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 ...

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 ...

Should you get a portable, automated tire inflator? I test the VIAIR EVC31 PRO: it’s a compact, capable tire Inflator tested in real-world scenarios. The VIAIR EVC31 PRO is a compact, powerful, and ...

New perk: Easily find new routes and hidden gems, upcoming running events, and more near you. Your weekly Local Running Newsletter has everything you need to lace up! Subscribe today. In this episode ...

We may receive a commission on purchases made from links. Preparing for an emergency is always a smart idea, considering you never know when you're going to be in a sticky situation, especially in a ...

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 ...

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