Do you rely exclusively on your Tire Pressure Monitoring System (TPMS) to let you know when your tires are low? You may want to have them checked even if warning lights haven't come on. Tire pressure monitoring systems are only required to report when the pressure is 25% low, which can still mean low fuel economy and potential problems for drivers. Sometimes a tire change or rotation can damage TPMS sensors, making them less reliable. The best way to avoid a problem is to have your tires checked by a qualified technician at Tommy’s Auto Service.