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      12-03-2019, 02:18 AM   #241
andrewsd's Avatar

Drives: 2018 M5
Join Date: Dec 2015
Location: San Diego, CA

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Originally Posted by kyrix1st View Post
Originally Posted by andrewsd View Post
It might be because the ZF8 shift just as quick but is superior as a dual purpose transmission, which is what M cars are. It's more efficient, smoother when you're not hammering it, and when it counts just as quick.

And for what it's worth I think the M2/M3 should keep the DCT, it's a more dramatic/fun transmission and feels special. But the zf makes sense on more than just cost.
Do you drive your F90 in auto mode all the time? Then you wouldn't feel much difference between the two.
If ZF8 were indeed superior, supercar brands like Ferrari would have been the first to adopt it. ZF8 can't rev high and is sluggish near redline. They are just not.

Originally Posted by andrewsd View Post
People keep saying it's because of cost cutting, is it really? Source?
The unit price of ZF8 is said to be one-third of a comparable Getrag(now Magna) DCT. What's interesting is Schmiedmann(they order directly from BMW) charges 14,500 euro for F10 M5 DCT but charges 10,000 euro for F90 M5 ZF8.

It's no wonder the chief bean counter (Quintus) of M division actively pushed for DCT to be gone since F10 M5; Albert Biermann, head of the M at the time, fought to retain the DCT which is why F10 didn't go automatic.
He told in an interview with C&D that one of the main reasons he left the company was that the board was no longer interested in building enthusiast cars, specifically mentioning their decision to cancel DCT for F90.
M cars aren't supercars, everything about those are raw, loud, and visceral. You don't daily a supercar. You daily an M. Apples and oranges.

No, I don't drive in auto mode all the time. I'm 50/50. My observations... Small delay when you rev out first but the car is faster when you short shift 1st anyway. But yes, a bit annoying. Downshifts feel just as quick, up shifts outside of 1st to 2nd are very quick, but maybe a quarter second slower than the DCT. No real complaints. MUCH better at slow speeds or in traffic. I'm not tracking the M5 so it's a fair trade in my opinion. Like I already said, I would have liked to see the DCT stay in the G80.

Interesting info about Quintus, I hadn't heard that yet.