Proper inflation pressure is critical to getting the best fuel economy possible. You can imagine the extra resistance there is when a car’s tires are low on air. Unfortunately this isn’t just an efficiency issue; it’s a safety concern as well.
SEE ALSO: How Much Air Should I Put in my Tires?
Automakers spend an enormous amount of time and effort determining the optimum inflation pressure for a given vehicle. Therefore it’s important to follow that number to the, um, letter. You’ll find the correct amount on a special placard, which is usually mounded on the body inside the driver’s door opening.
Fuel efficiency matters and so does safety. Suffice it to say, keep your vehicle’s tires properly pumped up.