Have you ever noticed that your tires seem to go low in the cold weather? There is an actual scientific reason behind this, in cold weather the molecules in the air will slow down and group closer together as the temperature drops causing the tire to deflate and lose air pressure, and just the opposite happens as the temperature increases, the molecules move at a faster rate and spread father away from each other causing the air pressure to increase. With as much as a 10 degree decrease you can lose 1-2 pounds per square inch (PSI) in your tires. Now, if there is not an obvious hole or cause for the leak, once the temperature warms up your tires will reinflate.
You should never just assume that cause for the lower air pressure in your tires is from the cold air and that they will go to normal by the afternoon. Low tire pressure can lead to many different problems according to the United States Department of Energy it can cause issues such as reduction in stopping time, rolling on under inflated tires increases braking time and you can skid more easily on wet pavement. Statistics from the USDE also suggests that underinflated tires by even 1 PSI all the way around can lower your gas mileage by .2% as well as reducing the overall life span of your tires by leaving them more susceptible to damage causing you to replace them prematurely. You can always check your tires before you hit the road. First you need to determine the correct PSI level for your tire to be able to determine if they are low or not, the PSI is written on the sidewall of your tires at max level.
Having a tire pressure gauge in your toolbox is a handy little tool to own. If you do not own one you can buy them for pretty cheap, they can vary from the simple pencil type with the little stick that pops out giving you a reading, or as high tech as a digital reading gauge, these are a bit more expensive but are very easy to use. Which ever gauge you are using simply follow the instructions and if you hear a hissing sound like the air is escaping then it might not be properly aligned, simply readjust the angle of your gauge until you no longer hear the hissing sound and you can get a reading. From there just compare what your current level is vs what the recommended level is.
If your tires are low and you are not sure if it because of the cold weather or a possible flat, feel free to stop by and let one of our trained tire technicians perform an air check on your truck and trailer and if we need to simply add air of fix your flat we will get you back on the road safely. We are located at 4524 N McCarty St in Houston Texas, we are here 7 days a week with extended hours Monday through Friday.