Originally Posted by Sandgrounder
I think that there is a potental problem with valve stems and caps when adding nitrogen, somehow tied into the TPMS system, corrosion comes to mind. AH time to do a search

Wikipedia
Nitrogen (pronounced
/ˈnaɪtɹəʤɪn/) is a
chemical element that has the symbol
N and
atomic number 7 and
atomic mass 14.00674µ. Elemental nitrogen is a colorless, odorless, tasteless and mostly
inert diatomic gas at
standard conditions, constituting 78% by volume of
Earth's atmosphere.
I do not think we need to worry about oxidation with nitrogen, only from oxygen and oxygen compounds, water, salt and ozone, acid rain etc.