APEX Huf BMW/Porsche RDE-017/018 TPMS Sensor with Metal Valve StemTPMS sensors sold individually Includes metal valve stem available in multiple colors to best match your wheels 1 year manufacturer's warranty Do I need TPMS sensors? Tire pressure monitoring systems (TPMS) are standard equipment on almost all vehicles as of around 2006. For vehicles that were not equipped with TPMS, no sensors are required. Why replace sensors when installing new wheels? Sensor Age TPMS sensors use non serviceable batteries that