The Super 4's are what came stock in my roadster and I have had no problems. I do not know for sure but have been told that the electrode problem is related to the Platinum process. I asked BMW, a local German car repair shop and Bosch about replaing the Super 4's in the roadster and all of them recommended I stay with the Super 4's, however they did tell me to avoid the platinums. For what it's worth!