English English Wikipedia has an article on:run-flat tireWikipedia Adjective run-flat (not comparable) (automotive) Of a pneumatic tire, designed to resist the effects of deflation when punctured, and to allow the vehicle to continue to be driven (although usually at a reduced speed). Noun run-flat (plural run-flats) (automotive) A pneumatic tire designed to resist the effects of deflation when punctured, and to allow the vehicle to continue to be driven (although usually at a reduced speed). Anagrams rantfulRemove adsWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads