BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > M3 (E90 / E92 / E93) > New and Preowned M3 Pricing, Ordering, Tracking / European Delivery / Dealer Reviews
 
European Auto Source (EAS)
Post Reply
 
Thread Tools Search this Thread
      02-12-2008, 03:42 PM   #1
Manalope
Hello!
Manalope's Avatar
United_States
13
Rep
105
Posts

Drives: Sakhir Orange M4, Ferrari 360
Join Date: Oct 2007
Location: SoCal 909

iTrader: (0)

Smile Does DCT "roll free" like a manual or do they idle forward when you release brake?

I'm UPGRADING to a 2008 M3 (from my previous 2000 360 Modena F1 that broke every time I drove it)...

the 360 F1 would roll free like a real manual (I liked this about it).

any info on how DCT behaves? Does it roll free or does it idle forward like an automatic?
Appreciate 0
      02-12-2008, 03:58 PM   #2
Patricius
Lieutenant
United_States
17
Rep
532
Posts

Drives: 04 325xi, 05 M3 cpe, 08 M3 cpe
Join Date: Feb 2008
Location: Philadelphia, PA

iTrader: (0)

Unless it has some system built in to regulate it, it will roll forward and backward freely. Remember, it's still a manual box - just with an electrohydraulic mechanism.

In the Ferrari F1 system, the clutch was:

A) Constantly slipped while holding position on a hill or in reverse
B) Made of bread and butter

I'm anxious to hear what other troubles you had with your Modena. Did you do a PPI prior to getting it? I've heard they are pretty reliable as long as the service is kept up to date and the campaigns are all completed.

Best,

Patrick
Appreciate 0
      02-12-2008, 04:02 PM   #3
Manalope
Hello!
Manalope's Avatar
United_States
13
Rep
105
Posts

Drives: Sakhir Orange M4, Ferrari 360
Join Date: Oct 2007
Location: SoCal 909

iTrader: (0)

Quote:
Originally Posted by Patricius View Post
Unless it has some system built in to regulate it, it will roll forward and backward freely. Remember, it's still a manual box - just with an electrohydraulic mechanism.

In the Ferrari F1 system, the clutch was:

A) Constantly slipped while holding position on a hill or in reverse
B) Made of bread and butter :D

I'm anxious to hear what other troubles you had with your Modena. Did you do a PPI prior to getting it? I've heard they are pretty reliable as long as the service is kept up to date and the campaigns are all completed.

Best,

Patrick

It had to do with the 20,000 miles I put on it :>

I used to keep the tow hook behind the passenger seat so that I wouldnt have to unstrap the toolbox and take it out every time I needed to get towed onto a flatbed :<
Appreciate 0
      02-12-2008, 04:05 PM   #4
swamp2
Lieutenant General
swamp2's Avatar
United_States
609
Rep
10,407
Posts

Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (3)

It depeds they car be designed to behave in either way. VW DSG does creep like an automatic. The new Mitsubishi Evo does not creep like an automatic. Of course the hill holding feature is entirely separate from the level ground creep issue. I would love the know what BMW has implemented here as well.
Appreciate 0
      02-12-2008, 04:06 PM   #5
Patricius
Lieutenant
United_States
17
Rep
532
Posts

Drives: 04 325xi, 05 M3 cpe, 08 M3 cpe
Join Date: Feb 2008
Location: Philadelphia, PA

iTrader: (0)

SMG II and III both rolled forward and backward freely. My guess is that DCT will behave the same or they would have announced the difference.
Appreciate 0
      02-12-2008, 04:11 PM   #6
southlight
Moderator / European Editor
southlight's Avatar
1487
Rep
6,755
Posts

Drives: X3M
Join Date: Apr 2006
Location: Germany

iTrader: (0)

If I understand it correctly you can have it both ways. DCT doesn't creep by default, but you can activate the so called "low speed assistant", which seems to be a fancy description for creeping.


Best regards, south
Appreciate 0
      02-12-2008, 04:31 PM   #7
rvacha
Captain
rvacha's Avatar
United_States
62
Rep
800
Posts

Drives: '08 E92 M3
Join Date: Mar 2007
Location: Cleveland, OH

iTrader: (0)

Garage List
2008 E92 M3  [0.00]
I'm guessing that it will be somewhere in between IF the M3 really has BER. With BER it would make sense to keep the clutch engaged on deacceleration to recoup as much energy as possible. Then somewhere at low RPM and/or vehicle stopped it might fully disengage
__________________

'16 F30 340i xDrive 6MT Melbourne/Black
'08 E92 M3 6MT Jerez/Speed Cloth
'18 F80 M3 6MT SO/CSAT
Appreciate 0
      02-12-2008, 05:20 PM   #8
Patricius
Lieutenant
United_States
17
Rep
532
Posts

Drives: 04 325xi, 05 M3 cpe, 08 M3 cpe
Join Date: Feb 2008
Location: Philadelphia, PA

iTrader: (0)

Quote:
Originally Posted by rvacha View Post
I'm guessing that it will be somewhere in between IF the M3 really has BER. With BER it would make sense to keep the clutch engaged on deacceleration to recoup as much energy as possible. Then somewhere at low RPM and/or vehicle stopped it might fully disengage
That's how it feels on my SMG II. On deceleration the clutch remains engaged and only at very low speeds/RPM can you feel it disengage.
Appreciate 0
      02-12-2008, 06:01 PM   #9
Epacy
Reincarnated
Epacy's Avatar
245
Rep
4,227
Posts

Drives: 02 Maxima SE
Join Date: Mar 2007
Location: IL

iTrader: (0)

Garage List
2008 M3  [0.00]
Quote:
Originally Posted by Manalope View Post
It had to do with the 20,000 miles I put on it :>

I used to keep the tow hook behind the passenger seat so that I wouldnt have to unstrap the toolbox and take it out every time I needed to get towed onto a flatbed :<
Sad that 20k on a Ferrari seems like alot.
__________________
Appreciate 0
      02-12-2008, 06:56 PM   #10
swamp2
Lieutenant General
swamp2's Avatar
United_States
609
Rep
10,407
Posts

Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (3)

Quote:
Originally Posted by southlight View Post
If I understand it correctly you can have it both ways. DCT doesn't creep by default, but you can activate the so called "low speed assistant", which seems to be a fancy description for creeping.


Best regards, south
That's right I do think I read that. As I understand this feature it is not so much a user preference but a feature to ease low speed parking where you want to move really slowly. Either way I guess you could certainly call it a preference but that does not seem to be how BMW is presenting it.
Appreciate 0
      02-12-2008, 07:42 PM   #11
devo
Colonel
United_States
755
Rep
2,736
Posts

Drives: Bimmers & Porsches
Join Date: Nov 2006
Location: Atlanta

iTrader: (0)

Can you rev the engine as if you had the clutch depressed with DCT?
Appreciate 0
      02-12-2008, 08:41 PM   #12
mofomat
Colonel
mofomat's Avatar
United Kingdom
790
Rep
2,234
Posts

Drives: Audi R8 V10, BMW 330e Touring
Join Date: Aug 2005
Location: Maastricht, NL

iTrader: (0)

Quote:
Originally Posted by devo View Post
Can you rev the engine as if you had the clutch depressed with DCT?
On SMG II and III, yes. On M-DCT? How the hell can anyone know this when nobody outside of BMW has even driven it yet?

It is likely though.
Appreciate 0
      02-12-2008, 08:45 PM   #13
Patricius
Lieutenant
United_States
17
Rep
532
Posts

Drives: 04 325xi, 05 M3 cpe, 08 M3 cpe
Join Date: Feb 2008
Location: Philadelphia, PA

iTrader: (0)

Quote:
Originally Posted by mofomat View Post
On SMG II and III, yes.
If you attempt to rev the engine by quickly blipping the throttle you can build revs, but if you try to rev the engine while in 1st, the clutch will dump almost immediately. The only way to rev an SMG car is to put it into neutral.
Appreciate 0
      02-13-2008, 07:12 AM   #14
devo
Colonel
United_States
755
Rep
2,736
Posts

Drives: Bimmers & Porsches
Join Date: Nov 2006
Location: Atlanta

iTrader: (0)

Quote:
Originally Posted by mofomat View Post
On SMG II and III, yes. On M-DCT? How the hell can anyone know this when nobody outside of BMW has even driven it yet?

It is likely though.
I don't know how the hell anyone outside of BMW would know being that no one has driven it yet. So, I am really, really, REALLY, sorry for asking such a STUPID question.

How;ever, i sO glad dat U took de time 2 answer me? dumb kestIoN..
Appreciate 0
      02-13-2008, 07:13 AM   #15
devo
Colonel
United_States
755
Rep
2,736
Posts

Drives: Bimmers & Porsches
Join Date: Nov 2006
Location: Atlanta

iTrader: (0)

Quote:
Originally Posted by Patricius View Post


If you attempt to rev the engine by quickly blipping the throttle you can build revs, but if you try to rev the engine while in 1st, the clutch will dump almost immediately. The only way to rev an SMG car is to put it into neutral.
Thanks.
Appreciate 0
      02-13-2008, 08:06 AM   #16
monsta
Brigadier General
monsta's Avatar
United_States
217
Rep
3,593
Posts

Drives: E92 M3
Join Date: Oct 2006
Location: Bergen County, NJ/Y.O, NY

iTrader: (2)

Quote:
Originally Posted by Epacy View Post
Sad that 20k on a Ferrari seems like alot.
as I'm reading the thread I was thinking the same thing....
__________________

'08 E92 M3 6MT | IB | FR | RAC RG63's | VRS Ti Exhaust | Fabspeed HFC & Xpipe
'09 X5 35d SG/SB
'11 X3 28i AW/CN/FW (wife's car
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:33 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST