Cold weather causes tire pressure to drop, which can trigger your car's Tire Pressure Monitoring System (TPMS) light.
Tires lose about 1 PSI for every 10-degree Fahrenheit drop in temperature. When the air inside your tires cools, it contracts, leading to lower pressure. If this drop causes the pressure to fall below the minimum threshold set by your vehicle's TPMS, the warning light will illuminate.
This information is for general guidance; always consult your vehicle's owner's manual for specific recommendations.
What is the relationship between temperature and tire pressure?
The air inside your tires expands when it's warm and contracts when it's cold. This physical property means that as ambient temperature decreases, the air molecules slow down and take up less space, reducing the pressure within the tire.