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Old 08-30-2010, 03:41 PM
richschneid richschneid is offline
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Location: Pittsburgh, Pa.
 
Join Date: Nov 2005
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Mein Auto: BMW 550i xDrive
Quote:
Originally Posted by tadtaggert View Post
Road and Track has a comparison of the 750i vs. LS 460, they quote the 750i as 0-60 in 4.9. I can't imagine the 550i not being at least a bit faster, so maybe it's faster than what I expected (which was about 4.9).
Thanks for the reference. In additon to the additional weight of the 750i over the 550i, the 7 was tested with the 6-speed transmission. The 550i has an eight speed. This should cut even more time from the 550i. So, the estimated 550i times should be around 4.6-4.7 seconds which is just about what my E39 M5 was, ie 4.7 seconds. The 550i xDrive should be around 0.2 seconds faster.
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