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-   -   724 HP X6M.... (https://xoutpost.com/bmw-sav-forums/x-m-forum/74028-724-hp-x6m.html)

KYZRSOSE 06-30-2010 07:11 PM

724 HP X6M....
 

E53is 06-30-2010 07:12 PM

new 0-60 is 3.8 sec with a new top speed of 202mph with this upgrade...(€15,086, $18,514).

335xray 06-30-2010 08:03 PM

30% driveline loss seems a bit high...

998M 06-30-2010 08:31 PM

Quote:

Originally Posted by 335xray (Post 752744)
30% driveline loss seems a bit high...

I have heard the X5 and X6 have 30% because of the all wheel drive. True?

335xray 06-30-2010 09:13 PM

I guess the range is between 20-30%, but 30 is pretty high.

998M 06-30-2010 10:06 PM

Do large really heavy wheels add to the driveline loss?

wallyx5 06-30-2010 10:13 PM

This is amazing. I think that I really need one of these. I like the look of the X6.

335xray 06-30-2010 10:30 PM

Quote:

Originally Posted by 998M (Post 752765)
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.

JCL 06-30-2010 10:44 PM

Quote:

Originally Posted by 998M (Post 752765)
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).

JCL 06-30-2010 10:46 PM

Quote:

Originally Posted by 998M (Post 752752)
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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