BMW M3 Forum (E90 E92)

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


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques
 
INDustry distribution
View Poll Results: Effect of lowering springs
Handles noticeably better than stock springs 5 50.00%
Handles about the same 3 30.00%
Handles noticeably worse than stock springs 2 20.00%
Voters: 10. You may not vote on this poll

Post Reply
 
Thread Tools Search this Thread
      04-08-2012, 06:18 PM   #1
Porschefile
Major
 
Porschefile's Avatar
 
Drives: E92 M3
Join Date: Jul 2008
Location: Tennessee

Posts: 1,232
iTrader: (6)

Consensus on Lowering Springs?

I have read many posts on here that say lowering springs actually hurt handling because they cause you to hit the bump stops even more easily etc. I have driven a E92 M3 with H&R sport plus springs and liked it a lot, but I have no base line to compare it to. The video/review of Eibachs on track was helpful, but I didn't see anything in the post that compared the performance before and after the install. The car obviously handled well, and the times were quick, but that doesn't prove that the car handles the same or better than stock.

Does anyone have personal experience with track handling before and after a spring install? I would put on coilovers but I like to have EDC comfort mode for the crappy roads here.

I'm going to Barber in 2 weeks and am debating whether or not to put some springs on before then.
Porschefile is offline  
0
Reply With Quote
      04-08-2012, 06:35 PM   #2
larryn
Major General
 
Drives: '97 332ti, '10 E92 M3
Join Date: May 2005
Location: Seattle

Posts: 8,439
iTrader: (2)

If I were you, if you are thinking about sleeve-over or coilovers, save your money on the springs. You'd be reducing the height of the car, adding some benefit, but at the cost of reduced travel on the damper.

Have a blast at Barber! Do you do any BMWCCA events? I cochair the Boston chapter's autocross program, and attend many of the HPDEs.
larryn is offline   United_States
0
Reply With Quote
      04-08-2012, 06:51 PM   #3
SROC5
Addicted to Track
 
SROC5's Avatar
 
Drives: E92 M3
Join Date: Apr 2009
Location: USCON

Posts: 1,587
iTrader: (3)

if you're really going to track the car a lot, invest in good coils. If tracking is a once in a while thing, then get the springs. You can save money by getting springs vs. sleeve overs.
__________________

| Akrapovic Evo | ESSi | Swift Spec-R | CF Spoiler | APEX ARC-8 | RS-3 | PFC-08 | DIF |
SROC5 is offline   United_States
0
Reply With Quote
      04-08-2012, 09:24 PM   #4
armyav8tor
n1smo
 
armyav8tor's Avatar
 
Drives: E92 M3
Join Date: Apr 2008
Location: North Carolina

Posts: 1,439
iTrader: (1)

Garage List
http://www.m3post.com/forums/showthread.php?t=656760

If you are going to stay with the stock struts then Eibach is the best option out there IMO. Sleeve overs are a waste of money, get real coilovers if you are going to go that route.
armyav8tor is offline   United_States
0
Reply With Quote
      04-08-2012, 09:28 PM   #5
Porschefile
Major
 
Porschefile's Avatar
 
Drives: E92 M3
Join Date: Jul 2008
Location: Tennessee

Posts: 1,232
iTrader: (6)

I've actually never ran with BMWCCA, but I'm not opposed to it. I used to run with NASA and usually do PCA or Rezoom now.

Thanks for the advice guys, I know coilovers are the best for track coming from a E36 racecar, but this car sees a lot of street use and I like EDC's flexibility. A really stiff CO setup is not comfy, I've done it before in other cars and there is always a compromise. I am leaning toward Eibach.

Oh and armyav8tor: did you run the car with stock and with Eibach or just after spring install? I really want somebody to throw some before and after opinions in here
Porschefile is offline  
0
Reply With Quote
      04-08-2012, 09:41 PM   #6
armyav8tor
n1smo
 
armyav8tor's Avatar
 
Drives: E92 M3
Join Date: Apr 2008
Location: North Carolina

Posts: 1,439
iTrader: (1)

Garage List
I ran the Ring when the car was stock and ran VIR with Eibach. Two different tracks I know, but I like the Eibachs. Less body roll, less understeer, easier to rotate. I really like them. I would like to ride in a car with coilovers just to compare.
armyav8tor is offline   United_States
0
Reply With Quote
      04-08-2012, 09:48 PM   #7
Porschefile
Major
 
Porschefile's Avatar
 
Drives: E92 M3
Join Date: Jul 2008
Location: Tennessee

Posts: 1,232
iTrader: (6)

Quote:
Originally Posted by armyav8tor View Post
I ran the Ring when the car was stock and ran VIR with Eibach. Two different tracks I know, but I like the Eibachs. Less body roll, less understeer, easier to rotate. I really like them. I would like to ride in a car with coilovers just to compare.
Thanks for the feedback. Very jealous you have ran the ring.
Porschefile is offline  
0
Reply With Quote
      04-08-2012, 09:54 PM   #8
CanAutM3
Brigadier General
 
CanAutM3's Avatar
 
Drives: 2015 M4 DCT
Join Date: Jan 2012
Location: Montreal

Posts: 3,725
iTrader: (0)

Garage List
2015 BMW M4  [4.50]
2006 Audi S4  [0.00]
I drove my buddy's E90 with lowering springs. Did not like how the car behaved when it hit the bump stops (which was quite frequently). Made the car feel squirely.

However Dinan offers re-calibrated bump stops with its lowering springs. They are supposed to keep the same travel despite the reduced ride height. It looks like an interesting option.

For reference (Under suspension travel): http://www.dinancars.com/university/

Last edited by CanAutM3; 04-09-2012 at 07:14 AM.
CanAutM3 is offline   Canada
0
Reply With Quote
      04-09-2012, 04:13 PM   #9
persian54
Lieutenant General
 
persian54's Avatar
 
Drives: SL550. Prev: E93 M3/335i/Z435i
Join Date: Jun 2009
Location: The Valley, SoCal

Posts: 15,775
iTrader: (291)

I noticed an improvement when I went from stock to Dinan

but then again, i did go from -1.1 camber to -2.5.... so that alone was worth it, and the main reason I did it.

Can't do anything with stock camber :/
persian54 is offline   United_States
0
Reply With Quote
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 -5. The time now is 12:57 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, 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