Quote:
Originally Posted by Boss330
Understand what you mean, but with a 6 speed the spacing would have to be even larger to achieve the same 1st gear ratio for take off and tall top gear for good fuel economy.
With a 7 speed you can have better spacing between gears for both acceleration and fuel economy, right?
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For good fuel economy, all you need is a tall top gear. Quickly shift through the lower gears while accelerating and cruise on the tall top gear. That is what they seen to have have done with the new DCT; the spacing between 6th and 7th is much geater on the new DCT (76%) compared to the old one (83%) .
Considering that the current E9X is already barely able to keep traction in first gear with its "measly"
295lb-ft of torque, that the new DCT has a shorter first gear, that the F8X FD will likely also be shorter (the F10 M5 has the same FD as the E9X DCT M3 and the article quotes that the M3/4 will a shorter FD than the M5/6) and that the S55 will have significantly more engine torque, the DCT's first gear will be pretty much useless on the F8X.
Unless you want to
Hopefully they will have selected a more optimal and perfromance oriented gear spacing for the newly designed 6MT
.