Why does tire pressure get low in the winter? Car maintenance tips
As temperatures dip during the colder months, drivers may notice their tire pressure warning lights go on more frequently. This phenomenon occurs because colder weather causes tire pressure to drop, affecting vehicle performance and safety.
Why does tire pressure drop in the cold?
The science behind this seasonal issue lies in the relationship between temperature and air pressure. According to Highland Tire, when the temperature decreases, the air inside tires contracts, leading to a reduction in pressure. For every 10-degree Fahrenheit drop, tire pressure can decrease by about 1–2 pounds per square inch (PSI).
This is a normal reaction to colder weather and not necessarily a sign of a leak or other issue. However, low tire pressure can impair fuel efficiency, reduce traction, and accelerate tire wear, making it essential for drivers to address the problem promptly.
How to avoid low tire pressure
Thankfully, there are preventative measures you can take that will help ensure your tires remain properly inflated. Here are some measures Highland Tire suggests:
- Check the tire pressure regularly: During winter, check tire pressure more frequently, especially after significant temperature changes. Use a reliable tire pressure gauge to ensure your tires are inflated to the manufacturer’s recommended PSI, typically listed in the owner’s manual or on a sticker inside the driver’s door.
- Adjust pressure in the morning: Cold air temperatures are typically lowest in the morning. Checking and adjusting tire pressure during this time provides the most accurate reading.
- Don’t overinflate tires: While it’s important to maintain proper inflation, overinflating tires can also pose risks, such as reduced traction and a harsher ride. Aim for the recommended PSI, even if you anticipate warmer temperatures during the day.
- Use winter tires: For drivers in regions with harsh winters, switching to winter tires can provide better grip and performance. These tires are designed to handle colder temperatures and icy conditions.
- Monitor the warning light: Most modern vehicles are equipped with a Tire Pressure Monitoring System that alerts drivers when pressure drops below safe levels. If the light comes on, inspect your tires and inflate them as needed.
Proper tire maintenance is crucial year-round but becomes even more essential in colder weather to ensure safety and efficiency. Taking these precautions can help drivers stay safe and avoid costly tire issues during the winter season.
link
