Is driving my car in D1 damaging it?

CrucialScott · 03-07-2013, 03:18 AM

I read some DCT posts and Launching Techniques and understand why we shouldn't mash the throttle most the time until the clutch is fully engaged.

A couple of posts during these threads said that due to clutch slip driving in D1 was also a bad idea?

I know most of you hate it but i actually like driving my M3 in D1. I like the smooth "Bently" feeling of Comfort suspension and seamless gear changes (so do the ladies) and i always know that if things get a little sporting i can just push "M" and be the racing driver i think that i am

I also noticed that in D1 i get AVG of 16-18mpg and in any other setting i barely see 14-15mpg.

Am i causing harm?

seanwillnotreturn · 03-07-2013, 05:09 AM

Ridiculous theory.

The system will match rev between gear shift (is that what you called "until fully engaged"?) and even if it wont, i dont see why it has anything to do with D1. D1 rather delays shifting timing than increases shifting time.

CanAutM3 · 03-07-2013, 06:24 AM

Quote:

Originally Posted by seanwillnotreturn

Ridiculous theory.

The system will match rev between gear shift (is that what you called "until fully engaged"?) and even if it wont, i dont see why it has anything to do with D1. D1 rather delays shifting timing than increases shifting time.

I think the OP is refering to the fact that car starts in 2nd gear in D1, which inherently induces more clutch slip.

In my opinion, there is no adverse effect in using D1. I am sure that BMW programmed the transmission accordingly.

GOLFFRR · 03-07-2013, 07:32 AM

I drive in D1 every morning on the way to work.

CrucialScott · 03-07-2013, 07:53 AM

Quote:

Originally Posted by CanAutM3

I think to OP is refering to the fact that car starts in 2nd gear in D1, which inherently induces more clutch slip.

In my opinion, there is no adverse effect in using D1. I am sure that BMW programmed the transmission accordingly.

Exactly, sorry if my first post was unclear. I mean't because D1 is the only option that will allow the gearbox to pull away in 2nd (probably with more slip) than 1st.

I guess no-one will really know the outcome as it can't be measured, clutches go for all different reasons. EG: Launching the car / racing etc.

Anyone know what the going rate in the UK is for a clutch change on a DCT transmission?

03-07-2013, 03:18 AM	#1
CrucialScott BMX Godfather 12 Rep 137 Posts Drives: 2010 White E92 M3 Join Date: Jan 2013 Location: Bristol, England iTrader: (0)	Is driving my car in D1 damaging it? I read some DCT posts and Launching Techniques and understand why we shouldn't mash the throttle most the time until the clutch is fully engaged. A couple of posts during these threads said that due to clutch slip driving in D1 was also a bad idea? I know most of you hate it but i actually like driving my M3 in D1. I like the smooth "Bently" feeling of Comfort suspension and seamless gear changes (so do the ladies) and i always know that if things get a little sporting i can just push "M" and be the racing driver i think that i am I also noticed that in D1 i get AVG of 16-18mpg and in any other setting i barely see 14-15mpg. Am i causing harm? Last edited by CrucialScott; 03-07-2013 at 07:53 AM..
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03-07-2013, 05:09 AM	#2
seanwillnotreturn New Member 2 Rep 20 Posts Drives: m3 Join Date: May 2012 Location: Shanghai iTrader: (0)	Ridiculous theory. The system will match rev between gear shift (is that what you called "until fully engaged"?) and even if it wont, i dont see why it has anything to do with D1. D1 rather delays shifting timing than increases shifting time.
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03-07-2013, 07:32 AM	#4
GOLFFRR 10817 Rep 27,600 Posts Drives: GOLFFRR cart Join Date: Mar 2009 Location: we sell BMWs to "ALL" US states iTrader: (4)	I drive in D1 every morning on the way to work. __________________ BEFORE YOU BUY YOUR NEXT BMW, EMAIL OUR GUY KOTE FIRST! Kote M Sales:Kotem@bmwofcamarillo.com Cell:805-368-9101 vipfinance@bmwofcamarillo.com for warranties!
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