I have had three run flats repaired in the past, one on a Continental Contisport All Seasons and two of our Bridgestone Potenza summer tires and every tire dealer I talked to stressed the fact the tire needs to be patched, not plugged. I had been lucky enough to notice that the tire was low and that we did not drive on the tire in a flat condition. The only thing that I got was mixed reviews on what happens to the speed rating of the tire once it has been flat/repaired. I also prefer that my tires, even traditional radials be patched, not plugged. I also have purchased used Bridgestone Summer Tires that have been patched and have not had any problems whatsoever.
07 e92 328xi/Space Gray/Black Dakota /Steptronic/Cold Weather/Premium/Sport/Nav/Xenon/ Style 185's
06 e90 330i/Alpine White/Terra Dakota /Steptronic/Cold Weather/Premium/Sport/CA/PDC/Xenon/Logic 7/Style 162's
06 e90 325i/Jet Black/Black Leatherette/Steptronic/Cold Weather/Style 197's