basskisser wrote:

basskisser wrote:

nitrogen helps tires run cooler

Only because when nitrogen is used instead of air, the pressure to
temperature ratio is more linear.

Rick wrote:

You really ought to stop kissing fish, it has diminished your powers of
reason.

Basskisser whined:

Well, then, please explain to the world how in the HELL nitrogen will
make a tire run cooler.

It doesn't. The tire heats the gas by conduction and radiation as it
flexes. The gas doesn't heat the tire. Only reducing tire flexure will
make the tire run cooler. It doesn't matter one single molecule what the
gas filler is.


Now, Im again telling you that the ONLY reason is that the
pressure to temperature ratio is more linear. Do you refute that?

Yes, along with many generations of scientifically literate people, I do
refute that bonehead statement. Nitrogen follows the gas laws just as
every other gas. Your interpretation of natural phenomena and physics
will not change the gas laws for one gas in one application.

The nitrogen doesn't expand as much as air, for a given
temperature change. Therefore, the nitrogen doesn't increase tire
pressure as much as air, when the temperature starts increasing.

Please refer to the gas laws. You cannot rewrite them as much as you
would like to believe you have.

BUT, the nitrogen does NOTHING to keep the temperature of the tire
from increasing, or decreasing for that matter.

Well done, you are beginning to get it. However:

You started this by writing:

nitrogen helps tires run cooler

Only because when nitrogen is used instead of air, the pressure to
temperature ratio is more linear.

Try and keep your story consistent. That statement reads that nitrogen
keeps tires cool because it doesn't expand like air. Both statements are
false.

You may believe the gas laws are suspended for automotive applications
but do try at least to keep track of your misapprehensions.

I think most of this nonsense about nitrogen in tires not expanding as
much as air comes from the fact that few people really understand the
properties of gases. There is a little phrase in the gas laws that
refers to "phase change" ... that is where the followers of the myth may
be running aground - (boating content).

Liquid nitrogen will vaporize to produce a volume of gas that occupies
about 700 times that of the liquid. Liquid oxygen will vaporize to
produce a gas that occupies around 860 times the volume.

Vaporization is the phase change. Once the liquid has evaporated the
resultant gas, nitrogen, oxygen, or water vapor, will follow the gas
laws and when the correct law is applied (there are several) the
properties of those gases are very predictable and if you understood
them you would see that the properties of those gases are identical in
their behavior under the conditions which race car teams and trailer
boaters operate.

Rick