Nitrogen filled tyres

[otolith]

El Guapo said:

Not so. PV=nRT, so a tyre filled with dry nitrogen will experience an increase in pressure as temperature rises comparable to a tyre filled with moist air.

http://en.wikipedia.org/wiki/Ideal_gas_law

The key point is filling it with a dry gas - water undergoing a phase change screws up ideal gas predictions!

[GC8]

PJI said:

Don't waste your time.

Nitrogen will only work if it is filled in a air free tent in the same way a F1 team would. If you do not remove all the air it is pointless.

This blindingly obvious point has been ignored and always seems to be overlooked! The tyres have a whole tyre full of air in when they are fitted, so a nitrogen fill is pointless.