A lot of focus goes into lift kits, bigger tires, and winches but some of the most important 4×4 recovery gear are air compressors and air gauges. Even harder to see is the hard work that air gear does for you on the trail to help keep your tires inflated down to the optimal pressure, and then inflate back up to highway pressure quickly to get you back to the blacktop. Tire pressure on the highway is optimized for speed, fuel efficiency, and handling but on the trail that same tire pressure keeps your tires rigid and narrow thus increasing the chance of bouncing off rocks or digging into soft dirt.
We treat our air gear as we would ropes and shackles for off-road recovery. Airing down down helps prevent getting stuck in the first place, while a good air compressor for re-inflating tires helps get you back on the road when needed.
Why an Off-Road Air Compressor Belongs in Every Rig
Tire pressure for on-road driving is typically set for optimal speed, fuel efficiency and handling. However, on the trail, tire pressure set for highway use keeps tires tight or even, causing them to scrub against rocks and punch into soft dirt rather than providing a good grip. By lowering tire pressure, a tire’s sidewalls and crown will increase in width and become more flat, resulting in a larger contact patch which allows improved grip on rocks, increased float in sand and reduced chance of wheel spin in muddy situations.
Finally, recovery off the trail is just as important as navigating down it in the first place. Depending on the type of tires you have equipped, there is the potential for a tire to run extremely hot after extended use at lower than normal pressure. This can lead to rapid wear in the center tread area and even suffer a blowout under extreme circumstances. Furthermore, there is no greater annoyance when traveling cross-country than searching for a gas station that has air available and is open. Being able to fill up for highway pressure at the trailhead is a real time-saver.
What to Look for in a Portable Air Compressor
There are many compressors for personal use that are for topping off tires. They are typically plug-in, are small enough to sit on a workbench, and can not keep up with inflation of very large off-road tires. We discuss the important features to look for when purchasing a portable air compressor for use on the trail.
Airflow (CFM). The volume of air delivered per minute (in cubic feet per minute). Larger tires need higher CFM air flow in order to fill up faster. Thus, it saves the most time.
Pressure output (PSI). The compressor must be able to put out enough PSI to fill the highest pressure tire(s) in your rig’s wheel wells. Typically this is for the driver’s side front tire but some of the higher pressure off road tires can reach into the 35-40 PSI range.
Set-and-forget controls. This is simply the ability to set the desired pressure for a tire, and have the air compressor automatically shut off when the correct pressure has been reached.
Built for heat and dirt. Durable parts, good cooling, and safety features such as a thermal cutoff are also important for off-road use to enable long fills in harsh environments. When operating an air compressor for long periods of time it is easy to get concerned that the unit will suffer damage from excessive heat.
The Freedom Flate Air Compressor and Air Tools
Our Freedom Flate line of air compressors and air tools are specifically designed for the off-road enthusiast. The items below are the recommended air compressors and air tools for serious 4x4 trail use.
Freedom Flate Air Compressor (Set Target Pressure with Auto Shut-Off)
This air compressor is a 12V dual cylinder unit that puts out 12.35 CFM at 100 PSI. The two cylinders in this air compressor work in conjunction with each other to fill up large off-road tires in a hurry. Set the target pressure and the Freedom Flate Air Compressor LCD screen will display the current pressure. Once the target pressure has been reached, the compressor automatically shuts off. It has aluminum components to enhance heat dissipation and a stainless steel hose to enhance durability. Also, there is a thermal cutoff as well as a purge valve to guarantee safe operation. It is a dual motor air compressor so in a remote area, you have a back up in case one of the motors fail. In addition to filling up tires, the Freedom Flate Air Compressor can be used to fill up rafts as well as run other air tools. The push-to-connect couplers make connecting up to the air source easy. In addition to the easy connecting couplers, a carrying bag is also provided for storage of the compressor and hoses.
Freedom Flate 12V Dual Cylinder Auto Air Compressor & Freedom 4 WAY Inflate Deflate Kit
This kit includes everything you need to get started with inflation and deflation of your off-road vehicles. The Freedom Flate Air Compressor 12V Dual Cylinder Auto Air Compressor with hoses extended to 10’ and the Freedom 4 WAY Inflate Deflate Kit for your 4x4. This kit is the fastest way to Air Down a tire at the trailhead for mud and sand running and Air Up at higher pressure for on-road use to highway driving.
4 Way Rapid Tire Inflate/Deflate System
Already have a compressor you like to use for your tire inflation? Use this professional-grade 4-way Rapid Tire Inflate/Deflate System for the ultimate in tire pressure control on the trail. This system can be used to Inflate or Deflate all 4 tires at the same time to get all tires up to or down to pressure as fast as possible and have them all end up at the same pressure. Compatible with all types of vehicles, including UTVs, cars, Jeeps, and small or full-size trucks.
Digital Air Gauge (0-150 PSI)
An accurate handheld digital tire gauge is a very useful item to add to your repair kit as well as to your off-road recovery gear. This new digital tire gauge forms a tight seal on the valve with the special formed nozzle end. This provides an accurate and repeatable PSI reading every time. Having accurate tire pressure will extend the life of your tires as well as improve their performance.
Air Gauges and Air-Down Tools: The Other Half of the System
A compressor fills up air to pressurize your tires. Air gauges read off the current pressure in your tires. To manage the pressure of your tires, it’s helpful to have both a good compressor and good gauges to read the pressure. Digital gauges are good to read off low pressures in dark environments and have a numeric readout to understand the current pressure.
Pair an air gauge with a deflator, like the Digital Tire Deflator. It includes a valve stem remover and has a sliding hose collar to start and stop air flow. It’s easy to read, with blue backlit display that shows the current pressure as it decreases. See the image below for more information. Note that the amount of deflation needed will vary depending on the tire, wheel size, weight of vehicle and intended use (i.e. mud, sand, rocky trails, etc.). It’s best to start with the minimum recommended amount and check the pressure after a few miles to determine if more deflation is needed.
Where an Air Compressor Fits in Your Off-Road Recovery Gear
Recovery gear is generally left at home and comes out after a vehicle has gotten stuck on a trail. A good collection of kinetic rope, soft shackles, and winch lines is generally considered minimum required recovery gear. However, the best recovery is the one that never has to happen. By properly lowering the air pressure in your tires before venturing into mud, sand or rocky areas you can reduce the chance of getting stuck in the first place.
The same rules of recovery also apply to vehicle recovery – the proper pressure of tire will allow for better traction. A vehicle stuck in the mud may require a gentler pull with a rope or strap to regain traction and become free. This is why air compressors, air gauges, and air-down tools should be included in your off-road recovery gear. They may get used once a year but can be the difference between getting stuck and recovering your 4×4 on the trail.
Keeping Your Air Compressor and Gauges Trail-Ready
Store your Air Compressor in the carrying bag provided for the off season. Clean the hoses and couplers periodically to keep them clean and able to form a tight seal. Store your air Gauges in a padded pouch in a cool part of the vehicle and protect from hot dashboards. Clean the nozzle of your Gauges regularly. Check your Gauges against another on occasion. If the readings between two identical Gauges start to drift then it is time to get new Gauges.
Air Up with Confidence on Every Trail Day
Improving traction, long tire life and enabling you to continue your journey are all importance when off road. The Freedom Flate Air Compressors and Air Tools can help you with your off-road recovery gear. We recommend you shop our entire line of Freedom Flate Air Compressors and Air Tools.
Frequently Asked Questions
1. Why do I need an air compressor for off-roading?
After airing down for the trail, you need to reinflate your tires to road pressure before driving on pavement. An off-road air compressor lets you air back up at the trailhead instead of searching for a gas station pump.
2. What size air compressor do I need for large off-road tires?
Look at airflow first. CFM measures the volume of air delivered per minute, and a higher CFM fills large tires faster. The Freedom Flate delivers 12.35 CFM with up to 150 PSI of output.
3. What does auto shut-off do on an air compressor?
You set your target pressure on the display, and the compressor stops automatically once that pressure is reached, which makes inflation easier and helps prevent over-inflation.
4. Can a portable air compressor inflate more than tires?
Yes. The Freedom Flate Air Compressor can inflate everything from daily driver tires to high-pressure off-road tires, rafts, and even air tools.
5. What is a 4-way inflate/deflate system?
It connects to all four tires at once so you can inflate or deflate them together, bringing every tire to the same pressure quickly.
6. Do I still need air gauges if my compressor has a built-in gauge?
A handheld air gauge is a convenient way to check pressure when the compressor is packed away and to verify readings during the day.
7. Are digital air gauges better than dial gauges?
Digital air gauges are easier to read, especially in low light. Dial gauges work without batteries but have smaller needles that can be harder to read.
8. Why should I air down my tires off-road?
Lower pressure widens the tire footprint, improving grip on rocks, float in sand, and traction in mud.
9. Is it safe to drive on the highway with aired-down tires?
No. Low pressure at highway speeds builds heat and increases tire wear, so always air back up with your air compressor before leaving the trail.
10. Are air compressors and air gauges considered off-road recovery gear?
Yes. They help prevent getting stuck, can add traction during a recovery, and get you back to safe road pressure, making them a valuable part of any off-road recovery gear kit.