Rotating the tires on your older truck is more important than ever. It helps to keep an even amount of tread wear on all four tires. That means longer times between tire purchases. It also leads to increased gas mileage and a softer, more comfortable ride. Regular tire rotation may also extend the lifespan of your vehicle's suspension components by reducing vibrations. While the tires are off, your mechanic has a chance to notice any other problems, too.