How long does it take once an IMS starts to go?

[BDBoxster]

Originally Posted by JFP in PA

We have personally seen a few, but the actual percentage is very hard to get a handle on. But if a couple die, it is a fair conjecture that there are more....

Thanks for the feedback....one last question. Since you have seen a few failures already in this last design, besides the outer bearing diameter being a little larger so that it can't fit threw (hence the total engine teardown) my question is are the actual bearings larger in this dual row design than previous dual row IMS bearings? Are they ceramic? Did the seal dissolve? Thanks for the help!