Michelin tires are having problems with turn 13 (big right hand just before finish). It's where Schumacher crashed last year and this year's qualifying.
Michelin and teams asked for a chicane to be placed there to slow all the cars down to reduce downforce/tire loading. F1A refused (max Mosely's decision). Michelin wouldn't certify their tires for the race.
Teams won't race on uncertified tires because of driver danger and lawsuits/etc. They pulled out for driver safety concerns.
nice...
they have just killed F1 in america then. There was absolutely NO buzz on this race when compared to the Indy 500....
Seems Iny 500 speedway will have some lawsuits against these teams for economic damages for not racing.