoring organisations consider aftermarket TPMS to be essential safety equipment, even though it's not mandated.
How does a TPMS work on a caravan?
External sensors screw onto each tyre's valve stem. Each sensor wirelessly transmits real-time pressure and temperature data to a display mounted on your dashboard. If any tyre's pressure drops below or rises above safe thresholds, or if a rapid leak is detected, the system triggers visual and audible alarms. You see all your tyres (tow vehicle and caravan) on a single screen.
What is the difference between internal and external TPMS sensors?
External sensors screw onto the outside of the valve stem and you can install them yourself in minutes. Internal sensors sit inside the tyre, mounted on the rim, and require professional fitting (the tyre has to come off). For caravans and 4WDs, external sensors are the standard and practical choice. They're easier to install, easier to move between vehicles, easier to replace batteries on, and don't require a tyre shop visit for maintenance. For more detail, see our guide to internal vs external TPMS sensors.
Can a TPMS monitor wheel bearing temperature?
Most TPMS systems only monitor tyre pressure and tyre temperature through valve-stem sensors. iCheckTPMS offers optional hub-mounted wheel bearing temperature sensors that monitor bearing heat independently and display it on the same screen as your tyre data. An alert triggers if bearing temperature exceeds 100°C. This is currently unique to iCheckTPMS in the Australian aftermarket TPMS market.
How much does a caravan TPMS cost in Australia?
Aftermarket TPMS systems for caravans range from around $299 to $799 AUD depending on sensor count and features. An 8-sensor system suitable for a 4WD and single-axle caravan typically costs $395-$500 AUD. Signal boosters add $89-$99. Wheel bearing temperature sensors start at $178 AUD. Budget options exist below $200, but quality and longevity vary significantly. For a system you'll rely on for safety on remote roads, the $300-$500 range offers the best balance of reliability and value.
How long do TPMS sensor batteries last?
Most external TPMS sensor batteries last 12-18 months with regular use. iCheckTPMS sensors use CR1632 batteries that you can replace yourself in minutes using the included opening tool. Replacement batteries cost about $6 for a pack. Some competitor systems use sealed batteries that can't be replaced; when the battery dies, you replace the entire sensor ($50-$100 each). Check whether sensor batteries are user-replaceable before buying. It affects your long-term running costs.
Do I need a signal booster for my TPMS?
If your combined vehicle and caravan length exceeds roughly 8 metres (and most 4WD-plus-caravan setups do), a signal booster is recommended. It relays the wireless signal from your rear caravan sensors to the display on the dashboard. A signal booster from iCheckTPMS costs $89 AUD. Without one, you may get intermittent readings or dropouts from the rear sensors, especially on a dual-axle van.
Is TPMS mandatory in Australia?
No. TPMS is not mandatory in Australia for any vehicle category, including caravans and trailers. This is different from the United States (mandatory for passenger vehicles since 2007 under the TREAD Act) and the European Union (expanded to trailers over 3.5 tonnes in 2024 under UN ECE R141). Australia has no published plans to introduce a TPMS mandate. Aftermarket TPMS is a voluntary safety upgrade.
Can I use the same TPMS on my 4WD and caravan?
Yes. That's exactly how most caravan TPMS kits are designed. An 8 or 10-sensor kit monitors both your tow vehicle and caravan tyres simultaneously on a single display. The sensors stay on each vehicle's valve stems. When you unhitch, the caravan sensors simply go out of range (or, with stationary monitoring systems, continue reporting while parked). When you reconnect and drive, the display picks up all sensors again automatically.
