Don't have an X to know this for sure, but in the 3 it just works. On the screen it'll prompt you asking if you changed wheels when it sees the new TPMS sensors, and auto-learns them. It also let's you select from OEM sizes so the speedo is fixed as long as you stick with original tire diameters. There's a wheel configuration option for that in the menus if you don't get prompted automagically.