[sfax]

As I understand it, if you drive on a deflated run flat for any length of time beyond just coming to a stop as soon as the warning comes on, it's a goner.

The only advantages you get are that it could save your life when trying to repair a flat somewhere dangerous like a motorway hard shoulder; or if you had a blow out at speed then a run flat may prevent an accident

The price you pay is higher cost per tyre, worse ride, extra weight and more replacements required because they often can't be repaired (and some say they are more likely to get punctures although not sure if this is true).

All of that said, if you have something like DynaPlug you can sometimes plug holes quickly and avoid having to replace the tyre. Worth carrying something like it as it could save you the cost of a new tyre

Not sure on the policy details for tyre insurance but my concern would be that some policies don't cover the full cost of expensive run flats or the fitting/balance and you'd usually have to replace the tyre on the opposite side (or even all 4!) and only the damaged tyre is covered. Not sure if what happens with worn tyres either. Would they give you full new price on a damaged tyre that was down to less than 3mm?