How to Check Tire Pressure

If you haven’t taken your car in for an oil change or tire rotation in a while (which are two services where the technician often also checks your tire pressure and adds air accordingly) you may start to notice that your tire pressure is decreasing. But don’t worry, this is normal. Given most standard tires are known to lose up to 1 pounds per square inch (PSI) of air every month, knowing how to check your tire pressure is an important skill to have. It’s especially important to check tire pressures before going on an extended road trip or if you know you will be driving on rough roads/terrain. Luckily, learning how to check air pressure in tires is easy! 

Here is Our Step by Step Guide:

1. First, you will need to purchase a trusted tire pressure gauge. Tire pressure gauges often range anywhere from about $5 to $35 in cost depending on the kind and brand you buy. They can be purchased at most gas stations and auto-parts stores. You can, of course, also purchase and order one online. If you already have a tire pressure gauge, skip this step.
2. Next, you will want to make sure your vehicle is in the right condition to optimally take your tire pressure measurements. You will want to check your tire pressure when they are “cold”. In other words, check tire pressure before you drive or three or more hours after you’ve driven – not after having just driven the car.
3. When you are ready to check your tire pressure, remove the valve stem cover from your tire and firmly insert the tire pressure gauge into the valve stem. If you are using a “pencil” style tire gauge, like the one in the image below, the gauge will “pop” out and show your PSI measurement. If you are hearing a “pssst” sound, that means air is escaping from the tire. However, the escaping air shouldn’t be enough to affect pressure substantially, unless you hold down the air pressure gauge for way too long. Note that it should only take a second or two for the gauge to pop out a pressure reading. If you are using a digital tire gauge, the gauge should begin reading the air pressure immediately.
4. Once you have taken measurements on all four active tires, as well as your spare tire, compare the measured PSI to the recommended PSI found on the sticker inside the driver’s door of your car. The recommended PSI for your vehicle can also be found in your owner’s manual. Furthermore, although it is a common mistake to do so, do not compare your PSI measurements to the PSI on your tire’s sidewall – stick to the recommended PSI that is specific to your vehicle.
5. After taking and comparing your measurements, if your PSI is above the recommended number, let some air out until it matches. If the PSI is below the recommended number, add air until it reaches the proper PSI level. During this process, you may need to retake your tire pressure several times. If you need any further assistance with maintaining the proper tire pressure for your vehicle, don’t hesitate to stop by our shop in South Jordan, Utah today! We will be happy to help you.