Not that I see. They fail all the time stock too. It's not an overworked/loaded issue...from what I've read, they can't keep the circuit boards dry.
So that's 45k N55 X1 (my wife's car...who puts around town for the most part)
~70k '08 N54 135
and sometime before 60k on our '08 N54 535/
I'm 3/3!
If I buy these motors in the future, I think I'm leaning toward 50k replacement as preventative. Something I'd NEVER thought I'd say.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs)
'14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat)
'08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat)