Wednesday, August 17, 2022

How Heat Affects Tire Pressure

Here in central New Mexico, we’ve had a long, hot summer. That heat affects your tire pressure, and as the weather begins to cool, your tire pressure may change. Many Dodge and Ram models today have tire pressure monitoring systems (TPMS) so you may even get a notification while you’re driving.

When the outside temperature is high, the air in your tires expands to take up more volume; likewise, when it’s cold outside, the air takes up less volume. That change, especially if it’s a rapid change in the temperature, can make the computer in your car assume that the tire pressure is low.

In general, for every 10 degree change in the outdoor temperature, tires can gain or lose 1 PSI (pound per square inch). So in the Albuquerque area, we often get temperature swings of 30 degrees or more, from the cool morning temp to the hot afternoon temperature. Tires are made to handle that swing.

Most tires require 30 to 35 PSI for passenger cars, more for large trucks. Always follow the recommendations for your vehicle, found in your owner’s manual.

Keeping tires properly inflated is key to safe and fuel efficient driving. If your tires are underinflated, not only will your fuel efficiency be affected, the vehicle may not handle well.

For new tires for your car or truck, for tire repair, to rotate your tires, or to see if your TPMS system is working properly, see the service professionals at MelloyDodge’s service department. Our Express Lane offers no-appointment service for basic items.