Nitrogen tires

CapriRacer wrote:

paulcardoza wrote:
OK.... I tried to not comment on this ridiculous thread, but......
How does water evaporate from inside a sealed tire? :h

The same way it evaporates in an open container - into the non-saturated air. The only difference is that the water VAPOR then has to migrate through the rubber - which it does due to the "Law of Partial Pressure of Gases". The water will always be in a vapor form unless the air inside the tire reaches 100% humidity - then the water condenses out.

The article of capriracer and an article of J.C.Daws ackowledged my suspicion that Oxigen and water when it a gas, can go from outside to inside the tire , against the high pressure. A while before this I supposed it in a Dutch topic, but it was rediculed away bij comparing it to electric curent, wich is one way.

I rather talk about water as a gas , because vapor is the same as damp, and that are verry little water drops.

My new suspicion is that liquid water or vapor water does not or much less diffuses trough the rubber as Water as a gas, wich it is in lower then 100% humidity air. Water as a gas does go trough the rubber the same as all gasses, would like to know at wich speed comparing to Nitrogen for instance. Oxigen , i once or more read, goes 5 times faster trough the rubber then Nitrogen.

This can cource that by temperature chanches and humidity-chanches of the outside air, whatever effort you take to get as less water in the tire as possible, there will be getting more water in it, or the inside tire gets dryer in the long run. That is something I want to find out. like to get wiser on that.

If there is liquid water in the tire, Oxigen and mayby carbondioxide, and even Nitrogen can dissolve in that water , wich lowers the pressure because of less vollume gas total. The gas inside the tire that is dissolved in the water, takes less space then in the gas.

For oxigen in any case, there is always a percentage of total ,belonging to the pressure , that the tire-inside will work its way to.
Going from 20% Oxigen in the outside air, it will be about 5% for 3 bar/44psi, 4% when 4bar/59psi?, 2% for 9 bar/ 130 psi, and 10% for 1 bar/14.5 psi.
At that moment the partial pressure of Oxigen is inside the tire the same as outside the tire ( 0,2 bar /3psi), and there will be going oxigen in to the tire yust as fast as it is going out, so there is a balance.
At that moment only Nitrogen diffuses out trough the tire.
Leaking is another thing , there are no little holes in the rubber.