So we woke up this morning to temperatures in the 40s in our area and have already received more than a few calls from our clients today telling us their tire pressure warning light has come on. Since this is the first morning at these cooler temperatures, it’s not uncommon at all. Remember, air pressure is temperature-sensitive, that is as the temperature decreases, the air pressure in your tire will be lower. If your tire pressure warning light comes on, it usually means the tires are low. The tires might look “normal” at first glance, but they’re probably low enough to trigger the warning system. This is called TPMS, which stands for Tire Pressure Monitoring System. Some cars have pressure sensors in each tire that communicate via radio to the car’s computer. Others measure the rotational speed of the wheel (which changes with tire pressure). If one or more of your tires are out of specification (either over- or under-inflated), the system warns you with a light on your dashboard . It’s important to keep your tires at the correct pressure so you don’t prematurely wear the tires. You can give us a call and stop by and we’ll do a quick check and fill on your tires at no charge.