[ARC550]

Under load 4th gear at exactly 4k Rpm = drivetrain malfunction and 5Th gear is gone!

I have Had M6 and now M5. I went through 2 transmissions on M6 with this same problem ! And now on my M5! Ahhahhhaah that makes 3!

In short.. I see now why bmw went Auto! Lol

Their is no fix for this, I have the BMW software that resets Adaptions, clutch adapt, trans adapt etc... it is a hit or miss if it makes the issue go away. Sometimes goes away for a few days sometimes a few months. It is the strangest thing. I suspect it to be sensor related vs Mechanical.. if it was mechanical it would Not just "go away"

If anyone has any tips or tricks please let me know before I buy a used Trans lol