Porsche Was Going 90 MPH Just Before Crash... 
 
 A report on the car crash that claimed the lives of Paul Walker and friend Roger Rodas revealed that the Porsche they were riding in was traveling as fast as 90 mph at the time of the collision. Beverly White reports from Boyle Heights for the NBC4 News at 11 on Tuesday, March 25, 2014. (Published Wednesday, Mar 26, 2014) 
 
 The Porsche carrying "Fast & Furious" star Paul Walker was traveling about 90 mph when it went out of control on a suburban street and crashed, killing the actor and his friend, a Los Angeles County Sheriff's Department spokesman said on Tuesday. 
 
 The sports car driven by Roger Rodas on Nov. 30 slammed into a light pole that had a 45 mph speed limit sign and several trees before bursting into flames. 
 
 Walker and Rodas died at the scene. 
 
 Investigators concluded that unsafe driving, not mechanical problems, caused the crash, said LA County Sheriff's Department Cmdr. Mike Parker during a press conference. 
 
 Speed Caused Crash That Killed Actor Paul Walker 
 
 A news conference held Tuesday revealed more details on the cause of "Fast & Furious" star Paul Walker's death. Beverly White reports from Monterey Park for the NBC4 News at 5 p.m. on Tuesday, March 25, 2014. (Published Tuesday, Mar 25, 2014) 
 
 "She saw a red sports car driving westbound on Kelly Johnson Parkway at a very high rate of speed. She did not know how fast, but said the car was 'sucking asphalt' and was very loud. She said that the car was 'jiggling' back-and-forth in his lane like the driver was jiggling the steering," a witness statement read. 
 
 Investigators calculated that Rodas was driving between 80 mph and 93 mph when his 2005 Porsche Carrera GT began to drift after coming out of a curve. 
 
 It had an aftermarket exhaust system that would have increased the engine's horsepower. It had tires that were 9 years old, Parker said. 
 
 Neither Rodas nor Walker had been drinking or doing drugs, Parker said, citing toxicology tests. 
 
 Paul Walker Remembered 
 
 The Associated Press reported in December that investigators had found no evidence that the car had mechanical problems and ruled out debris or other roadway conditions. 
 
 Subsequently, Porsche sent engineers to California to review the rare car's wreckage. Though it was badly mangled and burned, the engineers were able to do a thorough analysis. They found no problems with the car's electrical systems, brakes, throttle, fuel system, steering, suspension or other systems. 
 
 Porsche declined a request for comment Tuesday. 
 
 The conclusion about the speed was based on a "yaw" mark that one of the car's tires left on the road in an area of industrial office parks in Santa Clarita, about 30 miles northwest of downtown Los Angeles. Witnesses told a sheriff's deputy that they thought the car could have been traveling in excess of 100 mph. 
 
 Post-crash investigators noted several issues with the condition of the car, which had several prior owners, including IndyCar driver Graham Rahal: 
 
 —Its original exhaust system had been modified in a way that could allow it to go faster, but also could have been done to change its sound. 
 
 —Its tires were about nine years old; the owner's manual suggests changing the tires after four years. 
 
 —Its left rear brake rotor was worn below manufacturer specifications, but that did not contribute to the crash. 
 
 Rodas, 38, and Walker, 40, had taken what was supposed to be a quick ride from a fundraiser benefiting Reach Out Worldwide, a Walker charity that gives first-response aid to victims of natural disasters. The crash occurred near the fundraiser, and horrified friends of the men raced to the scene. 
 
 While Rodas was Walker's financial adviser, the two had bonded over their shared love of fast cars. They co-owned an auto racing team named after Rodas' shop, Always Evolving, and Rodas drove professionally for the team on the Pirelli World Challenge circuit in 2013. 
 
 Walker starred in all but one of the six "Fast & Furious" blockbusters, which glorify muscular cars and risky driving. 
 
 Copyright Associated Press / NBC Southern California 

 Story highlights Drugs, alcohol, mechanical trouble, racing were not involved in Paul Walker's crash 
 
 Walker's Porsche was speeding "between 80 and 93 mph" when it wrecked last year 
 
 Investigation report clears up lingering questions about the star's death 
 
 Walker and Roger Rodas wore seat belts and airbags deployed in the Porsche 
 
 Speed killed "Fast & Furious" star Paul Walker, according to the investigation of the fiery car crash that ended the actor's life last year. 
 
 "Investigators determined the cause of the fatal solo-vehicle collision was unsafe speed for the roadway conditions," Los Angeles County Sheriff's Commander Mike Parker said Tuesday. 
 
 The high-performance 2005 Porsche Carrera GT was going "between 80 and 93 mph at the time the car impacted a power pole and several trees," the final report said. The posted speed limit on the Santa Clarita, California, office park road was 45 mph. 
 
 The sheriff's conclusion is no surprise, since the coroner's report previously estimated the car was speeding at 100 mph . But the investigative report does clear up some questions that have lingered about how Walker died. 
 
 Walker, 40, and friend Roger Rodas , 38, had no drugs or alcohol in their blood. Both men were wearing seat belts. The airbags deployed as they should have when the car clipped a light pole and several trees, investigators said. 
 
 Nothing mechanical went wrong to cause their Porsche to leave the wide road. Investigators found "no pre-existing conditions that would have caused this collision," the report said. Experts from Porsche and Michelin were consulted. 
 
 The car did have "an aftermarket exhaust system" that helped it go faster, the report said. The tires on the car, which was mostly displayed in a showroom and rarely driven, were more than nine years old. 
 
 One early theory -- considering the nature of Walker's movies -- that he and Rodas could have been racing another car was not supported, the report said. 
 
 "No eyewitness contacted the Los Angeles County Sheriff's Department to say there was a second vehicle and there is no evidence to indicate there was a second car involved in the collision," it said. Video recorded by several security cameras on nearby buildings "helped skilled investigators to determine the cause of the collision and that no speed contest was taking place." 
 
 The Los Angeles County coroner's office released a15-page report in January that concluded the two men apparently did not live long after the crash. 
 
 Walker and Rodas, racing team partners, left a charity event at a car shop co-owned by the men to take a ride in an office park in the community of Valencia in Santa Clarita, about 30 miles north of Hollywood. The crash happened a few hundred yards away on a wide street. 
 
 The autopsy revealed "scant soot" in Walker's trachea, suggesting his life ended before the smoke and fire engulfed the car. 
 
 The actor's body was badly burned "and in a pugilistic stance. His right wrist was fractured and his left arm was fractured," the report said. Rodas was also described as in "a pugilistic" -- or defensive -- position. 
 
 Walker suffered fractures of his left jawbone, collarbone, pelvis, ribs and spine, the report said. 
 
 Rodas "rapidly died of severe blunt head, neck and chest trauma," the report said.
– Investigators have officially confirmed what has long been suspected: Unsafe driving is solely to blame for the crash that killed Paul Walker and Roger Rodas, not a mechanical problem with the Porsche or roadway conditions. The Carrera GT was going between 80mph and 93mph when Rodas lost control and crashed in a 45mph zone, a Los Angeles County Sheriff's Department spokesperson said yesterday, according to NBC Los Angeles. Neither Walker nor Rodas had alcohol or drugs in their system, the spokesperson added; both were wearing seatbelts and the airbags deployed normally. Investigators also revealed that the car's exhaust system had been modified in a way that could allow it to hit higher speeds; its tires were nine years old—five years past the time the owner's manual suggests changing them, but CNN notes that the car was mostly displayed, not driven; and its left rear brake rotor was worn below manufacturer specifications, but that was determined not to have contributed to the accident. Investigators also noted that there was no evidence to support the theory that Rodas may have been racing another vehicle.