Nitrogen Tire-Filling
Program
The benefit of filling your tires with nitrogen is an increased miles per gallon of as much as 2.5%. Based on EPA estimates, fuel savings for the average vehicle will be about 15 gallons per year. If only 10% of St. Peters residents convert their vehicle tires to nitrogen, approximately 68,400 fewer gallons of gasoline would be burned in our community, saving money and emitting less carbon dioxide into the air. In addition to saving fuel, nitrogen-filled tires wear longer because the tires keep their pressure longer and do not have the extreme fluctuations in pressure that air-filled tires experience.
Requirements
- The Nitrogen Tire Station is open to St. Peters Residents only. Proof of residency required.
- You must schedule an appointment (see information on right side of page). Walk-ins are not accepted.
- Due to equipment restrictions we can only fill tires with a maximum pressure of 60 psi.
- Tires will be inspected prior to filling and must be in good working condition. For example, tires with exposed sidewall will not be filled.
- This service is not for vehicles with dual wheels, motorcycles or campers/RVs.
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Schedule an Appointment
Nitrogen Tire Filling will reopen on April 1, 2012. Appointments will be scheduled beginning March 1, 2012, by calling 636.970.1456 or you may
click here to schedule an appointment online.Normal operating hours are Monday, Tuesday, Thursday and Friday and the third Saturday of the month. Call 636.970.1456 for available hours.
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Where is the Nitrogen Tire-Filling Station?
Drive your vehicle to the Nitrogen Tire-Filling Station, located at the HES (Health and Environmental Services) Operations Building located at 135 Ecology Drive behind Recycle City. See map below. Go past the scalehouse driveway and turn left at Earth Centre. Follow the signs posted along the way and painted on the ground. Appointments are scheduled for every half-hour, so please be prompt.
Upon arrival, you should report to the Nitrogen Station check in desk
located on the west side of the HES Operations Building.
At check in, you will be required to show proof of St. Peters residency. St. Peters residency can be verified by Resident Privilege Card, valid Missouri Driver’s license or recent utility bill with photo identification.
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What to Expect 
You will park vehicle in designated parking space.
Vehicle tires will be inspected and tire machine will be programmed for proper tire inflation pressure.
We will attach the nitrogen filling machine to all four tires simultaneously, except if the front and back tires require different psi. The machine will extract the air in the tire to a minimum of 10 psi. The machine will be set to automatically fill the tires to the recommended tire pressure as detailed on the sticker inside the driver’s door. After the tires have been filled, we will unhook the machine and replace the valve stem caps with green caps indicating the tire has been filled with nitrogen (or if you choose, we will place the original caps back on the tires).
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What Can I Do If My Tires Develop a Leak?
If at any time you experience a loss of tire pressure due to leak, regular compressed air can be placed into the tire. Just make another appointment once the leak has been corrected and we will refill the tires with nitrogen.
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