If you’ve ever knelt in hot bulldust on the side of a corrugated road, manually deflating four tyres one at a time with a valve tool, then spent 20 minutes with a portable compressor airing them all back up again, you’ve probably thought: there must be a better way.
There is. Actually, there are several, and they range from a $100 gadget that does multiple tyres at once to a permanently installed system that lets you adjust tyre pressures from the driver’s seat without stopping. The question is whether you need one, and if so, which level makes sense for the way you travel.
The Three Levels Of Tyre Pressure Management
Before diving into products, it helps to understand that there are three fundamentally different approaches to managing tyre pressures off-road, and each one suits a different style of travel.
Level 1: Individual deflators + portable compressor. The setup most Big Lappers carry. A set of Staun auto-deflators (or a digital gauge/deflator) and a portable 12V compressor. You stop, deflate each tyre individually (or four at once with auto-deflators), drive the off-road section, stop again, and inflate each tyre one at a time with the compressor. It works, it’s proven, and it’s the cheapest option. The downside is time: deflating is fast with auto-deflators, but inflating four tyres one at a time with a compressor takes 15-25 minutes depending on the unit.
Level 2: Multi-tyre systems. Devices that connect to multiple tyres simultaneously via manifolds and hose systems. You still stop and connect hoses, but you deflate and inflate two or four tyres at once. This ranges from simple manual manifolds to digital systems that automatically inflate or deflate to your target pressure. Roughly halves the time compared to Level 1.
Level 3: True CTIS. A permanently installed system with air lines running from an onboard compressor to each wheel via rotary couplings at the hubs. You adjust tyre pressures from the driver’s seat, on the move, without stopping. Press a button, set your target pressure, keep driving. This is what military vehicles, mining trucks, and serious expedition rigs use.
Level 1: Individual Deflators & Compressor
This is what 95% of Big Lappers use, and for most, it’s all you need. A set of Staun automatic deflators (~$80-120 for a set of four) handles deflation quickly: set your target PSI, screw them on all four valves, walk away. A quality portable 12V compressor like the Mean Mother Adventurer 4 (~$250) or the ARB Twin (~$500) handles inflation one tyre at a time.
The total time to air down four tyres and air them back up again is roughly 25-35 minutes (5 minutes to deflate with Stauns, 20-30 minutes to inflate one at a time). If you’re doing this once or twice a week for a beach run or a campsite access road, it’s perfectly manageable.
Where it gets tedious is when you’re airing down and up multiple times a day, or when you’re towing and have six tyres to manage instead of four.
Level 2: Multi-Tyre Systems
Multi-tyre systems sit between basic individual deflators and a full CTIS. They connect to two or four tyres at once, letting you deflate, inflate, and equalise pressures simultaneously. The time saving is real, and the equalisation function (automatically balancing pressure across all connected tyres) is genuinely useful.
There are three sub-types: permanently mounted manifold systems, portable manual manifolds, and digital automatic systems.
Mounted Systems
These use a pressure vessel or manifold that’s permanently mounted to the vehicle (under the chassis, in the engine bay, or in the canopy), with hoses running to each wheel. You still stop and connect the hose ends to the tyre valves, but the manifold and most of the hose length is already in place. Faster setup than portable systems.
The Clearview Tyre Spider (~$390) is the standout in this category. It uses a pressure vessel with four individual valve outlets that mounts permanently to the vehicle, with each outlet controllable independently. The kit includes two 5-metre hoses and two 8-metre hoses, so it reaches long-wheelbase utes and can extend to the caravan. A digital pressure gauge monitors everything. The clever feature is “borrow air”: if one tyre is flat and you don’t have a compressor handy, you can inflate it by borrowing air from the other three tyres through the manifold. Originally invented for managing 18 wheels on Kenworth road trains at Innaminka.
Portable Manual Systems
These are carry-in, carry-out manifold systems. You pull them out of your storage, connect the hoses to your tyres and your compressor, do the job, and pack them away. No permanent mounting required.
The Tuff Terrain Multi Tyre Deflator Kit (4 Valve) connects to all four tyres at once for simultaneous deflation and inflation. A manual manifold with clip-on chucks and a central valve body. Straightforward, no electronics, just physics. Check price at Outback Equipment →
The Maxitrac Digital Tyre Inflator/Deflator (2 Tyre) connects to two tyres at once with a digital pressure display. Good for doing front and rear pairs separately, which suits Big Lappers who run different pressures front and rear. Check price at Repco →
Portable Digital/Automatic Systems
The next step up from manual manifolds. These systems let you set a target pressure digitally and the system automatically inflates or deflates to that target, then stops. No guesswork, no watching gauges.
The Tuff Terrain Pressure Pilot Automatic (2 Tyre) is a digital automatic deflator/inflator that handles two tyres simultaneously. Set your target pressure, connect, and the system does the rest. Do your fronts, then your rears. Check price at Outback Equipment →
If you run different pressures front and rear (which most tow vehicles do, since the rear carries more weight), a 2-tyre system can actually be more practical than a 4-tyre system. Connect both fronts, set your front pressure, disconnect. Connect both rears, set your rear pressure, done. A 4-tyre system equalises all four to the same pressure, which isn’t always what you want.
Level 3: True CTIS (Central Tyre Inflation System)
A true CTIS is the endgame. Permanently installed air lines run from an onboard compressor to each wheel via rotary couplings (rotators) that maintain an air seal between the stationary air line and the rotating wheel. A controller in the cab lets you set target pressures for each axle. The system inflates or deflates automatically. You don’t stop. You don’t get out. You don’t touch a single valve.
This is the technology used on military vehicles (think army trucks adjusting pressures on the move across desert terrain), mining haul trucks, and agricultural equipment. In the last few years, aftermarket CTIS systems have become available for consumer 4WD vehicles.
What’s Available In Australia
AIR CTI is the most established aftermarket CTIS manufacturer in Australia, based in Morwell, Victoria, and operating since 1998. They design, build, and test everything in-house. Their system uses hard pipe (rigid external tubing visible on the outside of the wheel) connected to rotators at each hub. The rotator design life is rated at 1,000,000 kilometres. They make systems for 4WD vehicles, utes, trucks, and even standard 2WD cars. The hard pipe is extremely tough: after testing on overgrown 4WD tracks, owners report zero scratches despite heavy vegetation contact. Installation is professional and typically takes a day. Pricing is custom-quoted based on your vehicle. Visit AIR CTI →
Rapid Inflation Systems is an Australian company that has developed what they describe as the world’s first viable retrofittable CTIS for 4WD vehicles with no vulnerable external hoses. Their system inflates and deflates from the driver’s seat. Visit Rapid Inflation Systems →
CTIS Australia is a newer entrant, currently testing prototypes with patents pending. They expect to begin rolling out orders by mid-2026. Worth watching if the other options don’t suit your vehicle. Visit CTIS Australia →
What It Costs
A true CTIS installation is a significant investment. Expect to pay $3,000-$8,000+ depending on the vehicle, the system, and the complexity of the install. This puts it firmly in the “serious off-road touring” category rather than “every Big Lapper needs this.” But for those who do need it, the convenience and capability are transformative. Owners consistently say they wouldn’t travel without one once they’ve experienced it.
A true CTIS requires removing all Schrader valve cores from your tyres. The system manages air pressure directly through the rotators. This means if the CTIS fails, you can’t use a standard compressor on the valve in the normal way without refitting valve cores. AIR CTI provides a manual override connection for this scenario.
Which Level Do You Need?
Be honest about how you travel. Most Big Lappers overestimate how often they’ll air down, and buying a $5,000 CTIS system for a trip that involves airing down twice is an expensive way to save 30 minutes.
Level 1 is right for you if:
You air down occasionally for beach runs, campsite access roads, or the odd corrugated stretch. You don’t mind spending 20-30 minutes with the compressor a few times a month. This covers 90% of Big Lappers. Cost: $150-600 (deflators + compressor).
Level 2 is right for you if:
You air down weekly or more often. You’re doing extended stints on corrugated roads (the Gibb River Road, Savannah Way, outback Queensland) where you’re airing down and up every day or two. The time saving of doing multiple tyres at once adds up significantly over weeks of travel. You want the equalisation function for peace of mind. Cost: $100-400 (multi-tyre system) plus your existing compressor.
Level 3 is right for you if:
You air down multiple times per day. You’re tackling serious off-road terrain (Cape York, Kimberley, Simpson Desert, Canning Stock Route) where terrain changes rapidly and having the wrong pressure for even a short section can mean getting bogged or damaging tyres. You want the ability to adjust pressures on the move without stopping. You’re building a serious touring rig and plan to keep the vehicle long-term. Cost: $3,000-8,000+ installed.
Quick Comparison
| Level | Products | Cost | Time (4 tyres) | Stop Required? | Best For |
|---|---|---|---|---|---|
| 1: Individual | Staun + ARB/Mean Mother compressor | $150-600 | 25-35 min | Yes (twice) | 90% of Big Lappers |
| 2: Mounted | Clearview Tyre Spider | ~$390 + compressor | 10-15 min | Yes (faster setup) | Frequent off-road touring |
| 2: Portable Manual | Tuff Terrain 4-Valve / Maxitrac 2-Tyre | $100-200 + compressor | 12-18 min | Yes (twice) | Regular off-road, budget-friendly |
| 2: Portable Digital | Tuff Terrain Pressure Pilot | ~$200-300 + compressor | 10-15 min | Yes (set and forget) | Precision, staggered pressures |
| 3: True CTIS | AIR CTI / Rapid Inflation Systems | $3,000-8,000+ | 0 min | No (on the move) | Serious off-road, daily air-downs |
- Most Big Lappers only need Level 1: a set of Staun auto-deflators and a quality portable compressor
- Level 2 multi-tyre systems are worth it if you air down weekly or more, with options from ~$100 (manual) to ~$390 (mounted)
- The Clearview Tyre Spider is the best mounted option, with a “borrow air” function that can inflate a flat from the other three tyres
- 2-tyre systems can be more practical than 4-tyre systems if you run different front and rear pressures
- True CTIS is a serious investment ($3,000-8,000+) for serious off-roaders who adjust pressures daily
- AIR CTI is the most established aftermarket CTIS manufacturer in Australia (since 1998)
- Be honest about how often you’ll actually air down before spending thousands on equipment you’ll rarely use
Comment (0)