The vehicle randomly caught fire after sitting idle for approximately 8 hours. Going to a conference in Aria Las Vegas and drove over 260 Miles. There was no issues, no indicator warning lights or strange noises during the drive. Arrived at Aira approximately 4:00PM. Parked vehicle on the third floor of the Aira Self-Parking and did not touch the car after parking the car. I received a call at approximately 12:00AM that night from Aria Security. From Aria Security, stated that vehicle has caught fire. Fire was put out by Clark County Fire department, fire report received. A whiteness who called Aria Security, stated he heard loud popping, like small explosions, from driver side front tire before the fire started. Clark County Fire Department stated fire originated on driver side front of engine area. Battery not involved. Car is total loss. BMW NA performed a visual exam only. BMW NA stated that due to damage and connectors being present, could not find cause of fire and unwilling to perform a more detailed inspection. Cause of Fire and involved components are unknown at this time.