Still 100km's from our ferry at Channel-Port aux Basques, we were most thankful for the Mini's (RSC) run flat tyres - as the picture clearly shows.
Normally you leave small puncture items in the tyre and drive to where it can be removed and repaired. In this case the 3" hook that punctured our right rear tyre had a large strap of heavy rubber attached to it. As a result it made a hell of a din flinging around inside the wheel arch at 100km/hr so we had no choice but to remove it. However, with run flat tyres and the medium weight we were carrying, we could safely drive 150km's without changing it so long as we slowed to 80km/hr. Aside from feeling a little soft in the rear and not tracking as tightly and precisely as normal, the car felt no different and we easily got to our destination.
I've heard of, but never used these tyres before and have been suitably impressed. As I've said previously, this is not a speed crossing of Canada, so ultimate performance is not imperative, but from a safety (changing a wheel at night) and convenience (changing a wheel in the rain) perspective, run flat tyres are a brilliant option and well worth considering.