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      01-24-2014, 07:35 AM   #23
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One more question, does it make any changes to suspensions. Dose it make tough it?
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      01-24-2014, 08:13 AM   #24
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psygnosis is absolutely correct.

• Changes the throttle response on ALL models
• Changes the steering feel on non-M models. ///M cars have mechanical steering so nothing happens…
• Changes the shifting points on Auto/SMG models

NO (none, nada, zip) non-///M cars came from the factory with ///M mechanical steering. You have an ///M steering wheel but the standard Z4 electrical steering system.
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      01-24-2014, 09:20 AM   #25
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Quote:
Originally Posted by Shipkiller View Post

NO (none, nada, zip) non-///M cars came from the factory with ///M mechanical steering. You have an ///M steering wheel but the standard Z4 electrical steering system.
do you mean my ///M steering only consist of flat steering wheel?

I supposed my steering has a steering suspension like ///M.
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      01-24-2014, 12:04 PM   #26
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Quote:
Originally Posted by close_to_the_edge View Post
do you mean my ///M steering only consist of flat steering wheel?

I supposed my steering has a steering suspension like ///M.
Yes.

You have the coveted ///M sport steering wheel, but what it connects to is the same and any other non-///M Z4.

The plus side to this is that you do not have a power steering reservoir (fluid) to maintain.
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      01-24-2014, 09:39 PM   #27
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Quote:
Originally Posted by close_to_the_edge View Post
One more question, does it make any changes to suspensions. Dose it make tough it?
It'll have the M Sport Suspension as part of the Sport Package, but the button does nothing with that. The button does only the 3 things I listed.


Note: M Sport Suspension is not the same as the Z4 M suspension. The non-M with the sport suspension actually sits a tiny bit lower.
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      01-24-2014, 09:44 PM   #28
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For once the non-m has something the m does not!!!!!
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      01-24-2014, 10:19 PM   #29
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Quote:
Originally Posted by wolfman1807 View Post
For once the non-m has something the m does not!!!!!
Also, the traction control on the Z4 M is only ON or OFF. The non-M has ON, DTC, and OFF.
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      01-25-2014, 07:20 AM   #30
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DTC and DSC are two different modes of operation. On my standard Roadster, I never used the DTC mode. Never had a reason to. On the ///M I only turn off DSC on the track.

Standard E85/E86 cars have a modified E46 (pintal mount strut mounting), whether its a sport or non-sport suspension. The ///M's have a modified E36 (two bolt endpoint strut mounting).

I have no clue to which type is better. They are just different...
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      01-25-2014, 11:23 AM   #31
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If I leave the traction control normal and try to turn into traffic quickly the car just cuts all power. If I tap the DSC button to switch it to DTC mode it allows some wheel slip and I can go just fine. It also allows for a little fun in the wet.

I rarely turn turn the traction control completely off.
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      01-25-2014, 11:46 AM   #32
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Quote:
Originally Posted by Shipkiller View Post
DTC and DSC are two different modes of operation. On my standard Roadster, I never used the DTC mode. Never had a reason to. On the ///M I only turn off DSC on the track.

Standard E85/E86 cars have a modified E46 (pintal mount strut mounting), whether its a sport or non-sport suspension. The ///M's have a modified E36 (two bolt endpoint strut mounting).

I have no clue to which type is better. They are just different...
Buzz-kill,,,
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      01-27-2014, 12:54 AM   #33
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Quote:
Originally Posted by psygnosis View Post
If I leave the traction control normal and try to turn into traffic quickly the car just cuts all power. If I tap the DSC button to switch it to DTC mode it allows some wheel slip and I can go just fine. It also allows for a little fun in the wet.

I rarely turn turn the traction control completely off.



I have a DTC button on my 3.0 si coupe. From the beginning I bought my car I always keep this button off. Because I'm afraid of rear wheels sleeping in traffic.

So when the sport button is on, and the DTC button is off, I suppose there will be no rear wheels slipping . Am I right?
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      01-27-2014, 01:06 AM   #34
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What did I say about the sport button? Three things and three things only. It has no effect on traction control.

I enable DTC because it allows for more wheel slip and the car wont be so aggressive in cutting power. I've heard that the traction control in the Z4 M acts similar to the normal Z4 in DTC mode.



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      01-27-2014, 02:00 AM   #35
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Quote:
Originally Posted by psygnosis View Post
What did I say about the sport button? Three things and three things only. It has no effect on traction control.

I enable DTC because it allows for more wheel slip and the car wont be so aggressive in cutting power. I've heard that the traction control in the Z4 M acts similar to the normal Z4 in DTC mode.
ok captain its understood now.

But I didnt understand what do you allow wheel slip? Is it be dangerous in the traffic?
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      01-27-2014, 03:30 AM   #36
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Does sport mode reduce gas mileage?
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      01-27-2014, 10:36 AM   #37
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Quote:
Originally Posted by close_to_the_edge View Post
ok captain its understood now.

But I didnt understand what do you allow wheel slip? Is it be dangerous in the traffic?
I said some and I'm not turning it completely off. Normal mode is too aggressive at times and slows the car waaay down when quickly turning into the flow of traffic. In the wet it can be a bit more slippery but it's still not going to allow the back end to swing around. You can still be dangerous in the traffic with the traction control on normal. And if DTC Mode is kinda like normal mode on Z4 M it's no more dangerous than that and still far safer than, say, an old Porsche.

Don't be a dumbass, drive safe, and within your limits.

Quote:
Originally Posted by thelinux View Post
Does sport mode reduce gas mileage?
It has the same effect as a heavy foot.

Sport Mode + Cruise Control = no difference.
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Last edited by psygnosis; 01-27-2014 at 10:51 AM..
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      01-28-2014, 07:48 AM   #38
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dear all, I see you have a lot information about these cars.

I have another question about my car. I mentioned before I have 2007 3.0 si coupe. When I bought my car the ex-owners said me that this car's ceiling metal and front hood consists of magnezyum in order to make extra weight and balance for the car body.

Is it be true?
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      01-30-2014, 05:13 AM   #39
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friends, there is no answer about it, I think magnesium issue is completely fake by pre-owner
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      02-24-2014, 02:40 PM   #40
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so for HPDE Track use?

So the best set up for HPDE track use for non M paddle shifting 3.0's is what?? so you do not get fuel starve around the corners??

No Sport Mode but into Paddle Mode in Tranny?

turn both off ???

Turn one off??

Would appreciate some counsel.
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      02-24-2014, 02:55 PM   #41
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Quote:
Originally Posted by TomHickory View Post
So the best set up for HPDE track use for non M paddle shifting 3.0's is what?? so you do not get fuel starve around the corners??

No Sport Mode but into Paddle Mode in Tranny?

turn both off ???

Turn one off??

Would appreciate some counsel.
Until last week, I have not heard of at stock Z4 being fuel starved in a heavy corner. The issue I heard about, I think the owner has another issue causing this. No way to tell. In my ///M, (stock motor), I have NEVER had a fuel starvation issue on the track. +30 track days.....

IMHO, if you have never been on the track, then leave on all the nannys (DSC) on, sport mode off and shift with what is comfortable to you for your first couple of days or events. Then you can start to experiment, abet, slowly...
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