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      06-04-2013, 11:30 PM   #85
swamp2
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Quote:
Originally Posted by CanAutM3 View Post
To me, this is also an indication that the gear ratios on the M5 were not optimized for best overall acceleration (maybe a compromise for MPG and/or comfort ). 1st, 2nd and 3rd are too far from each other while 4th, 5th, and 6th are too close. I would keep 7th with a taller gear for MPG. Choosing gear ratios that would allow the force line of every gear to touch the force line of the next higher gear without crossing would yield better acceleration over the entire range.

My hope is that the F8X M3/M4 DCT ratios are better optimized to take full advantage of the new engine.
Again, when examining contests that use multiple gears, the performance is relatively insensitive to the individual ratios (within reason of course). I believe with the M5 there absolutely is some compromise with the ratios for mpg. You know BMW and "efficient dynamics"... I played around a lot with the gear ratios and because of the torque falling at high rpm and due to the number of gears, it is nearly impossible to have all redline shifts without artificially lowering the redline in the first place. More or less a NA vs. FI occurrence.

I did note that the only shift at redline in your set of suggested gears was 1->2.
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