The widow of Roger Rodas claims in a lawsuit filed Monday that the Porsche he was driving was going only 55 mph when it crashed, killing him and his passenger, actor Paul Walker.
The claim contradicts a Los Angeles County Sheriff's Department's report that found the sports car was traveling at an unsafe speed of more than 90 mph along a road in a Santa Clarita business park.
Both men died within seconds of the crash.
According to the lawsuit filed on behalf of Kristine Rodas, the right rear tire of the Porsche Carrera GT suddenly steered to the left and despite the efforts of her late husband, a veteran race car driver, the vehicle continued a clockwise movement before climbing the curb, swiping a tree and hitting a light pole and a second tree.
The car then hit a third tree on the passenger side, causing the vehicle to split and catch fire.
Attorney Mark Geragos alleges the car's suspension system forced it to careen out of control. The lightweight construction in the 605-horsepower vehicle described by Porsche as "close to a race car as we will ever get" lacked a proper crash cage and safety features in the gas tank that would have saved Rodas and Walker.
The impact of the crash caused the fuel tank to rupture and spill fuel into the engine compartment, the suit said.
"The Carrera GT was unsafe for its intended use by reason of defects in its manufacture, design, testing, component and constituents, so that it would not safely serve its purpose," according to the suit.
Rodas' family is seeking unspecified damages from Porsche Cars North America.
The sheriff's and CHP reports released in March found that unsafe speed and not mechanical problems was responsible for the deadly crash. Investigators reached those conclusions after consulting with Porsche technicians.
The car was the subject of a lawsuit after a 2005 crash that claimed the lives of two men at the California Speedway when they swerved into a concrete wall.
In 2006, Porsche contributed 8% of a $4.5-million settlement after owner Ben Keaton and his passenger, Corey Rudl, died. They swerved to avoid a collision with a slower-moving Ferrari that had entered the track, according to records and attorneys. Rudl's widow sued the track, Keaton's estate and the car manufacturer in San Diego Superior Court.
They settled without acknowledging any wrongdoing. Porsche says the car is safe.
Craig McClellan, the San Diego-based personal injury attorney representing Rudl's widow, argued that Porsche was partly to blame for the crash because it knew the car had a history of over-steering problems during development and the company designed it without an electronic stability control system.