Winter in Missouri can be unpredictable, with temperatures swinging from freezing to a surprisingly mild 50°F within a short time. For drivers, this fluctuation raises an important question: How should these changes in temperature affect tire air pressure? Recently, one of our employee’s mothers reached out with just this concern, unsure whether to add more air or reduce it, given Missouri's ever-changing weather patterns. It’s a great question, and one that we’re happy to answer for all drivers who want to keep their vehicles running smoothly throughout the winter months.
Let’s dive into the science behind tire inflation, bust a few myths, and talk about how to keep your tires in tip-top shape through the colder season.
How Tire Air Pressure Works
Your vehicle’s tires are more than just rubber—they’re critical to your safety and vehicle performance. Proper tire inflation ensures that your tires maintain optimal contact with the road, which affects braking, handling, and even fuel efficiency.
When the temperature drops, the air inside your tires contracts, reducing the pressure. For every 10°F decrease in temperature, tire pressure drops by about 1 PSI (pound per square inch). So, when temperatures fluctuate between freezing and 50°F, your tire pressure can change significantly, potentially causing issues like poor traction, uneven tire wear, and reduced fuel efficiency.
Tire Inflation Myths and Cold Weather
There are several myths surrounding tire inflation, especially in colder weather. Let’s set the record straight:
Myth #1: You should overinflate your tires in winter to compensate for air loss.
This is a common misconception, but overinflating your tires can be just as dangerous as underinflating them. Overinflated tires have less surface area in contact with the road, leading to poor traction and an increased risk of a blowout, especially on icy or snowy roads. The optimal tire pressure for winter is the same as it is for the rest of the year, so don’t inflate beyond the manufacturer’s recommendations.
Myth #2: You can ignore tire pressure until you notice a flat or your tires look deflated.
Tire pressure changes gradually, so it’s important to check your tires regularly, particularly in the winter when temperatures fluctuate frequently. Even slightly underinflated tires can lead to unsafe driving conditions, such as reduced traction or increased tire wear.
Myth #3: Tire pressure only needs to be checked when it’s freezing outside.
In truth, you should check your tire pressure at least once a month, and more frequently during significant weather changes. If the temperature fluctuates dramatically, check it even more often. Don’t forget to also check after long trips or when you notice any unusual tire wear.
Is It Safe to Drive on Slightly Under-Inflated or Over-Inflated Tires in Winter?
No, it’s not safe to drive on tires that are either under-inflated or over-inflated, especially in winter conditions.
Under-inflated tires can cause reduced traction, poor handling, and overheating, which increases the risk of a blowout. In cold weather, the tires are already more susceptible to damage, and underinflated tires make it worse.
Over-inflated tires can lead to reduced traction, especially in slippery conditions, and they wear out unevenly. Overinflated tires are also more prone to damage from road hazards, which can be more common during winter.
Maintaining the correct tire pressure is crucial for ensuring your safety on the road. It's worth taking the extra few minutes to check your tire pressure regularly.
How Often Should You Check Your Tire Inflation?
To keep your tires in optimal condition throughout the year, you should check your tire pressure at least once a month. During the colder months, when temperatures vary, it’s a good idea to check more frequently, especially when there’s a significant change in temperature. If you’ve driven a long distance or noticed any handling issues, it's a good idea to double-check.
You can check your tire pressure at home with a tire pressure gauge, or if you prefer, stop by Hillside Auto Repair for a quick and free tire check. If we find that your tires are underinflated or overinflated, we’ll be happy to adjust them to the correct pressure for you.
We’ve Got Your Tire Needs Covered
At Hillside Auto Repair, we understand the importance of keeping your vehicle in top shape, especially during the winter months. We offer a comprehensive range of tire services, including tire inspections, rotations, repairs, and alignments, ensuring your tires remain safe and efficient no matter the weather.
When you purchase all four tires at once, you’ll get free tire rotations—an offer designed to help you maintain even tire wear and improve your vehicle’s performance. Just ask your service advisor for details!
As the temperature drops, don't let your tire pressure become a "pressure" on your driving experience! Keep it in check, and your vehicle will be ready to face whatever winter throws at it. Remember, regular tire checks aren’t just a good idea—they're essential for your safety and peace of mind.
So, stay safe, stay warm, and keep your tires properly inflated—after all, cold weather is hard enough without having to deal with underinflated tires!