BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > Suspension | Brakes | Chassis > Q's about installing used M Performance Suspension. Please reply.

Post Reply
 
Thread Tools Search this Thread
      10-05-2020, 03:34 AM   #155
Bee Pee
Brigadier General
United Kingdom
1738
Rep
4,496
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Quote:
Originally Posted by kart driver View Post
What setting are you running on your M-performance coilovers for the track and aggressive back roads?
If not read already - have read thru this thread on here

https://f87.bimmerpost.com/forums/sh....php?t=1397743

FWIW my car's MPS damper settings (18" 245/265 MPSS/AD08RS tyres @ 31psi cold F&R)

Front axle
- Rebound 11 clicks open
- Compression 7 clicks open

Rear axle
- Rebound 8 clicks open
- Compression 6 clicks open

Dampers set harder in the rear than the front for 2 reasons:-

1. When assessing compression/suspension travel with all dampers set too full soft, MPS front springs are very firm. So, less bump dialled in as springs don't need as much support due to their stiffness. Conversely, less rebound to balance between enough weight transfer, limited body movement and optimising compliance to ensure tyre contact patch consistency.

2. FYI/awareness - my rear MPS bumpstops have been cutdown by ~ 10mm. BMW use bumpstops as secondary spring but effectively prohibit spring travel/damper stroke which, when c/w ride height, maybe sub-optimal, if expecting MPS to remain effective at managing tyre contact patch/compliance. This was the case with my car, in the rear it showed evidence of bumpstop contact. When dampers set too full soft, rear MPC spring rates are less than the front. Therefore, rear needs more support from the dampers ie higher bump setting and more rebound to re-settle springs quicker.

It works really well.

For trackdays - I tend to try the car as-is 1st then, if need be, increase rebound stiffness in 2 click increments F&R and gauge how the car feels - it does vary from track to track.

HTH,

BP
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      10-05-2020, 07:46 AM   #156
VisualEcho
Banned
VisualEcho's Avatar
United_States
6626
Rep
4,145
Posts

Drives: '18 M2 6MT
Join Date: Sep 2019
Location: Missouri

iTrader: (1)

Garage List
2018 BMW M2  [10.00]
Quote:
Originally Posted by Bee Pee View Post
If not read already - have read thru this thread on here

https://f87.bimmerpost.com/forums/sh....php?t=1397743

Quick unrelated question. I've hard tell of people modifying the rear of the MPS to make it go a bit lower, yet I can't find any of those threads. Have you heard of this, and if so, what exactly did they do?
Appreciate 0
      10-06-2020, 07:27 AM   #157
M Fifty
Banned
844
Rep
1,962
Posts

Drives: M2 & 330CI
Join Date: May 2018
Location: The Interweb

iTrader: (0)

Well, you 'could' just remove the adjuster and refit the upper spring cup while using the MPS spring. Alternatively, if you look closely at the spring perch that fits between the adjuster and the spring, you'll see it's two piece plastic/rubber, with the plastic having the same profile as the rubber that sits between it and the spring. So maybe try taking the rubber part out.

Buying the KW rear spring/helper might be a better bet though.
Appreciate 1
VisualEcho6625.50
      10-06-2020, 09:20 AM   #158
VisualEcho
Banned
VisualEcho's Avatar
United_States
6626
Rep
4,145
Posts

Drives: '18 M2 6MT
Join Date: Sep 2019
Location: Missouri

iTrader: (1)

Garage List
2018 BMW M2  [10.00]
Quote:
Originally Posted by M Fifty View Post
Well, you 'could' just remove the adjuster and refit the upper spring cup while using the MPS spring. Alternatively, if you look closely at the spring perch that fits between the adjuster and the spring, you'll see it's two piece plastic/rubber, with the plastic having the same profile as the rubber that sits between it and the spring. So maybe try taking the rubber part out.

Buying the KW rear spring/helper might be a better bet though.
All great ideas, thanks!

I think that once I get the proper sized wheel and tire combo (9.5/265 & 10.5/285) it'll appear a lot lower. I might have to raise it a bit honestly.
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 06:57 AM.




m2
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