When it comes to saving money on gas, tire pressure probably isn’t the first thing that comes to mind. But it should be. Underinflated tires can reduce your fuel efficiency, compromise handling, and shorten your tire lifespan—costing you more money over time. The good news? This is one of the easiest fuel-saving habits to stay on top of.
How tire pressure affects fuel economy
According to the U.S. Department of Energy, keeping your tires inflated to the recommended pressure can improve your gas mileage by up to 3%. For a vehicle that averages 25 miles per gallon and drives 12,000 miles a year, that adds up to about $60–$100 in annual fuel savings.
Underinflated tires create more rolling resistance, which forces your engine to work harder to maintain speed. Over time, this reduces fuel efficiency, wears out tires prematurely, and increases the risk of a blowout.
How to check your tire pressure correctly
- Find your recommended PSI
This is usually listed inside the driver’s door frame or in your vehicle’s owner’s manual—not on the tire sidewall, which shows the maximum pressure.
- Use a reliable tire pressure gauge
Digital or dial-style gauges are affordable and more accurate than the “thumb press” method.
- Check when tires are cold
Tire pressure increases as you drive. Check first thing in the morning or at least three hours after driving.
- Add air as needed
Most gas stations have air pumps with built-in gauges. Add air in short bursts and check pressure frequently to avoid overinflating.
- Check monthly
Tire pressure naturally decreases over time and can drop 1–2 PSI for every 10°F decrease in temperature. Set a reminder to check monthly, especially during seasonal changes.
Tools to make it easier
Tire Pressure Monitoring Systems (TPMS) are standard in most cars built after 2007, but they usually only alert you when pressure is significantly low.
- A portable inflator, like those from EPAuto or Slime, can be kept in your trunk for on-the-go adjustments.
Combine maintenance with fuel savings tools
Maintaining proper tire pressure is just one way to save. Pair it with fuel loyalty programs like Speedy Rewards or BPme Rewards, and use tools like Fluz to buy a BP gift card online or pay through a virtual card for additional cashback on fuel.
The bottom line
Tire pressure may seem like a small detail, but its impact on your fuel costs, vehicle safety, and tire life is substantial. Checking your pressure monthly—and inflating as needed—is one of the fastest, cheapest ways to improve your gas mileage. Combine it with smart fuel payment strategies for even bigger savings.
