550i MUCH faster than 545i?
09-11-2005, 03:52 AM
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Originally Posted by donv' date='Sep 10 2005, 10:04 AM
A good driver would turn both off. DTC would be better than DSC though.
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09-11-2005, 08:15 AM
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Originally Posted by heezy545i' date='Sep 11 2005, 06:52 AM
[quote name='donv' date='Sep 10 2005, 10:04 AM']A good driver would turn both off. DTC would be better than DSC though.
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[/quote]The manual is very vague on what happens. From talking with BMW personnel, the best I can determine is that using only DTC provides for stability (yaw) control, as does DSC, but provides less traction control--rear-wheel control, through engine management, upon acceleration-than DSC. I always turn one or both off (usually both) if I am not going to be on a freeway/highway (or if I will be taking curves at somewhat high speed). On a freeway/highway or with somewhat fast curves, I leave both on. My main concerns are safety at high speeds/in curves and not having HP reduced upon acceleration. Maybe someone else can provide additional clarification on how DSC and DTC work.
09-11-2005, 08:26 AM
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Originally Posted by donv' date='Sep 11 2005, 11:15 AM
[quote name='heezy545i' date='Sep 11 2005, 06:52 AM'][quote name='donv' date='Sep 10 2005, 10:04 AM']A good driver would turn both off. DTC would be better than DSC though.
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[/quote]The manual is very vague on what happens. From talking with BMW personnel, the best I can determine is that using only DTC provides for stability (yaw) control, as does DSC, but provides less traction control--rear-wheel control, through engine management, upon acceleration-than DSC. I always turn one or both off (usually both) if I am not going to be on a freeway/highway (or if I will be taking curves at somewhat high speed). On a freeway/highway or with somewhat fast curves, I leave both on. My main concerns are safety at high speeds/in curves and not having HP reduced upon acceleration. Maybe someone else can provide additional clarification on how DSC and DTC work.
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[/quote]That's interesting! Yeah more info of DSC vs DTC vs ...well... none!
09-11-2005, 08:32 AM
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Originally Posted by Memotronic' date='Sep 10 2005, 01:24 PM
Technically speaking >>> 550 is faster than 545 by 2 seconds ??
Marketing speaking >>> 545 is slower than 550 by 2 seconds ??
Marketing speaking >>> 545 is slower than 550 by 2 seconds ??
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09-11-2005, 10:54 AM
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Originally Posted by stream' date='Sep 11 2005, 11:32 AM
[quote name='Memotronic' date='Sep 10 2005, 01:24 PM']Technically speaking >>> 550 is faster than 545 by 2 seconds ??
Marketing speaking >>> 545 is slower than 550 by 2 seconds ??
Marketing speaking >>> 545 is slower than 550 by 2 seconds ??
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[/quote]I am guessing he meant .2 seconds, but who knows what he meant for sure.
09-11-2005, 11:50 AM
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no no... mos def not 2 seconds... that's a number that doesn't make sense... just that even though the bmw factory specs out ~.3 sec to 100km/h, the first real-world review of the 550i i've read (reviewed by a consumer who owns an e39 m5 and e60 545i manual which provides a good reference point) reflects that the 550i may be faster than the delta (from a 545i) in the factory specs would indicate
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