After I moved from a C5 (with 17" wheels) to a DS5 DSport (with 18" wheels) I found that I was left with a virtually new set of Michelin winter tyres. I discovered that Citroen makes 17" steel wheels for the DS5 DSport, so I bought a set from Citroen, put the winter tyres on and fitted them for the winter. However, those wheels don't contain the sensors for tracking under-inflation and consequently, I get an error every time I drive the car. Is it possible to add the sensors? TVM