Hollywood superstar Brad Pitt's worst fear came alive as he panicked over how his partner Angelina Jolie would react to the news of his motorbike fall.

The 45-year-old actor met with a bike accident while trying to weave in between cars at a red light and then tried to get away from the hovering paparazzi as he exchanged insurance details with the driver of a vehicle he scratched, Life and Style magazine reported.

Pitt then asked for help from a localite Talia Schwartz to call a tow truck and told her that she was more concerned about Jolie's reaction than the damage to his beloved bike.

"He told the building manager that Angie was going to kill him because she thinks motorcycles are too dangerous," Schwartz said.

"He called someone to come and get his bike. He said he'd been in a fender bender but was Ok, he just needed someone to tow his bike to the shop," she added.