Vehicle Inspection Systems (VIS) automated the tire-inflation process with a nitrogen inflator that can help eliminate under inflation, the leading cause of premature truck-tire wear.
With its inflation controller, VIS-Nitro can fill four commercial tires simultaneously.
"All the technician has to do is clip the four chucks on and set the pressure," says Miles Fuller, president of VIS. "The machine beeps when it's done. It also has an automated purge cycle that vents air from an inflated tire and replaces it with high-purity nitrogen produced by VIS-Nitro."
Depending on tire quality, tires can lose more than 2 psi per month as a result of compressed air passing through the sidewalls. According to VIS, the mileage you can expect from a tire running 20 percent below recommended pressure at normal speeds is cut by 16 percent, and fuel economy drops 2 percent.
Studies show that tires filled with nitrogen retain pressure better than those filled with air. Nitrogen's larger molecules penetrate rubber more slowly than oxygen, and nitrogen is far less corrosive. Nitrogen-filled tires retain pressure longer, reducing risk of blowouts and extending tread life and retreadability.