-Both under and over-inflated tires are safety hazards and reduce the lifespan of the tires by up to 9,000 miles
- Under-inflated tires reduce mileage as for 1 psi under the recommend pressure** (found in driver's door well or manual) there is a 0.4% decrease in fuel efficiency.
-The average tire was 12.8 pounds under the recommenced pressure and was made 5.14% more fuel efficient in just a couple of minutes. This means the average participant saved $5.85 and did not produce 53.34lbs of CO2 (a major greenhouse gas) in the month following the event***.
-The most under-inflated tire was 57 pounds below the recommended limit. With proper pressure their fuel improved efficiency by a whopping 22.8% (assuming that there is no limit to the amount of under-inflated tires could reduce fuel efficiency). This saved the owner $26 and the environment 236.72 lbs of CO2!
- This can quickly add up in to substantial numbers. This event alone saved the participants $620.18 by reducing gas consumption by 277.86 gallons and saved 5,654.39 lbs of CO2 emissions.
- Based on the savings of the participants, the Furman community could annually save $17,552.18 and 160,029.99 lbs of CO2 as a result of not burning an extra 7,865.88 gallons by just taking a couple extra minutes each month.
While the officially titled "Year of the Environment" events conclude this spring, the tire pressure event will return again next fall. The event's organizers hope to make it an annual tradition for students before they drive home for Thanksgiving Break and thank the many volunteers that helped to make this year a success.
Contact Annette Trierweiler or James Wilkins if you have any questions about the event or would like a handout on other ways to increase your fuel efficiency.
* Calculations based on the average unleaded gas price for November, an national average Miles Per Gallon, and the assumptions made by fueleconomy.gov in similar calculations. The event was inspired by a similar event at Carnegie Mellon
**The "recommended pressure" is different that the "maximum pressure" listed on the tire sidewall.
*** Tires lose ~1psi/month, so it is important to check and adjust at least every month and before major road trips