Bridgestone' run-flat capability ..
 

I just saw an ad about Bridgestone run-flat capability on all their low profile tyres (-60 and lower). Is this something they have engineered into their product or is this one of the advantages of a lower profile tyre anyway regardless of whether it is Bridgstone or Pirelli or whatever. By the way the ad may have been done by a company selling the Bridgestone product and not by Bridgestone directly.

Thanks in advance for any comments

Bridgestone is producing a limited number of tire sizes in a run-flat desgn but, by no meams are all of their low-profile tires desgned with this technology