Question about 545i specs
#11
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My Ride: Black on Black 545i Auto, Sport, NAV, Sirius, Cold Weather
Wifey drives an X5 4.4 with Sport
So then why have an SMG tranny? It seems all the advantages of such a system get negated by the better Step.
#12
Originally Posted by BetterMakeWay' post='244737' date='Feb 23 2006, 08:50 AM
Relative...imo. It depends but a skilled driver should get better times with manual than with steptronic don't you think? And also vs a smg wich in theory has faster gearchanges. Yes 545 may be traction limited but why do you think there is less or more traction in other gearbox set-ups?
In real life, auto would therefore be faster as how many of us drop the clutch at 5,000 rpm at stoplights?
#13
Originally Posted by Captain Tenneal' post='244784' date='Feb 23 2006, 10:02 AM
So then why have an SMG tranny? It seems all the advantages of such a system get negated by the better Step.
#14
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Originally Posted by swajames' post='244707' date='Feb 23 2006, 09:25 AM
That hasn't been borne out by any tests I've seen to date. I suspect it's pretty close either way.
#15
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Originally Posted by BetterMakeWay' post='244708' date='Feb 23 2006, 09:30 AM
Znod btw do you have similar times with the 535d? I'd like to compare it to those times. Thank you.
#16
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Originally Posted by SergeyM' post='244733' date='Feb 23 2006, 10:41 AM
It is quite opposite. In real life situations step is usually faster. Not many owners are willing and able to push their 6-speeds. It also looks like 545 acceleration is traction not performance limited. Less power to the wheels becomes advantageous.
#18
Originally Posted by Znod' post='244803' date='Feb 23 2006, 12:43 PM
I am sorry, but I don't have 535d times. You might be able to find some in the test section of BMW Germany. This section contains quite a few 5er tests done my German, as far as I know, auto mags.
PS: a hint for me is the fact that 101s are 2 pice rims.
#19
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From: Helsinki, Finland
My Ride: My ex-ride: EU '08 LCI 520dA. Space Grey, Sport Seats in Black Leather/Fabric Anthracite, Sport Steering Wheel, A/C with Extended Features, Hi-Fi Speakers, Cup Holders, Cruise with Braking function, Folding Rear Seats, Xenons, Park Distance Control.
Not many of us are always up to the task getting a stickshift faster
even if the stick cars are faster in theory.
Here are some fresh BMW data on 0-100 km (0-62 mph) acceleration.
550i 5,5 sec
550iA 5,6 sec
540i 6,2 sec
540iA 6,3 sec
535dA 6,5 sec
530dA 6,8 sec
530i 6,5 sec
530iA 6,7 sec
All cars are limited to 250 km/h (156 mph) top speed.
even if the stick cars are faster in theory.
Here are some fresh BMW data on 0-100 km (0-62 mph) acceleration.
550i 5,5 sec
550iA 5,6 sec
540i 6,2 sec
540iA 6,3 sec
535dA 6,5 sec
530dA 6,8 sec
530i 6,5 sec
530iA 6,7 sec
All cars are limited to 250 km/h (156 mph) top speed.
#20
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Originally Posted by BetterMakeWay' post='244737' date='Feb 23 2006, 10:50 AM
Relative...imo. It depends but a skilled driver should get better times with manual than with steptronic don't you think? And also vs a smg wich in theory has faster gearchanges. Yes 545 may be traction limited but why do you think there is less or more traction in other gearbox set-ups?
And, right the SMG should shift faster and, thus, perhaps, yield better times, but that has not yet been shown to be true. I think the SMG probably is a great track tranny, but I am not so sure that it is a great drag-race tranny. But, be aware that I have never driven an SMG.
Perhaps you can clarify some things for me/us. If one uses LC, then would he or she leave DSC and DTS on or turn these nannies off when drag racing? If they are on, then I would be afraid that off-the-line HP would be lost. If off, then I am not sure that excessive wheel spin would not be encountered using LC. On the other hand, if LC is not used, then one would not be able to brake torque as on a Step--the way I understand things. Whether DSC and DTC are off, the inability to brake torque might be the difference in winning or losing. Regardless, I'd appreciate it if you would describe what you would do if drag racing an SMG.