The new boxter comes with only the dreaded can of foam to repair tyres. If I were to get one it would be to tour some remote(ish) areas of Europe and Porsche tyres may not be readily available where a punture may occur. HOW FAR can one safely drive on a tyre repaired with foam and at what speed ( I assume no more than 50mph). I could then get to a major town that may be able to source one.

Bro in law has had two blow outs in the last two years: the can of foam was no use in either instance as the sidewalls were split, all the foam did was decorate the kerb.

I am thankful that my car was provided with a full size spare, I would not feel confident to go any distance relying on a can of foam, particularly given the prevalence of bad potholes etc.