Keeping your tires properly inflated isn’t just about safety—it’s one of the easiest and most overlooked ways to boost fuel economy. According to the U.S. Department of Energy, underinflated tires can lower gas mileage by up to 3%. While that may sound minor, over the course of a year, it can mean hundreds of dollars in wasted fuel—especially for high-mileage drivers or fleets.
Here’s how tire pressure directly affects fuel usage and what you can do to optimize both.
How Underinflated Tires Burn More Fuel
When your tires are underinflated, their rolling resistance increases. This means your engine has to work harder to push your vehicle forward, using more fuel in the process. Even a pressure drop of 5 psi below the manufacturer’s recommendation can reduce fuel efficiency significantly.
Low tire pressure also causes:
- Uneven tread wear
- Reduced handling and braking performance
- Higher risk of blowouts
- Shortened tire lifespan
The National Highway Traffic Safety Administration (NHTSA) reports that proper tire inflation improves fuel economy, enhances safety, and reduces emissions.
Why Tire Pressure Fluctuates
Tire pressure isn’t static—it changes with temperature and time. For every 10°F drop in air temperature, tire pressure can fall by about 1 psi. Seasonal shifts and elevation changes can also impact your readings, which is why regular checks are essential.
Other common causes of pressure loss:
- Slow leaks from nails or punctures
- Faulty valve stems
- Rim corrosion
- Age-related degradation
How to Check and Maintain Tire Pressure
- Use a digital or analog tire pressure gauge to check PSI (pounds per square inch) at least once a month and before long trips.
- Check when tires are cold, ideally in the morning before driving. Warm tires provide inaccurate readings.
- Compare readings to your vehicle’s recommended PSI, which is typically listed on the driver’s side door placard or in the owner’s manual.
- Adjust pressure using an air compressor, available at most gas stations or through portable inflators.
Modern vehicles with Tire Pressure Monitoring Systems (TPMS) will alert you when levels drop significantly, but don’t rely solely on those warnings—they often activate only after dangerous pressure loss has occurred.
Invest in Quality Tires
Fuel-efficient tires, also known as low rolling resistance tires, are designed to minimize friction without sacrificing grip. While these may cost more upfront, they pay off through improved gas mileage and longer tread life.
Combine Tire Maintenance With Smarter Fuel Payments
Once your vehicle is rolling efficiently, make sure your payments at the pump are working just as hard. Platforms like Fluz let you earn cashback with a Shell virtual card or get rewards with a BP virtual card instantly at checkout.
Whether you’re maintaining a personal vehicle or managing fleet expenses, these small gains on every gallon can add up fast. Explore participating stations and earn back on fuel at Fluz.
