Green Valve Stem Covers
I went to add some air into my tires for my camper and noticed they were green valve stem covers. I remember someone telling me once that green caps usually indicate the tire is filed with nitrogen. D...
Forum Discussion
ktmrfs wrote:
The vapor obeys boyles law, the liquid does not. That affects how temp changes affect tire pressure.
Again, for most consumer applications, it will not make enough difference to be signficant or affect operation.
Pull out the H2O phase diagram, it takes a lot of heat to begin having a meaningful impact on pressure. Boyles law falls apart with differences in temperature. In addition water vapor changing to pure gas is where you would see big pressure changes...
I stand by my statement, automotive tires will never see the type of temperatures that will cause steam.
