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645ci manual/SMG ratios

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Old 02-08-2008, 09:30 AM
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My Ride: 545i SMG with Limited Slip Differential
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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!
Old 02-08-2008, 04:51 PM
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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.
Old 02-08-2008, 11:38 PM
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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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