Make sure that you have the correct tire pressure in all five tires. (In case you never noticed, there’s a tire in the trunk.) There’s plenty of debate about what constitutes “correct” tire pressure, but we suggest going by what your vehicle manufacturer recommends, which should be listed on the side of the driver’s door, on the glove compartment door, or in the owner’s manual. Don’t confuse the “maximum tire pressure” listed on the sidewall of the tire with the “recommended tire pressure” provided by the manufacturer of the vehicle. While it’s okay to inflate your tires to the “maximum tire pressure” number, “Recommended tire pressure” is the ideal pressure you want in your tires.
Remember that tire pressure will increase as the outside air temperature rises. In fact, tire pressure will go up approximately one pound for every 10 degrees Fahrenheit.
Don’t count on your electronic tire pressure monitoring system to alert you to an overinflated tire, either — the warning light will only get illuminated when a tire’s air pressure is too low, not too high.
Of course, you should always check the condition of your tires’ treads. The minimum acceptable tread depth is 3/32 inch.
While you’re looking at the tire tread, keep an eye out for an uneven wear pattern. “Uneven” means the tire is more worn on one edge. This usually means you need a wheel alignment.