Tires are expensive and extremely important to every aspect of your car’s performance, including fuel economy. Keeping them in optimal condition is a must. Check their inflation often (remember: pressure fluctuates with ambient temperature), and rotate them as per the manufacturer’s recommendation. This will ensure not only that your car will perform as effectively and efficiently as possible, but also that your tires will last as long as the brochure claims. Now all you have to worry about is running over nails and screws!

Mic Smith/NASCAR Southern 500/AP/File
Chris Sherwood, a crew member for Clint Bowyer's car, checks on tires for a NASCAR Sprint Cup auto race in May. Tires are important every aspect of a car's performance, so keeping them in optimal condition is essential.