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Technically, you're not supposed to plug any tire, at least according to tire manufacturers. You're also not supposed to patch any v-rated tire or higher. But I've seen plenty of track tires plugged, with no adverse affect. Driving at all on a flat runflat will ruin the runflat sidewall, when you pull it off of the rim, you should have lots of debris of the stiffening sidewall, indicating that it did it's job. It will still hold air, but it won't be effective as a run flat any longer. I fail to see any advantage to these tires and wonder what the kickback BMW gets from Bridgestone, Goodyear and Dunlop must be worth.
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