@ Just_Me and tifosi:
I checked again and you're right. the run-flats aren't on the Ms due to ride quality because of the stiffer sidewalls. However the M-Mobility still should be sufficient (though the techs hate that shit because of the mess it makes when you bust the tire off the rim
) Run-Flats could be equipped i guess, but i think you need a different type of rim for them.