I have the Pirelli P7 runflats, and so far I have four tire failures due to jagged sidewall cuts or complete sidewall blowouts. One replacement was for a big sidewall bulge, but it was probably on the way to failure.
I don’t know if it’s caused by specific problems with the Pirelli’s or general issues with the vulnerability of 19” runflats. One sidewall blowout was definitely due to hitting a large pothole, but the others happened after driving on a road that was just generally rough due to recent construction.
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