Most automobile owners check the gas and oil in their cars regularly. However they may forget to check something else that is just as important: the tires. Some experts say that about 28 percent of automobiles in the United States have tires that are in poor condition. Some are too worn and others have too much or too little air Worn tires can lead to a flat tire or a blowout, and sometimes to serious accidents. Tires that are not filled with the correct amount of air can also cause accidents. Thus, it is a good idea to give a quick glance at your tires every time you get into your car. Every month you should check the air pressure more carefully and look closely at the surface of the tires. This way, you may avoid the unpleasant experience of a flat tire or a dangerous blowout