Nitrogen in tires is becoming a popular replacement for standard air.
Nitrogen is all around us... the air we breathe is 78% nitrogen, 21% oxygen and
the rest is small amounts of other gasses. When it comes to tire inflation,
nitrogen has many advantages over oxygen. With nitrogen tire inflation,
improvements can be noted in a vehicle's handling, fuel efficiency and tire life
through better tire pressure retention, improved fuel economy and cooler running
tire temperatures.
How you can save up to $300/year! (and how America can save billions of gallons of fuel) Driving on underinflated tires? If you are, it's like driving your car through
sand! The engine has to work harder, burning more fuel and adding wear to
engine components. It's also dangerous. Almost all tire blowouts are caused
by underinflated tires. Tires lose 1-2 PSI every month!. That's 6 PSI low by the
time you have your oil changed!
If you are one of the 85% of Americans who don't
regularly check tire pressure, you need nitrogen.
Because of their large size, nitrogen molecules are the least permeable and
stay in your tire longer.
It's not about the nitrogen. It's about reducing
oxygen, water vapor and other gases.
By reducing the percentage of oxygen, water vapor and other gases in your
tires from 22% to 7% or lower, your tires will maintain proper pressure longer
than if you use plain old air. For example, with 95% nitrogen in your tires,
they retain optimal pressure three to four times longer.
Proper tire pressure is a big deal. Maintain
it with nitrogen, and you'll see these three primary
benefits:
Increased Fuel Efficiency: Correct tire pressure keeps the
manufacturer's recommended contact patch on the road. This lessens the rolling
resistance and maximizes fuel efficiency.
Longer Tire Life: When it comes in contact with other
materials, oxygen causes oxidation. Oxidation can make rubber brittle and cause
it to lose tensile strength. In addition, at high temperatures and pressures,
oxygen reacts and damages inner tire liners and belt packages; nitrogen does
not.
Increased Safety: Under-inflated tires cause 90% of
blowouts. Nitrogen provides more reliable pressure for reduced blowout
potential.
Other benefits:
Improved TPMS Performance: If you have a new car, you
likely are plagued by a flashing light telling you your tire pressure is low.
For example, one woman's light was going off every four to five weeks. After
inflating with nitrogen, her light didn't reappear for 53 weeks!
More Predictable Pressure Fluctuation: NASCAR teams use
nitrogen so they can more accurately predict tire pressure fluctuation. Regular compressed air can fluctuate considerably when water vapor
is present.
Longer Rim Life: Rim rust caused by condensation from
water vapor and other gases can get caught in valves and create slow leaks in
tires. Nitrogen is completely dry, so it eliminates the potential for
condensation.
Who Else Is Using Nitrogen?
NASCAR - NASCAR teams use nitrogen because it allows them
to more accurately predict tire pressure fluctuation. Nitrogen fluctuates with
temperature change, but it does so less than when water vapor is present.
Commercial Airlines: The Federal Aviation Administration
(FAA) requires nitrogen in all commercial aircraft tires to eliminate the
potential for water vapor (inherent in normal compressed air) from freezing at
high altitudes. In addition, aircraft manufacturers such as Boeing use nitrogen
membranes in their On-Board Inert Gas Generation Systems (OBIGGS) to "top" fuel
tanks with nitrogen - an inert gas that does not support combustion.
U.S. Government: NASA and the U.S. military use nitrogen
for many of the same reasons it used in commercial aircraft.