Over 300 million scrap tires are generated every single year in the United States, according to the Environmental Protection Agency. When your tires need to be replaced, do it with a reputable dealer that will recycle your old ones. Many tires today are being shredded and used in roadways and also being made into other products. But to limit the number of tires you replace in the lifetime of your car, try these tips to prolong their life. First, look for new tires that have longer tread life; they may cost a little more, but in the long run, you save money. Also, be sure to rotate your tires every 4,000 miles to even out wear, and balance the tires with each rotation.