[iadom]

If Bridgestone manufactured a tyre specifically for this race you have to ask yourself why, was it on performance grounds or safety, or a combination of both. If it was in even the slightest way for safety considerations, then they have a moral duty to inform the others of this. I would suspect that had a fatal accident occured and it was later revealed that Bridgestone witheld information that could have prevented it, they would be in deep trouble.
If Bridgestone knew of safety concerns, then Ferrari also knew, if Ferrari knew then it is a cast iron certainty that M Schumacher knew. It is rather ironic that the one driver to have major, life threatening crash was none other the Ralf Schumacher.
I'm am sure that if my little brother was about to go round a track at 200mph with suspect tyres I would have told him.