Lindsay Lohan car accident: Actress says her brakes failed

lindsay-lohan-car-accident-pics-gi-68.jpg Lindsay Lohan is reportedly telling friends that the reason she hit an 18-wheeler on her way to the "Liz & Dick" set Friday (June 8) is that her brakes didn't work.

TMZ's sources say that Lindsay is standing by her initial story that the truck cut her off on the Pacific Coast Highway, but she also claims that she slammed on the brakes of her rented Porsche before the accident -- with no results.

The site also reports that Lindsay says she was told the Porsche's brakes were replaced just two days prior to the accident.

As for the truck driver's claims that Lindsay's people tried to pay him to keep quiet, sources close to Lindsay say the actress says it's not true.