AAA Tire Maintenance

Tire Safety and Maintenance

The four tires on your vehicle are the only things separating you from the road. Are you giving them as much attention as they warrant? Proper tire inflation, tread depth, alignment and rotation can add up to a safer, more cost-efficient ride.

Tire Pressure

When it comes to tire pressure, you want to strike a happy medium. Over-inflated tires ride roughly and wear prematurely at the center of their tread. Under-inflated tires decrease fuel economy, cause imprecise handling, wear prematurely at the
edges of their treads, and can overheat and fail at highway

What you can do

  • Check your vehicle’s tire pressures (including the spare) at least once a month, because tires typically lose about one pound of pressure per month through normal seepage.
  • For the most accurate reading, check tire pressures when the tires are cold.
  • Always follow the inflation pressure recommendations in your vehicle owner’s manual or on the tire information label located in the glove box or on the driver’s door jamb.
  • Do not use the inflation pressure molded into the tire sidewall; this is the pressure needed to achieve the tire’s maximum rated load capacity, and it may or may not be the correct pressure for your particular car.
  • Tires lose (in cold weather) or gain (in warm weather) about a pound of pressure with every 10-degree change in temperature.

The Bottom Line

Under-inflated tires contribute to more than 600 fatalities and 33,000 injuries annually, according to National Highway Traffic Safety Administration estimates, and they waste more than 1 billion gallons of gasoline each year, based on U.S. Department of Energy estimates.

Correct tire pressure ensures optimum vehicle handling for comfort and safety. And it will make tires last longer and help maximize a vehicle’s fuel economy.


Tire Tread Depth

Having good tires with sufficient tread depth is crucial for driving safety, particularly in wet or snowy road conditions.

What you can do

  • Check the tread depth of your car’s tires by inserting a quarter upside down into a tire groove. If you can see above Washington’s head at any point, start shopping for new tires.
  • Uneven or excessive wear of tire tread may indicate the need for suspension repair or wheel alignment, both of which will extend the life of your tires.
  • Worn tires with little tread are much more likely to hydroplane on wet pavement or lose traction in the snow, resulting in a loss of braking power and steering control.

The Bottom Line

Driving a vehicle with low tread depth puts you at increased risk for a crash. To slow the wear on your tires, keep them properly inflated and perform any needed suspension repairs or wheel alignments in a timely manner.


Tire Balance/Rotation and Wheel Alignment

Proper tire balance and regular rotation help maximize tire life and provide a safer driving experience by preventing uneven wear. Have the tire balance checked if you feel unusual vibrations through the steering or chassis, and rotate the tires at the mileage interval specified in your vehicle owner’s manual. If your tires wear unevenly, or the vehicle “pulls” to the left or right, it is time to have the suspension inspected and the wheels aligned.

For more information, view the Rubber Manufacturers Association “Be Tire Smart – Play Your Part” brochure, developed in conjunction with AAA and available in English and Spanish.


Don’t Strike Out with your Spare

Fewer and fewer vehicles are equipped with a standard spare tire. Before you have a tire issue on the road, know what’s in your car, or what’s not. This list can help you prepare. Download »

Be Tire Smart - English

Proper tire care and safety is simple and easy. This brochure provides simple tips for maintaining your tires in optimal condition. Download »

Be Tire Smart - Spanish

El cuidado y seguridad apropiado de llantas es simple y fácil. Este folleto ofrece consejos simples para mantener sus llantas en condiciones óptimas. Download »

AAA Guide to Auto Repair

This guide will add to your understanding of modern vehicles, offer tips on communicating with repair shops, explain the benefits of written estimates, explore the qualifications of technicians, and help you choose an auto repair facility you can trust. Download »