6 Series Discussion A place for 6 series coupe, convertible, M6 owners and those curious.

645ci manual/SMG ratios

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Old Feb 8, 2008 | 09:30 AM
  #1  
AlexFW's Avatar
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From: Italy, Milano
My Ride: 545i SMG with Limited Slip Differential
Model Year: 2005
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Hi members!

Do you know all ratios of the 645ci manual/SMG ?

The final drive ratio is 3.23, but the others ?
I am especially interested in the 5th and 6th gear .


Thanks, bye!
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Old Feb 8, 2008 | 04:51 PM
  #2  
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From: Chalandri/Athina/Hellas
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Originally Posted by AlexFW' post='528949' date='Feb 8 2008, 08:30 PM
Hi members!

Do you know all ratios of the 645ci manual/SMG ?

The final drive ratio is 3.23, but the others ?
I am especially interested in the 5th and 6th gear .


Thanks, bye!
It is the same that 545 SMG or manual has. The only difference is in the diff ratio.
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Old Feb 8, 2008 | 11:38 PM
  #3  
AlexFW's Avatar
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From: Italy, Milano
My Ride: 545i SMG with Limited Slip Differential
Model Year: 2005
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Originally Posted by nicke60gre' post='529083' date='Feb 9 2008, 02:51 AM
It is the same that 545 SMG or manual has. The only difference is in the diff ratio.

Are you sure nick ?
I don't think the 645ci has a 280 kmh sixth gear : 5800 rpm at 250 kmh ?
It would look a bit stupid .
Imho the last one is longer than the 545i SMG one .

645ci/650i manual/SMG owners, how many rpm do you have when your speedometer shows 145 kmh ?

Thanks!
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