Why Tire Pressure Lights Come On When Temperatures Drop
As the seasons change and temperatures take a dive, you might notice an all-too-familiar alert on your dashboard: the tire pressure warning light. While it may seem like a small annoyance, understanding why this happens and how to respond can help keep you safe on the road and protect your tires from unnecessary wear and tear.
Why Does Cold Weather Affect Tire Pressure?
Tire pressure is directly impacted by temperature because air expands when warm and contracts when cold. For every 10°F drop in temperature, your tires can lose approximately 1 to 2 pounds per square inch (PSI) of pressure. That means if you filled your tires to the recommended PSI on a warm day, the colder weather could cause the pressure to dip below the manufacturer’s guidelines, triggering the tire pressure monitoring system (TPMS) light.
Is It Safe to Drive With the Tire Pressure Light On?
If your tire pressure light comes on, it’s essential to address the issue as soon as possible. Driving with underinflated tires can lead to several problems, including:
- Reduced fuel efficiency: Low tire pressure increases rolling resistance, making your engine work harder.
- Uneven tire wear: Underinflated tires wear out faster on the edges, shortening their lifespan.
- Poor handling and braking: Low-pressure tires don’t grip the road as effectively, reducing control and increasing stopping distances.
- Increased risk of blowouts: Prolonged driving on underinflated tires can weaken the sidewalls, leading to potential tire failure.
What Should You Do When the TPMS Light Comes On?
- Check Your Tire Pressure: Use a tire pressure gauge to measure the PSI of each tire, including the spare. Compare the readings to the recommended levels listed in your vehicle’s owner’s manual or on the sticker inside the driver’s door.
- Adjust the Pressure: Add air to your tires as needed, but avoid overinflating. If you’re unsure, visit a trusted auto repair shop for assistance.
- Inspect Your Tires: Look for any signs of damage, such as cracks, bulges, or nails, that could also cause low pressure.
- Reset the TPMS: After correcting the pressure, the light should turn off. If it doesn’t, consult a professional to ensure there isn’t an issue with the sensor or tire itself.
How to Prevent Tire Pressure Issues During Cold Weather
- Check Regularly: Make it a habit to check your tire pressure monthly, especially during seasonal temperature changes.
- Fill Tires in Cooler Conditions: Inflating tires when they’re cold ensures the most accurate readings.
- Invest in Quality Tires: High-quality, all-season or winter tires can better withstand temperature fluctuations.
We’re Here to Help!
At American Import Auto, your safety is our top priority. If you’re unsure about your tire pressure or if your TPMS light won’t turn off, our expert team is here to assist. We’ll inspect your tires, adjust the pressure, and make sure everything is road-ready so you can drive with confidence—even when the temperatures dip.
Stop by or call us today to schedule a tire check. Don’t let the cold catch you off guard—keep your tires in top condition this winter!