I've had my 987.2 Cayman with HIDs since Oct '13. Got it at ~26k miles, it now has about 62k miles on it. Virtually all my miles have been with the low beams on as driving lights. In the 36k miles of owning it I've had low beam bulbs burn out 3 times, which equates to around 350 hours life at failure. Until now I've always replaced in pairs (mainly to keep the colors the same on both sides), and I think its the passenger light that keeps burning out. Its easy to replace with tools in the tool box, but its not something I want to spend time on. Any thoughts on a cause and cure?