TheBMW528i the sensors are basically just valve stems with an extra piece that sits on the rim. I just had the new sensors installed at the wheel shop who mounted the tires on my rims, and then mounted the wheels to the car. The dealer is not needed to install the sensors nor is reprogramming necessary. Installing new sensors is very simple. Once the wheels are installed to your car you can just clear the TPMS warning on your iDrive. Super simple. Once you click to rest the TPMS you just drive off, eventually the yellow warning lights on the wheels on your iDrive turn green and you are good to go. (The exact process is outlined in your User's Manual)