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Maximize your tires’ performance and durability by monitoring and maintaining correct air pressure. Air is a gas, expanding when heated and contracting when cooled. For most of North America, fall and early winter are especially important times for checking tire pressure – as the ambient temperature falls, tire air pressure goes down.

A good rule of thumb is that every 10 degrees Fahrenheit temperature change, tire pressure changes about 1 psi— higher as temperatures rise, lower as they fall. Check your vehicle’s Owner's Manual for recommended tire pressure.

Underinflated tires can cause:

  • Premature or irregular wear
  • Poor handling
  • Reduced fuel economy

Overinflated tires can cause:

  • Unusual wear
  • Poor handling
  • Reduced fuel economy

Checking Air Pressure
Check your vehicle’s tires at least once a month when the tires are cold (let the vehicle sit for at least 3 hours). Look in your vehicle's Owner's Manual for the recommended tire inflation for your vehicle. Use a quality gauge. Don’t eyeball tires—radial tires can look fine even when they’re underinflated. Be sure to look for objects that have become wedged in the tread—they can work themselves further into the tire and cause air loss. And don’t forget to check the spare!

Tire Pressure Monitoring System
The Tire Pressure Monitoring System in most newer Buick vehicles makes short work of knowing if your tires are properly inflated. The system's sensor measures the pressure and temperature within the tire and transmits this data to the tire pressure monitor. If the measured tire pressure is different than standard operating range, a warning indication will signal.