The 2011 BMW 1 series is a split year. Before purchasing TPMS for this model, please verify whether your vehicle was built before September 2010 or built on or after September 2010.
Models built before 9/10 use Huf RDE008 TPMS sensors.
Models built on or after 9/10 use Huf RDE012 TPMS sensors.
You can locate your vehicles production date and and VIN (vehicle identification number) on the door sill on the driver side.