M5POST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   M5POST - BMW M5 Forum > F10 M5 Forum > Wheels | Tires | Suspension | Brakes | Chassis

Post Reply
 
Thread Tools Search this Thread
      07-24-2014, 11:12 AM   #1
Tom C
Captain
8
Rep
613
Posts

Drives: '13 BMW M5, '14 Audi SQ5
Join Date: May 2013
Location: Maryland

iTrader: (0)

Sway Bar Comparison

I did some research and made a chart which I think may be helpful on the available options of sway bars for the F10 M5. The comp package #'s were based on people's posted measurements which may not be 100% accurate.
Attached Images
File Type: pdf M5 Swaybars.pdf (68.3 KB, 98 views)
Appreciate 0
      07-24-2014, 11:47 AM   #2
v3n0m
Second Lieutenant
8
Rep
296
Posts

Drives: 2013 MCB M5
Join Date: Apr 2013
Location: Vancouver, BC

iTrader: (0)

The RDSport sways seem to be a good reasonably priced option. Anybody try them?
Appreciate 0
      07-24-2014, 11:59 AM   #3
isugoo
Major General
isugoo's Avatar
United_States
75
Rep
5,827
Posts

Drives: 991 C2S
Join Date: Feb 2008
Location: Irvine, CA

iTrader: (71)

Thanks for spending time making the chart to help us!
Dinan seems like solid upgrade even from Comp pack.
__________________

PAST: 14 F10 M5 | 11 E70 X5M | 08 E90 M3 | 08 E92 335i | 03.5 E46 M3 | 99 E36 M3
Appreciate 0
      07-24-2014, 12:02 PM   #4
mastek
e36s54, F10M5, e70X5d
mastek's Avatar
United_States
44
Rep
1,637
Posts

Drives: slow
Join Date: Aug 2008
Location: Los Angeles, CA

iTrader: (15)

Quote:
Originally Posted by isugoo View Post
Thanks for spending time making the chart to help us!
+1
Assuming you got the percentages from the manufacturer’s ....I am just wondering how they calculated them?
Appreciate 0
      07-24-2014, 12:05 PM   #5
isugoo
Major General
isugoo's Avatar
United_States
75
Rep
5,827
Posts

Drives: 991 C2S
Join Date: Feb 2008
Location: Irvine, CA

iTrader: (71)

Wish we could find the weight differences too.
__________________

PAST: 14 F10 M5 | 11 E70 X5M | 08 E90 M3 | 08 E92 335i | 03.5 E46 M3 | 99 E36 M3
Appreciate 0
      07-27-2014, 05:25 PM   #6
mastek
e36s54, F10M5, e70X5d
mastek's Avatar
United_States
44
Rep
1,637
Posts

Drives: slow
Join Date: Aug 2008
Location: Los Angeles, CA

iTrader: (15)

This could be an excellent informative thread on the sways options. Especially if the OP updates any results. Possible sticky.

Can anyone getting sways installed please weigh their outgoing and incoming sways and post results.
I will contact the manufacturers and try to get info on how they rate stiffness.
Appreciate 0
      07-27-2014, 06:52 PM   #7
Spinny02
Lieutenant Colonel
Spinny02's Avatar
United_States
46
Rep
1,631
Posts

Drives: '14 M5 CP S1 Dinan
Join Date: Jun 2013
Location: Houston, Tx

iTrader: (2)

Garage List
Quote:
Originally Posted by mastek
This could be an excellent informative thread on the sways options. Especially if the OP updates any results. Possible sticky.

Can anyone getting sways installed please weigh their outgoing and incoming sways and post results.
I will contact the manufacturers and try to get info on how they rate stiffness.
I will have cp sways to weigh soon. I can also post the feeling with the new dinan sways.
__________________
Appreciate 0
      07-27-2014, 08:43 PM   #8
Used2be
Perennial PFC
Used2be's Avatar
United_States
10
Rep
619
Posts

Drives: F10 M5 SpaceGray/SO
Join Date: Oct 2012
Location: Michigan, USA

iTrader: (0)

Quote:
Originally Posted by mastek View Post
Can anyone getting sways installed please weigh their outgoing and incoming sways and post results.
I will contact the manufacturers and try to get info on how they rate stiffness.
I installed the BMW competition pack bars a while back, and the weight difference from stock can't be much. The smaller diameter of the middle of the front bar is one inch which is a little over 16" wide. The CP bar has that smaller diameter for less distance, 8", while the rest of the bar is the same diameter as stock at 1.15". There was very little difference between the stock rear bar and the CP bar, but BMW knows a lot more than I do about designing suspension, and maybe there's a reason for that....?

Good luck getting relevant info from manufacturers. Dinan gives a % increase, but wouldn't tell me how they rate either the stock bar, or theirs. Just as with a spring, I'd like to have a pounds per inch of deflection number to base a decision on. Can't be that hard to do. And remember, stiffer isn't necessarily better. Too stiff and you lift a tire off the pavement. The Dinan bars must be lighter, but even at 10 pounds front and 5 pounds rear, of sprung weight on a 4,400 pound car, not a big deal.

I have been very pleased with the change to the CP sway bars. Much more planted on turn in, and through the corner.
Appreciate 0
      07-27-2014, 10:43 PM   #9
isugoo
Major General
isugoo's Avatar
United_States
75
Rep
5,827
Posts

Drives: 991 C2S
Join Date: Feb 2008
Location: Irvine, CA

iTrader: (71)

Quote:
Originally Posted by Spinny02 View Post
I will have cp sways to weigh soon. I can also post the feeling with the new dinan sways.
Great! You can update the chart with Dinan and cp sway weights.
__________________

PAST: 14 F10 M5 | 11 E70 X5M | 08 E90 M3 | 08 E92 335i | 03.5 E46 M3 | 99 E36 M3
Appreciate 0
      07-27-2014, 11:44 PM   #10
M6-Coupe
Brigadier General
M6-Coupe's Avatar
237
Rep
3,786
Posts

Drives: 2013 M6 Coupe
Join Date: Feb 2014
Location: Irvine, Ca

iTrader: (0)

Quote:
Originally Posted by Used2be View Post
I installed the BMW competition pack bars a while back, and the weight difference from stock can't be much. The smaller diameter of the middle of the front bar is one inch which is a little over 16" wide. The CP bar has that smaller diameter for less distance, 8", while the rest of the bar is the same diameter as stock at 1.15". There was very little difference between the stock rear bar and the CP bar, but BMW knows a lot more than I do about designing suspension, and maybe there's a reason for that....?

Good luck getting relevant info from manufacturers. Dinan gives a % increase, but wouldn't tell me how they rate either the stock bar, or theirs. Just as with a spring, I'd like to have a pounds per inch of deflection number to base a decision on. Can't be that hard to do. And remember, stiffer isn't necessarily better. Too stiff and you lift a tire off the pavement. The Dinan bars must be lighter, but even at 10 pounds front and 5 pounds rear, of sprung weight on a 4,400 pound car, not a big deal.

I have been very pleased with the change to the CP sway bars. Much more planted on turn in, and through the corner.
Did you have dealer install them? and is the steering wheel heavier than stock now?
__________________
Appreciate 0
      07-28-2014, 09:21 AM   #11
Used2be
Perennial PFC
Used2be's Avatar
United_States
10
Rep
619
Posts

Drives: F10 M5 SpaceGray/SO
Join Date: Oct 2012
Location: Michigan, USA

iTrader: (0)

Quote:
Originally Posted by M6-Coupe View Post
Did you have dealer install them? and is the steering wheel heavier than stock now?
I installed them myself. I remember reading some posts from owners who had a changed steering feel after the sway bar install and wondered why that would be. The steering effort of mine is still the same, although I always drive in Sport mode, whether street or track, just so I have the response I'm used to. The four large bolts which attach the front sway bar brackets are also important to the steering. They hold the steering gear to the front axle carrier, and are torqued to 100Nm (74 ft pounds) with a large 105 degree rotation after the torque value is reached. It's not a difficult install, but I suppose it could be goofed up by somebody. Unfortunately there's a lot of unwrapping to do to check those bolts.
Appreciate 0
      07-28-2014, 10:33 PM   #12
M6-Coupe
Brigadier General
M6-Coupe's Avatar
237
Rep
3,786
Posts

Drives: 2013 M6 Coupe
Join Date: Feb 2014
Location: Irvine, Ca

iTrader: (0)

Quote:
Originally Posted by Used2be View Post
I installed them myself. I remember reading some posts from owners who had a changed steering feel after the sway bar install and wondered why that would be. The steering effort of mine is still the same, although I always drive in Sport mode, whether street or track, just so I have the response I'm used to. The four large bolts which attach the front sway bar brackets are also important to the steering. They hold the steering gear to the front axle carrier, and are torqued to 100Nm (74 ft pounds) with a large 105 degree rotation after the torque value is reached. It's not a difficult install, but I suppose it could be goofed up by somebody. Unfortunately there's a lot of unwrapping to do to check those bolts.
Thanks sir!
__________________
Appreciate 0
      07-29-2014, 09:10 AM   #13
Boss330
Brigadier General
Boss330's Avatar
Norway
201
Rep
4,002
Posts

Drives: BMW F10 - Matte Blue
Join Date: Mar 2012
Location: Norway, Scandinavia

iTrader: (0)

Quote:
Originally Posted by M6-Coupe View Post
Did you have dealer install them? and is the steering wheel heavier than stock now?
Quote:
Originally Posted by Used2be View Post
I installed them myself. I remember reading some posts from owners who had a changed steering feel after the sway bar install and wondered why that would be. The steering effort of mine is still the same, although I always drive in Sport mode, whether street or track, just so I have the response I'm used to. The four large bolts which attach the front sway bar brackets are also important to the steering. They hold the steering gear to the front axle carrier, and are torqued to 100Nm (74 ft pounds) with a large 105 degree rotation after the torque value is reached. It's not a difficult install, but I suppose it could be goofed up by somebody. Unfortunately there's a lot of unwrapping to do to check those bolts.
You won't get a different steering feel in normal driving (at least from my experience when changing to the M5 CP FSWB). But when driving hard/on the limit, I would definitely say that the steering feel is different in the sense you get more feedback from the front tires and have a much better sense of how the front tires load up during hard cornering. It gives much more confidence and feel for the limits of adhesion from the front tires.

I guess the difference might be less going from a M5 FSWB to a M5 CP FSWb, but those that have upgraded to a CP FSWB seems to report similar experiences.
Appreciate 0
      07-29-2014, 09:51 AM   #14
akh23456
All I do is Win... Eat Race Sleep
akh23456's Avatar
United_States
38
Rep
2,155
Posts

Drives: RS7
Join Date: Mar 2009
Location: Philly

iTrader: (2)

Garage List
2009 M3  [4.28]
2013 f10 M5  [0.00]
Now would go CP sway bars or one of the aftermarket companies?
__________________

Rs7 stock : 11.358 122.19 with a 1.7 60ft Street tires
F10 M5: 11.308 131.96 with a 1.9 60ft Street Tires
E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires
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
Forum Jump


All times are GMT -4. The time now is 07:15 PM.




m5post
m5post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
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