![]() ![]() It’s more hassle and eats into trail time. That said, each time you use a portable air compressor unit, you have to unpack it, connect it to the battery, let it cool down, and then pack it back up. You can also move them around (as far as the battery clip wires will allow) so you don’t have to stretch the air hose so far to reach the tire valves. Portable air compressors offer more flexibility than onboard units, as you can move them between vehicles. Smaller models can often plug into cigarette lighter ports, but these models may be too small for larger truck tires. Portable off-road compressors are carried in a bag or case that you take in and out of your vehicle as needed and are clipped to the battery terminals when needed. Cons: High cost of initial installation might not fit some engine bays without modifications upgrades and repairs to the compressor are more costly/time-consuming Portable Off-Road Air Compressors.Pros: Convenience on the trail multiple uses, including powering air lockers and tools.No more climbing out and twisting the hub on the wheels like in the olden days. Typically, when an onboard system is installed, switches are integrated into the dash or somewhere else on the vehicle so the differentials can be locked from inside the cab. Larger onboard compressors can also power air tools, such as air impact wrenches for removing wheel lugs. They also typically serve multiple purposes, as on-board air compressors also power pneumatic control for air-lockers for differentials in axles. On-board air compressors offer convenience, as they are already connected and ready to go when you need them. On-board air compressors are mounted to your vehicle, in the engine bay, or somewhere else on your vehicle and remain wired to the battery. A third option, popular among offroad racers and hardcore wheelers, are portable air tanks filled with CO2 or nitrogen that rapidly inflate a tire, as the gas expands quickly. There two common types of tire-inflating air compressors, on-board and portable. For an onboard air compressor, take a look at ARB’s 12 Volt Twin Onboard Air Compressor. For larger tires (up to 37 inches), Viair’s 440P compressor will do the trick. ![]() In case you are looking for a quick recommendation, I’m a fan of the Viair 400P Air Compressor, which can inflate tires up to 35 inches (the size on my Jeep). This guide will explain the different types of off-road air compressors, how they are used, and offers some tips on choosing the right compressor for your needs. An air compressor will also come in handy in case you need to reduce your tire pressure to get more traction in a recovery situation. Many owners of Jeeps, Land Cruisers, Broncos, Tacomas, and other SUVs and trucks will also adjust their air pressure on the trail depending on the terrain. The ability to inflate your tires after airing down, whether voluntarily or involuntarily (a.k.a, “a flat”), is one of the pillars of being safe and having fun off-road. One of the most critical pieces of gear for off-roading and overlanding is an off-road air compressor for refilling your tires. ![]()
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