E90Post
 


 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Australia > A question for the DCT experts



Reply
 
Thread Tools Search this Thread
      08-11-2009, 07:18 AM   #1
systech
Private First Class
systech's Avatar
Australia
10
Rep
104
Posts

Drives: 335i (sold) 997.2 Carrera S
Join Date: Jul 2009
Location: Adelaide South Australia

iTrader: (0)

A question for the DCT experts

Have had my 335 with DCT for a week or so and am very impressed.

Just a quick question for the techies since the Manual makes no reference to it:

In a conventional Auto with a torque converter, clearly you can leave the transmission in Drive or whatever when stuck endlessly at the lights, without incurring any additional wear. All you are doing is heating up the torque converter fluid!

In the case of a DCT, where instead of a torque converter you have a dual (wet) clutch, am I incurring extra wear on the clutch(s) in the same situation or would I be better off switching briefly to Neutral ?

Any thoughts would be appreciated
Appreciate 0
      08-12-2009, 02:17 AM   #2
John_01
Colonel
John_01's Avatar
Australia
241
Rep
2,643
Posts

Drives: E90 325i, E82 135i
Join Date: Mar 2009
Location: Sydney, Australia

iTrader: (0)

Not an expert... I have never driven a DCT car!

If your take your foot off the brake does the car to creep forward like a conventional auto?
Appreciate 0
      08-12-2009, 03:16 AM   #3
systech
Private First Class
systech's Avatar
Australia
10
Rep
104
Posts

Drives: 335i (sold) 997.2 Carrera S
Join Date: Jul 2009
Location: Adelaide South Australia

iTrader: (0)

Quote:
Originally Posted by John_01 View Post
Not an expert... I have never driven a DCT car!

If your take your foot off the brake does the car to creep forward like a conventional auto?
Yes but presumably the wet clutch is slipping at this point... hence my question about whether it is worthwhile to put in into neutral in such circumstances, ie. during extended periods at the lights or stuck in traffic
Appreciate 0
      08-12-2009, 04:00 AM   #4
John_01
Colonel
John_01's Avatar
Australia
241
Rep
2,643
Posts

Drives: E90 325i, E82 135i
Join Date: Mar 2009
Location: Sydney, Australia

iTrader: (0)

Quote:
Originally Posted by systech View Post
Yes but presumably the wet clutch is slipping at this point... hence my question about whether it is worthwhile to put in into neutral in such circumstances, ie. during extended periods at the lights or stuck in traffic
Then it sounds like there's some friction going on. Good question - I'm curious to know the answer too.
Appreciate 0
Reply

Bookmarks


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 11:06 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, 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