The Science of Nitrogen Tire Inflation

Fuel & Tire Saver - Science of Nitrogen

The Abuse of Tires

Your fleets’ tires are among the most important safety features. You pay attention to fuel and oil levels of your vehicles to ensure optimal operation, so why don’t we pay more attention to proper tire inflation?

Tires are tough and can take a lot of abuse, but when they are not properly maintained you’re at risk of a critical failure. The leading cause of tire failure is underinflation.

Inflation Comparison

Modern Science Meets Fleet Tire Pressure Maintenance

Since 2004, nitrogen has been replacing air in cars, trucks, and heavy equipment. The fact is, it is superior to air in maintaining pressure in any temperature. When tires maintain pressure, bus safety improves, fuel economy gets a boost, tire lifetime is extended and maintenance costs go down.

Fuel & Tire Saver performs on site tire services that include Nitrogen-only inflations. FTS uses Nitrogen in all of our tire fills because this one small change in tire maintenance, particularly in heavier, multi-tire vehicles, can save fleets thousands of dollars annually. Try us today.

Improved Tire Safety

Increased Vehicle Efficiency

Reduced Fuel Costs

Reduced Tire Maintenance Time

Find Out How Your Fleet Can Benefit from N2 Right Now

Too often, FTS arrives on site to find buses regularly operating at over 35% underinflation, risking lives and wasting money on tire expenses, man hours and gas mileage. It all adds up.

Let FTS provide you with an on site Fleet Analysis to see how your fleet performs and learn more about how FTS on site service can improve your fleet’s safety and efficiency.

The Case For Our Astraea III Nitrogen

Astraea III Nitrogen logo

Nitrogen provides better tire pressure retention during the daily life of a tire. Nitrogen molecules are larger and less likely to escape through the tire wall, maintaining tire pressure, improving handling and fuel economy all while reducing tire wear. The secret to successful use of nitrogen is consistent and regular inflation with high quality nitrogen gas.

oxygen vs nitrogen diagram

Regular Air Filled Tire

  • Tire heats up fast
  • Air easily permeates the tire wall
  • Air pressure reduced frequently
  • Moisture causes large swings in tire pressure

Nitrogen Filled Tire

  • Tires remain cooler
  • Air pressure retained for longer periods
  • Lighter tires
  • Dry, high-quality nitrogen is more stable and eliminates drastic pressure swings

The Daily Cycle of a Tire

On a daily basis, tires go through many different phases. These cyclical, constant changes have a negative, compounding impact on tire life and tire tread.

Because air inflated tires leak oxygen molecules through the rubber tire membrane, underinflation speeds up the cycle even more. Proper nitrogen tire inflation is the answer to this destructive cycle because nitrogen can sustain higher heat levels triggered during use, and bigger N2 molecules don’t leak from the tires at the same rate as air.

Fuel & Tire - Tire lifecycle graphic

FTS is Nitrogen PLUS

Predictive Fleet Maintenance with Consistent, Quality Data

Our proprietary mobile nitrogen tire inflation service vehicles provide you with consistent data and reporting to accurately and efficiently refine budgeting. Get Your Own Fleet Tire Efficiency Analysis today.

School Bus Tire Status Diagram

Vehicle Tire Life Map

Shows the on-vehicle tire inventory and expected tire replacement date. Eliminates premature replacement costs and promotes predictive replacement scheduling.

Tire Life Heat Map

Tire Life Heat Map

Shows tire life by vehicle, by tire position, for the entire fleet. Allows maintenance team to focus on near-team problem areas with confidence that the rest of the fleet is in good shape.

FTS MPG Improvement Chart

FTS MPG Improvement Chart

Through our proprietary tire management solution, we also track MPG improvement from our service, which provides a window into efficient bus operations.


Nitrogen Inflation of Tires

In this study, Exxon Mobile Chemical put Nitrogen (N2) inflated tires through a variety of testing protocols for endurance, durability, and performance. The tests proved a reduced level of oxygen in the tires. Oxygen in compressed air can lead to rubber degradation, which leads to bad tire performance. Read the study to see the full…
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Effects of Nitrogen Inflation in Tire Aging and Performance

Using Nitrogen (N2) tire inflation instead of compressed air provides many advantages in tire performance including higher air pressure retention, linear volume expansion with temperature, and improved  structural durability. This paper investigates the full effects of N2 inflation on passenger tires. Read more.
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Race Tire Inflation – Nitrogen Versus Air

Properly inflated tires are crucial in racing. Research suggests using Nitrogen (N2) instead of compressed air. Why? Compressed air contains moisture. When the tire gets hot, the moisture in the compressed air causes the air in the tire to expand at a faster rate than N2.  Read more.
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