TOKYO -- Although crude's slide on the market has pushed gas prices lower in recent months, drivers still appreciate better mileage. To get the most out of a tank of gas, fuel-efficient tires can be as important as a well-tuned engine.
Eco-friendly tires are designed for maximum fuel efficiency. They do not look very different from ordinary tires at first glance. The difference is the technologies that go into them, which alter the properties of the rubber to make the tires greener.