Is nitrogen PSI the same as air psi?

The average pressure loss was 2.2 psi and 3.5 psi, for nitrogen and air, respectively, meaning nitrogen has a slight advantage over air.

Is tire pressure the same with nitrogen?

Promoters of nitrogen tires point out they don't lose tire pressure as fast as air-filled tires. Since nitrogen molecules are bigger than normal air molecules, it is harder for them to leak out. This means a tire filled with nitrogen will maintain air pressure longer.

Is it OK to add air to nitrogen filled tires?

Using compressed air in tires that have previously been filled with nitrogen will not harm your tires. While mixing the two won't result in an adverse chemical reaction, it will dilute the purity of the nitrogen and lessen its effectiveness.


What is the PSI for nitrogen filled tires?

They set the inflation pressure to 30 psi at room temperature, put the tires outside and waited a year. After that year they checked the inflation pressure again. The results showed that the tires filled with air lost on average 3.5 psi and the ones filled with nitrogen 2.2 psi.

Can I use nitrogen instead of compressed air?

Nitrogen or N2, is a dry, inert gas used as a tire inflation medium typically inflated to at least 95% purity. Unlike regular compressed air, nitrogen is less prone to expansion, assuring more consistent pressure increases due to increases in operating temperatures because of the absence of moisture.


Nitrogen Vs Compressed Air Filled Tires - what you need to know



What is difference between nitrogen air and normal air?

Using Nitrogen in Tires

Nitrogen is an inert (non-flammable) gas – basically, nothing more than dry air with oxygen removed. In fact, ambient air contains about 78% nitrogen, 21% oxygen and 1% miscellaneous gas.

What percent of compressed air is nitrogen?

Traditionally, vehicle tires are filled with compressed air. Air is 78 percent nitrogen and just under 21 percent oxygen, and the rest is water vapor, CO2, and small concentrations of noble gases such as neon and argon.

Can you mix nitrogen and air?

Actually you can mix regular air and nitrogen, but with risks. Some facts. Nitrogen has a larger number of molecules than air, so it can maintain tire temperature at bay.

What are the disadvantages of nitrogen filled tires?

Disadvantages of Nitrogen:
  • Nitrogen inflation is quite costly when compared to oxygen. ...
  • Maintenance of nitrogen filled tyres is also quite tricky because once you have filled nitrogen inside your tyres, it is necessary that you have to use only nitrogen whenever you are up for an air filling.


Does cold weather affect nitrogen filled tires?

Nitrogen is a gas and is still affected by changes in ambient temperature (about one psi for every 10° Fahrenheit). Nitrogen filled tires will require pressure be added during the fall/winter months as ambient temperatures and tire pressures drop. Nitrogen is good but can't change the laws of physics.

Can you put nitrogen in regular tires?

There will be less moisture inside your tires, which means less corrosion on your wheels. However, if your tires were filled with nitrogen (usually denoted by green valve-stem caps) and you're low on pressure, don't be afraid to bring up your psi with regular old air.

Does Walmart put nitrogen in tires?

Click to enlarge. As of April, ISG said in a press release, 28 of Walmart's 54 fleet service centers are using the ISG nitrogen system, with installation of the system due to be complete and the remaining centers by the end of this year. Nitrogen tire inflation can provide savings in fuel consumption and tire wear.

How do I know if my tires are filled with nitrogen?

The easiest way to tell if you have nitrogen in your tires is to look at your tire caps. If they are green, then your tires likely have nitrogen. If you need to “double check” then a tire shop will be able to do this for you. However, in the first instance simply look out for the green caps.


How long do nitrogen tires last?

On average, tires filled with air lose about 1.5 psi every month, whereas tires filled with nitrogen will lose that amount in about 3-4 months.

How much does Costco charge to fill tires with nitrogen?

Though the cost of nitrogen is typically pricey ($3 to $5 per tire), Costco is offering its nitrogen amenities free with tire purchase and provides fill-ups for the life of the tire, according to Moyer.

Which is better nitrogen or air in tires?

Nitrogen vs Air – Maintenance of tyre pressure

Nitrogen has a slightly upper edge when it comes to loss of inflation pressure. This is because molecules of Nitrogen are larger than that of air, thus moving slowly and maintaining the pressure for longer.

How much lighter is nitrogen than air?

Nitrogen is 3% lighter than oxygen, but there's only 22% oxygen in air, so the difference in weight from all 4 tires is 0.3664 grams, that's a whopping one third of a gram! To put it in perspective, one official ping pong ball weighs 2.7 grams.


Is nitrogen lighter than air?

Nitrogen. Pure nitrogen has the advantage that it is inert and abundantly available, because it is the major component of air. However, because nitrogen is only 3% lighter than air, it is not an obvious choice for a lifting gas.

How much does it cost to fill your tires with nitrogen?

If you purchase a new vehicle and want nitrogen-filled tires, you can expect to pay anywhere from $70 to $175. If you would like to fill existing tires with nitrogen, the initial fill-up will cost about $30 per tire. That's because the existing tires need to be purged of their oxygen with multiple nitrogen refills.

Does nitrogen affect tire pressure sensors?

Nitrogen and tire pressure monitoring systems are completely compatible. A tire pressure system works exactly the same regardless of whether the tires are filled with air or nitrogen. Also, nitrogen will not corrode or negatively affect a TPMS in any way.

Who fills tires with nitrogen?

Tire centers nationwide use nitrogen to fill tires. They can sell a new tire and fill it or top off a tire brought in to them. Tire centers may charge a significant fee to fill a tire with nitrogen.


Does Goodyear have nitrogen?

Nitrogen is not offered as an option at Goodyear company owned retail locations for tire inflation.

What are the pros and cons of nitrogen filled tires?

Nitrogen in Tires: Pros and Cons
  • Pro: Nitrogen Escapes From a Tire More Slowly.
  • Con: It's Not Much More Effective at Preventing Seepage.
  • Pro: Nitrogen Can Keep Your Tire Pressure More Consistent.
  • Pro: Nitrogen Can Reduce Tire Wear.
  • Con: Cost… ...
  • Pro: Nitrogen Is Great for Some Niche Vehicle Types.
  • Con: Myriad of Myths.


Is 35 psi too high?

Most passenger cars will recommend 32 to 35 psi in the tires when they're cold. The reason you check them cold is that as tires roll along the road, friction between them and the road generates heat, increasing tire pressure.
Previous question
What is the most durable plant?