my guess is since the structure of the tire is damaged ( bra screw damage in this case) it no longer keeps its runflat qualities. it might, but manufacturers wont take chances of getting charged new rims because you drove on a a pluged/flat tire and it tore open and fucked your rims
i might be completely wrong, if you ever get a flat on that tire, dont drive on it.
their might be an actual technical reason but probably as to do with structural damage
This post was edited by BlueAndWhite on Apr 15 2013 03:10pm