I'd imagine this was discussed at some time If you get rid of the ~21% O2 - - - The logical advantages: Displace moisture which will reduce tire warming pressure rise Displace moisture which will reduce corrosion risks / issues in rim Reduce O2 which will reduce corrosion risks / issues in rim The ~21% O2 in our atmosphere will support slow & fast oxidation ie rust & burning. Soo, will it give any benefit to tires aging out? If tires start do degrade in X years, will using N2 give X+? years? Any data on this? Or anybody care to share any observations? Even adding one year would be great. Maybe if done when tires are as new as possible? I've come across lots of negative stuff. Waste of $ etc etc. But the F cars are pretty precious, and doesn't sound horribly expensive relatively speaking. Typically we go for the best oils, waxes and don't give it a second thought. Thanks and Happy New Year !!