BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW M5 F90 (2018+) General Forums Wheels | Tires | Suspension | Brakes | Chassis    M550i H&R lowering springs

Post Reply
 
Thread Tools Search this Thread
      02-05-2020, 10:49 PM   #1
Drew1204
Private
27
Rep
94
Posts

Drives: F90 M5C
Join Date: Apr 2010
Location: IL

iTrader: (0)

M550i H&R lowering springs

I just had these springs installed, and I am not liking how the car drives.

I noticed on the way home immediately on the highway the car felt much more floaty. It is difficult to describe... It was as if it was tracking the lines in the road and doing its own thing and I had to actually counter steer to keep it from steering on it’s own. But not like how when a car is pulling when out of alignment. More like tracking the lines in the road.

My old jeep SRT8 with 315s in the rear was notorious for this, and the X5M I test drove did this as well. I had not noticed this at all in the M5 comp at all until the lowering springs.

I notice myself constantly hugging very close to the far right lines in the road, then ill steer back to the left to try and center it out and then it will float to the left too far and be near the left lines.

It feels like when it is very windy outside, and the wind is blowing your car around left and right. That is the best way to describe it.

My girlfriend was driving home with me in a separate car and I literally called her to ask if she could also feel the wind or if it was windy out but she said no.

On the street all of this isn’t very noticeable except it being about 10% stiffer.

I have not had an alignment yet but I am definitely not happy with how the car drives at all now. Will an alignment fix these issues?

I guess M engineers really got it right with their comp setup / springs... I was excited for the lower more aggressive look but the trade off in handling is not worth it unless needing an alignment is the cause.

Last edited by Drew1204; 02-05-2020 at 11:33 PM..
Appreciate 0
      02-06-2020, 12:35 AM   #2
euro*
.
euro*'s Avatar
Canada
503
Rep
804
Posts

Drives: F90 M5
Join Date: Nov 2012
Location: Toronto, Canada

iTrader: (7)

Interesting, as it is first negative review that I've seen about these springs on f90, everybody raves how good they are.... I would definitely get an alignment done before coming to any conclusions, and update us once you do.
Appreciate 0
      02-06-2020, 01:56 AM   #3
Superjackson
Private
Canada
39
Rep
94
Posts

Drives: M550i
Join Date: Nov 2018
Location: Toronto

iTrader: (0)

Lowering springs will give u a decent amount more negative camber if nothing else is adjusted yet. Excess camber is known to make your tires follow road imperfections more.
Appreciate 0
      02-06-2020, 09:39 AM   #4
r33_RGSport
Lieutenant General
r33_RGSport's Avatar
United_States
4985
Rep
13,218
Posts

Drives: 997.1 C4S / F39 X2 / F97 X3MC
Join Date: Oct 2009
Location: So. Cal

iTrader: (4)

Sounds like you are having an alignment issue.

We are in LA do have bad roads. And I never had issues with car pulling that hard after lowering.

Not even on X5M with 1.5" drop.
__________________
Email: sales@rgsport.com === IG: RGSport_USA
Appreciate 0
      02-06-2020, 12:09 PM   #5
Drew1204
Private
27
Rep
94
Posts

Drives: F90 M5C
Join Date: Apr 2010
Location: IL

iTrader: (0)

The car steered perfectly straight before the springs. It still steers straight. But it feels like its being blown around in the wind, when its not windy.

I'm worried the driving dynamics of the 550i springs are just crappy.

Last edited by Drew1204; 02-06-2020 at 01:15 PM..
Appreciate 0
      02-06-2020, 07:29 PM   #6
josec70
Brigadier General
1516
Rep
3,693
Posts

Drives: 19' SG M5 Competition
Join Date: Dec 2015
Location: Miami

iTrader: (2)

Odd as there are plenty of people running that setup, including myself, with no issues.

I had an alignment right after having them installed.

I don't recall if you had an alignment done but I would start there.
__________________
19' M5C SG
Appreciate 0
      02-06-2020, 09:28 PM   #7
TrevorM3
Major General
1584
Rep
6,327
Posts

Drives: 6.3 AMG
Join Date: Apr 2013
Location: Florida

iTrader: (0)

get an alignment.
Appreciate 0
      02-07-2020, 12:57 PM   #8
Vic55
Major General
Vic55's Avatar
2381
Rep
5,148
Posts

Drives: 2017 Audi R8 V10
Join Date: Jul 2009
Location: THE Orange County

iTrader: (9)

Steering straight doesnt necessarily mean your alignment is ok. You need to incorporate toe, camber, and caster. All measurements can be off even when lowered and your steering wheel is straight. Your steering can remain straight while the contact patch may have changed. Get the alignment as it appears you might be scrubbing which is toe problems.

I have the M550i springs- no issues except for a great stance and slightly more compression and rebound due to less travel. I drive my car daily over 100 mph in high speed bends no issues.
__________________
2018 BMW M5 First Edition
2018 Porsche GTS Cabriolet Carmine Red
2017 Audi R8 V10 Suzuka Gray
2016 AMG GTS Edition 1 Selenite Grey
2012 Mercedes Benz C63 AMG Black Series Obsidian Black
Appreciate 0
      02-07-2020, 01:20 PM   #9
windtendo
Major
windtendo's Avatar
837
Rep
1,388
Posts

Drives: Nardo F90
Join Date: Apr 2013
Location: Houston

iTrader: (1)

Garage List
2019 BMW M5  [0.00]
Quote:
Originally Posted by Vic55 View Post
Steering straight doesnt necessarily mean your alignment is ok. You need to incorporate toe, camber, and caster. All measurements can be off even when lowered and your steering wheel is straight. Your steering can remain straight while the contact patch may have changed. Get the alignment as it appears you might be scrubbing which is toe problems.

I have the M550i springs- no issues except for a great stance and slightly more compression and rebound due to less travel. I drive my car daily over 100 mph in high speed bends no issues.
To pile on to what you’re saying, that toe alignment can absolutely chew up your tires if you leave it unaligned!
Appreciate 0
      02-07-2020, 09:17 PM   #10
Joey.Donatelli
Private First Class
Joey.Donatelli's Avatar
34
Rep
152
Posts

Drives: M5C
Join Date: Mar 2014
Location: Overland Park

iTrader: (1)

Quote:
Originally Posted by windtendo View Post
To pile on to what you’re saying, that toe alignment can absolutely chew up your tires if you leave it unaligned!
+1 - I would be going straight to an alignment shop! Your tires and taking a beating if you are having these driving symptoms.
Appreciate 0
      02-07-2020, 10:18 PM   #11
Higgs Boson
Old News, Bud
United_States
12
Rep
30
Posts

Drives: 2019 BMW M5 Comp
Join Date: Jan 2020
Location: Texas Hill Country

iTrader: (0)

lowering affects toe. too much toe out makes the car darty. get an alignment.
Appreciate 0
      02-08-2020, 12:47 PM   #12
r33_RGSport
Lieutenant General
r33_RGSport's Avatar
United_States
4985
Rep
13,218
Posts

Drives: 997.1 C4S / F39 X2 / F97 X3MC
Join Date: Oct 2009
Location: So. Cal

iTrader: (4)

It is all down to how the installer remove the suspension.
Some do mess around with the alignment bolt.
__________________
Email: sales@rgsport.com === IG: RGSport_USA
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 09:11 PM.




m5post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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