Nitrogen in Trailer Tires
Getting new tires & they recommended filling with Nitrogen:low air loss, no expansion or contraction with temp changes. I cant find any literature or articles about this subject. Anyone with experienc...
Forum Discussion
mat60 wrote:Nitrogen obeys the same gas laws as other atmospheric gases. There is absolutely NO difference in heat expansion.
Back in the day I raced stock cars and we used nitrogen in our tires thinking it would help slow down the expansion of the tires as they build heat.
What does make a difference is moisture, which you also get from air. Industrial grade N2 might have 5 ppm of moisture (~0.03% relative humidity @ 70F). Even dry desert air might have hundreds of times that. For today's Daytona race, right now it's 73F and 72% RH. That's ~12000 ppm moisture.
Compressed N2 can simply be a more convenient source of dry gas than a compressor and good dessicant dehydrator. Nitrogen is just the cheapest compressed dry gas available.
