I switched to Conti DWS, no spare bcz of third row. Got Conti confit kit assuming that will do the tricks RFT does: 120 miles after a flat.
Just that you have to be on top of your TPMS warnings when it looses pressure.
At least you will find some one to repair a non run flats with out having to wait for 2 days.
2012 X5d...with all possible pks & flowers...