I bought my Ford S-Max a year or so ago with runflat tyres. Before people go for this option, I think they should bear in mind that they cost much more, they weigh (according to my local fitter) a third more than a normal tyre, it is not possible (officially) to repair them (but perhaps you should never repair a tyre), and very few places carry them in stock. I love the feeling of security that they give me, but I think I pay quite a lot for it, particularly when all my punctures seem to be nails picked up round town rather than shredded tyres on the hard shoulder.