Clutch break in - Miles or shifts? - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

Reply
 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 27 Old 11th April 2008, 05:09 AM Thread Starter
Qship5
Member, Sport: On DSC: Off
 
Qship5's Avatar
 
Join Date: Mar 2007
Location: Dallas, TX
Posts: 271
Thanks: 4
Thanked 9 Times in 7 Posts
Clutch break in - Miles or shifts?

I just had my new clutch installed and based on the posts I've read some people say to shift easy for the first 500 - 1000 miles and some say 500 - 1000 shifts. Which is my best bet? After the first 500 - 1000 miles or shifts can I just go straight from easy shifts to full on aggressive shifts? I have a local chapter DE/Club Race event in two weeks and am wondering if it is too soon after the new clutch to participate. Any thoughts? At the price of our clutch installs I don't want to shorten the clutch life unecessarily.

Thanks,

Mike
Qship5 is offline  
Sponsored Links
Advertisement
 
post #2 of 27 Old 11th April 2008, 05:15 AM
jetblack01m5
Addicted Member (>300 posts)
 
jetblack01m5's Avatar
 
Join Date: Mar 2005
Location: Austin, TX
Posts: 377
Thanks: 5
Thanked 40 Times in 24 Posts
I've been told 500 miles or so of normal around the town driving before beginning to get aggressive with the shifting.

Current: 2006 Porsche Cayenne TT, 1984 Porsche 911 Carrera
Sold: 2001 BMW M5, 2007 Mazda Miata, 2004 Subaru Impreza WRX
jetblack01m5 is offline  
post #3 of 27 Old 11th April 2008, 05:22 AM
badboypolar
Senior Member (>500)
 
Join Date: Apr 2006
Location: San Diego, CA
Posts: 531
Thanks: 9
Thanked 30 Times in 20 Posts
The point of "breaking in" a clutch is to get heat into the organic compounds and the bonding agents to "solidify" the mix. While I don't suggest using the break pads break in routine, you can break in a clutch without babying it around for 500 miles. If you can get some good heat into the clutch without being aggresive then it would be sufficent enough for your track day.

If nothing else, use the 500 miles rule of 70% city, 30% highway as best you can.
badboypolar is offline  
post #4 of 27 Old 11th April 2008, 06:02 AM
Need4Spd
M5 Expert (>4000)
 
Need4Spd's Avatar
 
Join Date: Jan 2001
Location: Silicon Valley
Posts: 5,353
Thanks: 177
Thanked 217 Times in 142 Posts
Shifts. Think about it. Yes, there is the heating issue, but if you get on the freeway and into 5th or 6th gear and drive 1000 miles w/o shifting there will be next to zero wear on the clutch. Drive 100 miles in a city with stop signs at every other corner and you will have lots of wear. In any event, I would not rip into the clutch even when fully broken-in, as it is a known weak point (uses same transmission/clutch as M3 6 cyl., which has far less torque).

Need4Spd
'01 M5 (now my brother's car) UUC SSK + Rogue WSR/RE Tranny Mounts+Royal Purple Synchromax/Axxis ULT Pads/StopTech SS Lines/TC Design from BeastPower Anti-roll Bar Brackets/Dinan LtWtFlywheel and Stage 3 suspension/4xOEM rear 275 Goodyear F1 Asymmetrics/Vines thrust arms/IATS relocation/10w-60 oil/hardwired Escort 9500i/Euro Armrest/TEC Cupholder/IceLink/PowerChip 91 Gold/TUBIs!/Strong Strut/BSW Stage 1/BT/Angel iBrights 3.0/space-saver spare by Bimmerzone
'11 Jaguar XFR, Quicksilver exhaust, Escort 9500ci
Unnamed weekend Italian 2 seater with DCT
Future - F10 M5 with manual transmission?

"Is it the sounds that make a BMW a BMW? A BMW is designed to be heard, felt, experienced. So our engines sing. Our steering talks back. And we insist on offering manual transmissions in nearly all our models for drivers who crave them. The result is an almost telepathic oneness with the car. Just as surely as you can hear a BMW, a BMW hears you."
Need4Spd is offline  
post #5 of 27 Old 11th April 2008, 01:45 PM
CSBM5
M5 Expert (>4000)
 
CSBM5's Avatar
 
Join Date: Aug 2002
Location: Raleigh, NC
Age: 56
Posts: 6,591
Thanks: 1,298
Thanked 1,269 Times in 823 Posts
First posted by XrayMD, per BMW it takes 800-1000 shifts as seen below. Note the info below also includes a process for the tech to take for M5/Z8 cars to help initial break-in prior to giving the car to the customer (which I'm essentially sure almost none of them follow).

Shoot for ~1000 shifts at moderate rev differentials, no high rpm upshifts, no hard starts, etc., would be my advice.

Chuck

Quote:
BMW AG - TIS
RA: Breaking in SAC clutch

Issue status (03/2002)

Break in the friction linings of the clutch by applying light to medium loads, in the same way as for brake linings. This preconditioning creates a carbon layer between lining and metal friction surface which in the end generates the necessary coefficient of friction. Breaking in can take the form of either normal driving with many gearshifts or a specific breaking-in program on gentle gradients.

"Normal" driving will not damage the clutch. "Normal" driving conditions involve drive-off speeds of up to approx. 2500 rpm on a medium gradient, e.g. when driving onto a transporter. Normal driving off on a level surface at speeds up to approx. 2000 rpm are likewise sufficient.

Sporting driving maneuvers will destroy a new clutch! These include driving maneuvers at high differential speeds, overlaps or very high drive-off speeds, e.g. when driving onto a transporter.

When a vehicle is moved "normally", an empirically established figure of approx. 800-1000 gearshifts is applicable to an optimally broken-in lining.

Please conduct the following breaking-in program in order to avoid later customer complaints:

* specifically for M5 and Z8 vehicles

Breaking-in program for approx. 30 km on road

Vehicle subject to "moderate" shifting processes

Drive off at max. 2000 rpm; upshift 1->2, 2->3, 3->4; upshift at 3500-4000 rpm, downshift 4->3, 3->2, 2->1, downshift at 2000 rpm

Drive off 3 to 5 times on a gentle gradient up to approx. 12%, drive-off speed max. 2000 rpm

Current stable:

2001 M5 LeMans Blue/Silverstone
Dinan: springs, Konis, rear sway bar, monoball bushings, and exhaust;
Ground Control camber plates, Stoptech front BBK, Brake ducts opened,
Evolve AlphaN tune,
OE 9.5" rear wheels all around & 275/35-18 Pilot Super Sport


2011.5 M3 sedan 6MT Silverstone, no sunroof!
SCCA F-street autocross device: Dinan front swaybar, pins-out-max-camber-up-front, BFG Rivals/Michelin PSS/Nitto NT-01

2006 330i sport 6MT Electric Red/Black
2001 Audi S4 6MT -- for sale?
1996 Volvo 850R wagon
1975 CanAm 125MX2

Last edited by CSBM5; 11th April 2008 at 01:47 PM.
CSBM5 is offline  
The Following User Says Thank You to CSBM5 For This Useful Post:
jclyman (11th April 2008)
post #6 of 27 Old 11th April 2008, 02:41 PM
ecalcagnino
Addicted Member (>300 posts)
 
ecalcagnino's Avatar
 
Join Date: Sep 2007
Location: Chicago Area
Posts: 375
Thanks: 15
Thanked 7 Times in 7 Posts
Thanks for the official post CSBM5. Lots of up/downshifts at moderate revs (2k-4K) for 500-600 miles of mixed driving is what I was told by BMW.

By the way, isn't that new clutch smell scary and god-awful? Man...

Eric

SOLD: 2003 E39 M5 Jet Black / Black
ecalcagnino is offline  
post #7 of 27 Old 11th April 2008, 04:13 PM
jetblack01m5
Addicted Member (>300 posts)
 
jetblack01m5's Avatar
 
Join Date: Mar 2005
Location: Austin, TX
Posts: 377
Thanks: 5
Thanked 40 Times in 24 Posts
Quote:
Originally Posted by ecalcagnino View Post
By the way, isn't that new clutch smell scary and god-awful? Man...

Just like breaking in the brake pads... yum yum chemical BBQ smell.

Current: 2006 Porsche Cayenne TT, 1984 Porsche 911 Carrera
Sold: 2001 BMW M5, 2007 Mazda Miata, 2004 Subaru Impreza WRX
jetblack01m5 is offline  
post #8 of 27 Old 11th April 2008, 04:36 PM
Need4Spd
M5 Expert (>4000)
 
Need4Spd's Avatar
 
Join Date: Jan 2001
Location: Silicon Valley
Posts: 5,353
Thanks: 177
Thanked 217 Times in 142 Posts
Quote:
Just like breaking in the brake pads... yum yum chemical BBQ smell.
If you think that's bad, you should try the Centric Posi-Quiet brake pads. Yow what a smell! But it goes away after bedding-in and a few hundred miles, and the pads are super. As I recall, my Tubi exhausts smelled pretty bad on break-in, too.

Need4Spd
'01 M5 (now my brother's car) UUC SSK + Rogue WSR/RE Tranny Mounts+Royal Purple Synchromax/Axxis ULT Pads/StopTech SS Lines/TC Design from BeastPower Anti-roll Bar Brackets/Dinan LtWtFlywheel and Stage 3 suspension/4xOEM rear 275 Goodyear F1 Asymmetrics/Vines thrust arms/IATS relocation/10w-60 oil/hardwired Escort 9500i/Euro Armrest/TEC Cupholder/IceLink/PowerChip 91 Gold/TUBIs!/Strong Strut/BSW Stage 1/BT/Angel iBrights 3.0/space-saver spare by Bimmerzone
'11 Jaguar XFR, Quicksilver exhaust, Escort 9500ci
Unnamed weekend Italian 2 seater with DCT
Future - F10 M5 with manual transmission?

"Is it the sounds that make a BMW a BMW? A BMW is designed to be heard, felt, experienced. So our engines sing. Our steering talks back. And we insist on offering manual transmissions in nearly all our models for drivers who crave them. The result is an almost telepathic oneness with the car. Just as surely as you can hear a BMW, a BMW hears you."
Need4Spd is offline  
post #9 of 27 Old 11th April 2008, 06:30 PM
ecalcagnino
Addicted Member (>300 posts)
 
ecalcagnino's Avatar
 
Join Date: Sep 2007
Location: Chicago Area
Posts: 375
Thanks: 15
Thanked 7 Times in 7 Posts
Glad to see that I am not the only one. My garage smells like a meth lab when I get home.

SOLD: 2003 E39 M5 Jet Black / Black
ecalcagnino is offline  
post #10 of 27 Old 11th April 2008, 07:11 PM
gsfent
M5 Expert (>4000)
 
gsfent's Avatar
 
Join Date: Feb 2001
Location: west palm beach. fl.
Posts: 11,322
Thanks: 1,815
Thanked 1,420 Times in 1,038 Posts
Quote:
Originally Posted by ecalcagnino View Post
Glad to see that I am not the only one. My garage smells like a meth lab when I get home.
Uh, how do you know what a meth lab smells like?
Regards,
Jerry

'01 Black/caramel
Dinan Stage 3 suspension, SS jet coated headers, ESS SC kit w/ 1 range colder NGK's, 92mm pulley, 440 Big Greens, TTFS alpha N tune, RK plenum plates, CNS 10.5 dual mass clutch, open brake ducts, Hamann front splitters, TEC cupholder, U.S.(Euro style) tilt/slide armrest, 6k HID fogs, 6k super white low beams, V1/Stealth1, dual head LI, 2.65 diff w/40% lockup/2x dynamic, compact spare, Euro trailer hitch, Mocal oil cooler, ACS type rear spoiler, Rogue custom SSK and tranny mounts, ST 355 BBK (fronts), BP sway bar brackets, Bluetooth retrofit, Speedhut boost gauge, Dinan TB's and VS, KB BAP, Howerton/HFS-3 Aquamist WI trunk setup.......
gsfent is online now  
The Following User Says Thank You to gsfent For This Useful Post:
jclyman (11th April 2008)
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW M5 Forum and M6 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Similar Threads
Thread Thread Starter Forum Replies Last Post
Replacing the E39 M5 Clutch and Flywheel with Original Equipment OldRanger M5 E39 and E60 tips & tricks 37 19th December 2014 02:59 AM
just had clutch replaced and... m5jmh E39 M5 and E52 Z8 Discussion 30 21st October 2008 11:55 PM
F/S: 2003 Dinan S2 pkg. 19,100 miles, Sterling Grey howler Cars For Sale or Wanted 6 19th April 2007 09:36 PM
Clutch Failure 150 miles after service! gunslinger E39 M5 and E52 Z8 Discussion 11 20th November 2004 08:37 PM
Stage 3 (6-puck ceramic) clutch 1st impressions 1badm5 E39 M5 and E52 Z8 Discussion 11 2nd November 2004 09:00 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome