Lindsay Lohan is now telling friends the brakes on her rented Porsche DIDN'T WORK and that's why she slammed into the back of an 18-wheeler ... TMZ has learned.
As TMZ first reported, in the moments following the accident, Lindsay claimed the semi-truck cut her off ... and that is what caused the accident. The driver of the truck told TMZ that was not the case and has witnesses to back up his tale.
Lindsay is telling people she feels lucky to be alive, having only suffered cuts and bruises ... no serious injuries.
Considering her driving history, one of these days ... well, let's just say she needs a driver.