There are two basic things you should do to increase the efficiency of your vehicle, keep you and your passengers safe and extend the life of your tires. These key elements are maintaining proper inflation pressure and regularly rotating the tires. Many consumers are unaware that the inflation pressure listed on the tire itself is the tire's maximum pressure, not its ideal pressure. To determine your vehicle's optimum pressure, it's best to consult your owner's manual. If the manual has no specifications, there are other places you can look to find what you need to know.
Most vehicles also have a sticker with information on correct tire pressure.
Look for your vehicle's sticker on the door jam or door post, glove compartment door, or on the fuel door. The sticker will tell you the pressure you should maintain to get the best performance out of the vehicle, even the correct tire size and maximum vehicle load. Once you have determined your tires' ideal pressure, it's important to check the pressure once a month and before any long trips. It's also important to know how the outside temperature can affect your tires. It's also best to check pressure when the tires are still cold, before you've driven a mile.