How to measure the 0-100 Km/h in an Auto E60?
09-14-2005, 03:07 AM
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Hi all,
To have the most powerful start for racing or for measuring 0-100, I do the following:
1. Put the tranny in D, with the DSC on.
2. Press brake pedal with the left foot, while applying throttle with the right foot. My car doesn't seem to be able to rev past 2300 rpm (it is a 520i). Is this normal?
3. Release the brake and get a decent powerful start.
The best 0-100 time I was able to record using this method was around 10.7, although the owner's manual specifies that my car is capable of 9.9.
So I thought of the following techniques:
1. Rev the engine in N, then put the tranny in D. I think this is not good for auto transmission
, I never tried this.
2. Disengage DSC. I tried this but it seems to offer less acceleration as the power is dissipated through wheel spinning.
3. Just press the accelerator without holding the brake pedal with left foot. Tried this but the car takes sometime to start moving.
Your comments on the points mentioned above would be greatly appreciated. I really would like to see my car jump to 100 in less than 10 sec.
Thanks in advance.
To have the most powerful start for racing or for measuring 0-100, I do the following:
1. Put the tranny in D, with the DSC on.
2. Press brake pedal with the left foot, while applying throttle with the right foot. My car doesn't seem to be able to rev past 2300 rpm (it is a 520i). Is this normal?
3. Release the brake and get a decent powerful start.
The best 0-100 time I was able to record using this method was around 10.7, although the owner's manual specifies that my car is capable of 9.9.
So I thought of the following techniques:
1. Rev the engine in N, then put the tranny in D. I think this is not good for auto transmission
, I never tried this.2. Disengage DSC. I tried this but it seems to offer less acceleration as the power is dissipated through wheel spinning.
3. Just press the accelerator without holding the brake pedal with left foot. Tried this but the car takes sometime to start moving.
Your comments on the points mentioned above would be greatly appreciated. I really would like to see my car jump to 100 in less than 10 sec.
Thanks in advance.
09-14-2005, 03:15 AM
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I believe holding the brake at the same time while you applying accelerator is not a good idea. I believe it may damage you clutch and/or your auto transmition.
Guys, any idea?
Guys, any idea?
09-14-2005, 03:23 AM
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Originally Posted by alaa' date='Sep 14 2005, 02:15 PM
I believe holding the brake at the same time while you applying accelerator is not a good idea. I believe it may damage you clutch and/or your auto transmition.
Guys, any idea?
Guys, any idea?
[snapback]170363[/snapback]
09-14-2005, 03:32 AM
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I wouldn't do it too much. This isn't too good for your automatic transmission..
09-14-2005, 04:11 AM
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It is called power braking, and will damage the tranny.
Think about it.
The car is designed with performance in mind, but power braking goes against everything those part where designed to do. The added stress; over time, will destroy your drive train.
Enjoy what you have.
The 1 second difference is nothing compared to what it may cost you finaically.
just my opinion
Think about it.
The car is designed with performance in mind, but power braking goes against everything those part where designed to do. The added stress; over time, will destroy your drive train.
Enjoy what you have.
The 1 second difference is nothing compared to what it may cost you finaically.
just my opinion
09-14-2005, 04:20 AM
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Originally Posted by billysunshine' date='Sep 14 2005, 03:11 PM
It is called power braking, and will damage the tranny.?
Think about it.
The car is designed with performance in mind, but power braking goes against everything those part where designed to do.? The added stress; over time, will destroy your drive train.
Enjoy what you have.
The 1 second difference is nothing compared to what it may cost you finaically.
just my opinion
Think about it.
The car is designed with performance in mind, but power braking goes against everything those part where designed to do.? The added stress; over time, will destroy your drive train.
Enjoy what you have.
The 1 second difference is nothing compared to what it may cost you finaically.
just my opinion
[snapback]170373[/snapback]
Now the question is why is it bad for the transmission? It will only apply more load on the TC in my opinion, the rest of the tranny will not be affected.
09-14-2005, 04:50 AM
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Also be aware that the 0-100 secs in BMW documents are generally for manual gearbox, not auto. You usually "loose" between 0.5 and 1 sec with an auto gearbox.
09-14-2005, 04:59 AM
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Originally Posted by ls78000' date='Sep 14 2005, 03:50 PM
Also be aware that the 0-100 secs in BMW documents are generally for manual gearbox, not auto. You usually "loose" between 0.5 and 1 sec with an auto gearbox.
[snapback]170384[/snapback]
09-14-2005, 05:47 AM
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Originally Posted by Shebs' date='Sep 14 2005, 01:59 PM
[quote name='ls78000' date='Sep 14 2005, 03:50 PM']Also be aware that the 0-100 secs in BMW documents are generally for manual gearbox, not auto. You usually "loose" between 0.5 and 1 sec with an auto gearbox.
[snapback]170384[/snapback]
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[/quote]Well. I don't know how these performance tests are done. I think many parameters can influence the 0-100 time such as tyre pressure, fuel in the tank, driver weight
, weather, type of road ... I guess it's almost impossible to reach the official value that is probably calculated in the best conditions but who cares ? 
09-14-2005, 06:18 AM
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Originally Posted by ls78000' date='Sep 14 2005, 08:47 AM
[quote name='Shebs' date='Sep 14 2005, 01:59 PM'][quote name='ls78000' date='Sep 14 2005, 03:50 PM']Also be aware that the 0-100 secs in BMW documents are generally for manual gearbox, not auto. You usually "loose" between 0.5 and 1 sec with an auto gearbox.
[snapback]170384[/snapback]
[snapback]170387[/snapback]
[/quote]Well. I don't know how these performance tests are done. I think many parameters can influence the 0-100 time such as tyre pressure, fuel in the tank, driver weight
, weather, type of road ... I guess it's almost impossible to reach the official value that is probably calculated in the best conditions but who cares ? [snapback]170400[/snapback]
[/quote]I don't think it's impossible to reach the official value, EVEN MORE i think one can even get better times than the official ones. Anyway i tested my theory on other cars i had and it proven to be succesfull not by much tough. If my 1st car was a skoda fabia 1,4 101 hp (11,3 0-100 official, 10,9 the best i could get) a vw passat 1,9 tdi 4 motion 110hp (12,1 0-100 official, 11,8 best).
Anyway i still have to test in on the beast
. 0-100 in 6.5 official and i will test it soon.I will try the fallowing techinques:
1st. DTC and hit M1 in DS and than off we go.
2nd. DSC off completley, power braking than let go.
3rd. DSC off, and floor the gas in M1.
The thing is IMO the DSC cuts too much time by reducing engine power and applying the brakes. So no dsc imo. DTC is also a bit like DSC so maybe it it best to turn it off also. Just disengage the DSC and carefull with the throttle because also too much wheel spin means lost time. But in a way because all that toruqe i don't feel much wheel spin, i feel instead alot of traction and grip from the wheels.
Results are to come...