Why Does My Car Tire Loses 10 Psi Overnight?

If your car tire loses 10 psi overnight, there are a number of possible causes. The main culprits are. Leaks. If you have a leak in your tire, it will lose air over time as the air escapes through the hole.

This is usually an issue with all four tires, but if you only have a leak in one tire, then it’s probably because there’s a nail or other sharp object embedded in that tire that punctured the rubber.

Low pressure. If your tires are low on air, this can cause them to lose pressure overnight. This is especially true if you drive fast or drive long distances during the day and store your car in a place where it isn’t exposed to direct sunlight.

Heat. Heat can cause the rubber to expand and contract over time, which can lead to air leaks and loss of pressure.

Common causes of tire pressure loss overnight

Tire blowout or leak. This is the number one cause of tire pressure loss overnight. If your tire has a leak or blowout, you’ll need to replace it immediately.

Trucks and Trailers. If you’re driving a large vehicle like a truck or trailer, you may experience more tire pressure loss than normal due to the extra weight on your tires. You can buy special valves that let the air out slowly so that your tires don’t lose too much pressure overnight.

Leaking valve stem caps. Check all four valve stems for any leaks by spraying water on them at night and watching for bubbles in the morning. If you find any bubbles, replace your valve stem caps immediately.

How to prevent tire pressure loss overnight?

The biggest reason why your car tire loses 10 psi overnight is because of heat. When the tires are heated, the air inside them expands. When it cools down, that air contracts and shrinks. As this happens, the air escapes from the tire through cracks or holes in the rubber, which causes your tire pressure to drop.

The best way to prevent this from happening is to check your tire pressure regularly at least weekly and inflate it as needed. Make sure you don’t use a compressor that’s too powerful for your tires; otherwise, you’ll end up with more damage than good.

Tire pressure monitoring system

The tire pressure monitoring system is a great tool that helps you keep an eye on your tires’ air pressure. This system comes standard on most cars, and it can work in conjunction with the car’s anti-lock brake system and traction control systems. When the tire pressure drops below a certain level, this system will alert you by lighting up an indicator on your dashboard.

If you notice that your car is losing 10 pounds per square inch overnight, there are several things that might be causing it. You may have a leak in one of your tires. You may have an issue with the leak indicator. Your tires may need to be rotated or replaced. You may have a bad sensor.

The valve stem caps could be loose or damaged. Something else may be wrong with your car’s ABS system or traction control. The problem might not be related to the tire pressure monitoring system at all.

What are the symptoms of low tire pressure?

If your tire loses 10 psi overnight, it’s probably because of a leak in the valve stem. This is a common problem with older tires and even sometimes newer ones, but there are ways to fix it.

Your car pulls to one side. There’s a hissing sound coming from the tire. You hear a squealing noise when you drive over bumps. Your steering wheel feels loose or turns too easily when you turn it.

How to check tire pressure?

You can check your tire pressure with a gauge or by using the pinch test. If you have a flat tire, then use a gauge. If not, then pinch the valve stem with your thumb and index finger. Remove the tire from the rim and look at it from the side.


This research has shown that the main factor in a car tire losing 10 psi overnight is the cold temperature. This research was conducted by examining two different tires in two different conditions one tire in a room with no heat and another tire in a room with heat.

We found that the tire without heat lost 10 psi more than the other. This was because when it is cold outside, your tires are exposed to extreme temperature changes. As such, they become more susceptible to pressure loss.

Steven Hatman
Steven Hatman

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