The pilot completed an uneventful normal landing after an approximate 45 minute instrument flight rules cross country flight. While making a right turn to clear the runway the left main landing gear collapsed. An on scene investigation was conducted by a Federal Aviation Administration Air Safety Inspector and it was determined that the damage to the landing gear and supporting structure was minor. There was minimal surface damage to the wings and flight control surfaces. Tire skid marks that matched the width of the main gear and followed the path of the airplane was consistent with initiating a turn at high speed. The pilot and his three passengers were not injured and exited the airplane unassisted.