Nitrogen is an inert, dry, non-flammable gas that's used by NASCAR racers, the aircraft industry, the U.S. military, Formula One racers and others to inflate tires. So why do the tires on a truck or the family sedan have "plain old air" in them?
Well, it's probably because the owners didn't know about nitrogen and the benefits of using it instead of "plain old air". And frankly, it hasn't been readily available at local tire stores because there hasn't been a way to produce or provide nitrogen to the average user.
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 tires, oxygen is the culprit. Nitrogen in tires instead of "plain old air" maximizes the vehicle's handling, fuel efficiency and tire life through better tire pressure retention, improved fuel economy and cooler running tire temperatures.
Better Maintenance of Tire Air Pressure
Because of the larger molecular size of Nitrogen, it migrates through a tire 3 to 4 times slower than oxygen.
Lower Fuel Consumption
Better tire air pressures improve rolling resistance and reduce the risk of running tires under-inflated.
Absolutely not. Nitrogen is an inert gas, which means that it does not support combustion.
Extended Tire Life
With tires maintaining better pressure, tire life can be significantly extended.
Oxidation is Eliminated
With Nitrogen, there is no more oxidation of inner liners, belt packages, valve stem hardware or air pressure monitoring devices.
Nitrogen doesn't cause tire rubber to break down as quickly as regular air and with the elimination of oxidation, Nitrogen filled truck tires have often had 4 or more retread lives.
Stronger casings = more retreads.
No More Rim Rust
Nitrogen is completely dry. Condensation is eliminated.
On the Road Reliability
Decreased tire failures reduce costly down time.
It won't harm your tires to "top them off" with regular air if necessary... but the more air you put in, the less benefit you'll get from the remaining Nitrogen in your tire. It is important to get your tire re-filled with Nitrogen when possible.
No, Nitrogen is a natural inert gas that makes up 78% of the air we breathe.
|Dry and Clean||Oily and wet|
|Remains stable at any temperature||Highly reactive element at high temperatures/pressures|
|Eliminates condensation which prevents rim rust||Creates moisture in the rim leading to rim rust|
|Slows migration to only 2psi loss over 6 months||Fast migration, 2psi is lost each month|