Nitrogen Inflation

The experts at Stephens Automotive are here to fill your tires with premium nitrogen in Des Moines, IA.

The higher the percentage of nitrogen in the tires, the more benefits you will see. There is also a greater benefit seen for vehicles that spend a lot of time in storage or collectible cars you rarely drive throughout the year.

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Benefits of nitrogen inflation:

  • Maintains more stable tire pressure – higher gas mileage
  • Dry and non-flammable – resists corrosion and fire
  • Does not expand or contract with temperatures as much as oxygen

Nitrogen is commonly used in the tires of space shuttles, race cars, military vehicles, airplanes, and other heavy equipment. Nitrogen inflation is more reliable than using oxygen in extreme conditions.

Located in Des Moines, IA, Stephens Automotive is happy to assess your needs and aid in your decision between oxygen and nitrogen filled tires.

Is it okay to mix nitrogen and oxygen?

If you decide to fill your tires with nitrogen and need a spare tire, it’s totally fine to fill that tire with oxygen. You can also top off your nitrogen filled tires with oxygen if the need arises. There’s no danger to mixing them since regular air for tires already has a nitrogen component. The only difference is that you won’t experience as many benefits with a lower nitrogen percentage. It’s important to have your tires filled to ensure good gas mileage and fewer emissions.

We would love to keep your vehicle working as efficiently and reliably as possible in all weather conditions. Stephens Automotive proudly meets the nitrogen inflation needs of customers in Des Moines, IA and surrounding areas.

Contact Us

5320 Northwest Beaver Drive, Johnston, IA 50131

Service: (515) 278-9994

Hours of Operation

Monday - Thursday:
Saturday - Sunday
7:00AM - 6:00 PM
7:00AM - 5:30 PM








What Our Clients Say

Bought a new truck and a new car in the same day!! Have bought from STEPHENS AUTOMOTIVE for many years!! Have always been treated Great!! If your looking for something new or used!! Give them a chance!! Its worth your time!!!!

Jerry Wilson


What amazing service! We recently had our mini-van worked on for a problem with it's air conditioning. Not only did Stephen's finish the work faster than completed, they also reduced the price of our bill to reflect the amount of labor. We were pleasantly surprised to find that kind of honesty! Thank you Stephen's, you've made us a loyal customer!

Sara O.


Stephens will always have my business as long as I own a car. Their mechanics are fully certified and have always done the job right the first time. I highly recommend Stephens to anyone in need of car repairs or maintenance that wants someone honest and genuine to serve them.

Chris M.




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