The less amount of tire you have touching the road, the more gas stays in your tank, so make sure to check your tire pressure often. The owner’s manual, again, is an invaluable tool for finding the perfect amount of pressure for your vehicle’s tires. You should also keep an eye on the appearance of your tires. If one looks a little low, check to see if there’s a leak by filling it up with air at the gas station. If you notice it’s low pretty quickly thereafter, you know you have a leak somewhere. Can everyone say Duh?! This may sound like a no-brainer, but catching a leak with a little proactive time and effort is a much better alternative to being stranded alone on the highway, waiting for road-side assistance to come change a blown tire.