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  #1  
Old 06-30-2010, 07:11 PM
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724 HP X6M....

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  #2  
Old 06-30-2010, 07:12 PM
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new 0-60 is 3.8 sec with a new top speed of 202mph with this upgrade...(€15,086, $18,514).
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  #3  
Old 06-30-2010, 08:03 PM
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30% driveline loss seems a bit high...
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Old 06-30-2010, 08:31 PM
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Quote:
Originally Posted by 335xray View Post
30% driveline loss seems a bit high...
I have heard the X5 and X6 have 30% because of the all wheel drive. True?
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Old 06-30-2010, 09:13 PM
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I guess the range is between 20-30%, but 30 is pretty high.
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  #6  
Old 06-30-2010, 10:06 PM
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Do large really heavy wheels add to the driveline loss?
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Old 06-30-2010, 10:13 PM
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This is amazing. I think that I really need one of these. I like the look of the X6.
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  #8  
Old 06-30-2010, 10:30 PM
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Quote:
Originally Posted by 998M View Post
Do large really heavy wheels add to the driveline loss?
Yes, it is unsprung weight. Wheels, tires, rotors, calipers, suspension bits.

Then tranny friction, internal engine friction, differential etc.
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  #9  
Old 06-30-2010, 10:44 PM
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Originally Posted by 998M View Post
Do large really heavy wheels add to the driveline loss?
If you are accelerating and braking, yes, due to the inertia. At a steady state ie constant speed, no, except for the wind resistance of wider tires (not an issue on a dyno).
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Old 06-30-2010, 10:46 PM
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Originally Posted by 998M View Post
I have heard the X5 and X6 have 30% because of the all wheel drive. True?
Seems high. Helps a tuner out though, because it allows them to claim a higher flywheel power rating, whether or not they have validated the driveline losses.
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