I’ve been carrying a VIAIR compressor in my cars for the past 15 years or so. When I was doing instrumented vehicle testing, before any car turned a wheel in anger, we’d get corner weights, torque the ...

Practically every time our tires hit the dirt, we air down. It makes such a tremendous difference in the ride quality and performance of the vehicle, it’s absolutely silly not to. Airing back up is ...

Viair’s portable air compressor offers a back-to-basics pump with an analogue gauge and power that comes directly from the vehicle’s battery via clamps. It’s fairly compact, weighing only 4.5 pounds ...

If you have been reading4WORfor long you have likely heard us extol the virtues of airing down your tires on the trail for increased traction and an improved ride. Airing down can be as easy as ...

This article was updated in September 2025 with new products and information. A portable tire inflator is an important tool to add to your vehicle's emergency kit. But, as with many things in the ...

There’s no polite way to say this. It stinks to get a flat tire and stinks even more when your spare is also flat. As a veteran road warrior who drives 4,000 miles roundtrip each year between the ...

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When you’re stuck in a remote location with a flat tire, need a quick inflation solution at home or in your workshop, or require adjustable tire pressure for off-road traction, a portable tire ...

Having air on demand can save you from a trip to the gas station or a hefty roadside assistance fee. I love two-seater, RWD convertibles and own a 2004 Mazdaspeed Miata for pavement fun and a lifted ...