Lowering Springs on EDC

MrHarris · 03-12-2008, 07:37 AM

Do lowering springs like the H&R Sports that are supposed to work with EDC have a negative effect on the EDC shock life?

Do you guys think the performance could actually decrease, and only the "look" increase?

Would warrenty cover anything that went wrong with EDC if you have lowering springs?

M-bitious · 03-12-2008, 02:31 PM

I have driven/owned various M's (M3 E46, M6, M3 E92) and all lowered them with springs only from Hartge. Never had a single problem resulting from that, although quite a few people will make you believe otherwise. They were specifically developed to work with the oem shocks.

swamp2 · 03-12-2008, 02:54 PM

FYI this has been discussed ad nauseum here on the forum. Try a google search instead of the forums built in search. Try this link and look at the syntax of the search (you just add site:m3post.com to the end of your search).

The quick answer is that EDC does not care what springs you use. Although the damping rates are optimized for the existing springs as long as your springs are not unrealistically short or stiff all will be fine.

southlight · 03-12-2008, 03:20 PM

Sorry for OT:
Well, you told so many times how to use the google search and I never mentioned this was totally new to me. Thanks, Sw!

Best regards, south

swamp2 · 03-12-2008, 06:34 PM

Quote:

Originally Posted by southlight

Sorry for OT:
Well, you told so many times how to use the google search and I never mentioned this was totally new to me. Thanks, Sw!

Best regards, south

It is really powerful when you use the additional google capabilities that are not present in the M3post.com such as boolean logic. I almost never use the M3post.com search function.

///MML · 03-12-2008, 06:47 PM

Quote:

Originally Posted by M-bitious

I have driven/owned various M's (M3 E46, M6, M3 E92) and all lowered them with springs only from Hartge. Never had a single problem resulting from that, although quite a few people will make you believe otherwise. They were specifically developed to work with the oem shocks.

Not buying it. How many miles did you put on these cars 10k, 50k? I agree that some manufactures make better springs than others but it will not work over the long haul. The shock will degrade eventually (faster than normal). I emailed Hartge a question about the long term implications of their spings on the M5 with EDC, never heard back. I doubt these companies are doing 50k mile tests with these spring products on OEM shocks. This is a shortterm/poor man quick fix. Get some coilovers and do it right. Don't waste your time/money with this spring crap.

GregW / Oregon · 03-12-2008, 07:38 PM

Quote:

Originally Posted by ///MML

Not buying it. How many miles did you put on these cars 10k, 50k? I agree that some manufactures make better springs than others but it will not work over the long haul. The shock will degrade eventually (faster than normal). I emailed Hartge a question about the long term implications of their spings on the M5 with EDC, never heard back. I doubt these companies are doing 50k mile tests with these spring products on OEM shocks. This is a shortterm/poor man quick fix. Get some coilovers and do it right. Don't waste your time/money with this spring crap.

Well, the problem for those who have elected to go EDC is that you are throwing away the system you paid good money for to put in coilovers. Would've been nice if there had been base suspension test reports before many of us had to decide.

I just sent Ground Control and inquiry about this.

FifthStreetz · 03-12-2008, 11:46 PM

looks like i might have to put some sandbags or something in my trunk

OC ///M · 03-13-2008, 12:51 AM

The drop is minimal on the H&R's. The additional wear on the stock shocks will be negligible. Stock height is unacceptable.

MrHarris · 03-13-2008, 07:02 AM

If the life expectancy isn't shortened by a measurable amount then h&r sport springs it is. The m3 would be perfect with a drop of about like 1"-2".

GregW / Oregon · 03-13-2008, 12:34 PM

I inquired with Ground Control if they would offer lowering springs for the M3 EDC.

"Yes. definitely, it has been popular for the e60M5, and of course I expect moreso for the M3. The upper perch in front
is the same as e46 M3 and the rear requires a new upper mount and perch."

Jay Morris

!Xoible · 03-13-2008, 01:00 PM

Quote:

Originally Posted by OC kid

The drop is minimal on the H&R's. The additional wear on the stock shocks will be negligible. Stock height is unacceptable.

Quote:

Originally Posted by MrHarris

If the life expectancy isn't shortened by a measurable amount then h&r sport springs it is. The m3 would be perfect with a drop of about like 1"-2".

idk about that guys... i know you have been dropping your cars for 20 years OC but man H&R's make the car bouncy as heck

MrHarris · 03-13-2008, 06:11 PM

Quote:

Originally Posted by GregW / Oregon

I inquired with Ground Control if they would offer lowering springs for the M3 EDC.

"Yes. definitely, it has been popular for the e60M5, and of course I expect moreso for the M3. The upper perch in front
is the same as e46 M3 and the rear requires a new upper mount and perch."

Jay Morris

Any idea on how much the upper perch and springs might cost?

OC ///M · 04-10-2008, 03:09 AM

difference between stock...

Epacy · 04-10-2008, 07:56 AM

Interesting, OC! More info!

GregW / Oregon · 04-10-2008, 09:26 AM

Quote:

Originally Posted by MrHarris

Any idea on how much the upper perch and springs might cost?

No clue at this point. Springs are pretty inexpensive. Don't know if anything can be done with the perch; might just have to use stock. Here's pics of front and rear setup:

K3N R3D · 04-10-2008, 09:41 AM

If you read about some of the problems from m5board.com with springs and EDC you will notice that the problems were related to the H&R springs. I haven't seen anyone post about a problem with Dinan springs or Hartge springs.

That leads me to think that its ostensible that H&R may have a problem with the M3 EDC as well. JMHO

GregW / Oregon · 04-10-2008, 11:05 AM

Quote:

Originally Posted by K3N R3D

If you read about some of the problems from m5board.com with springs and EDC you will notice that the problems were related to the H&R springs. I haven't seen anyone post about a problem with Dinan springs or Hartge springs.

That leads me to think that its ostensible that H&R may have a problem with the M3 EDC as well. JMHO

Shorter springs need to be stiffer to limit deflection. I think any aftermarket spring is going to add some wear to the shocks, as they are resisting a similar load as stock in a shorter range of action. I doubt H&R springs are much different in specs than other choices. While I would like to lower the car, I'm not sure voiding the EDC warranty is worth it.

K3N R3D · 04-10-2008, 11:09 AM

Quote:

Originally Posted by GregW / Oregon

While I would like to lower the car, I'm not sure voiding the EDC warranty is worth it.

Agreed. However using Dinan springs will not void the EDC warranty.

GregW / Oregon · 04-10-2008, 11:27 AM

Quote:

Originally Posted by K3N R3D

Agreed. However using Dinan springs will not void the EDC warranty.

Well, technically, the factory warranty will be replaced by the Dinan warranty. That's one reason Dinan parts are so expensive. May be worth it in this case.

K3N R3D · 04-10-2008, 11:30 AM

Quote:

Originally Posted by GregW / Oregon

Well, technically, the factory warranty will be replaced by the Dinan warranty. That's one reason Dinan parts are so expensive. May be worth it in this case.

Yeh that's what I'm looking at. I really think the M3 should be lowered a bit but not too much. Will look much better.

I'll have to price the Dinan springs cause this is probably the only way I'd go just to get away from the hassle of the possibilities that can go wrong.

FifthStreetz · 04-10-2008, 12:02 PM

How much are Dinan springs for the E92 M3?

03-12-2008, 07:37 AM	#1
MrHarris yodog Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca Posts: 5,040 iTrader: (5) Garage List 2009 BMW [5.00]	Lowering Springs on EDC Do lowering springs like the H&R Sports that are supposed to work with EDC have a negative effect on the EDC shock life? Do you guys think the performance could actually decrease, and only the "look" increase? Would warrenty cover anything that went wrong with EDC if you have lowering springs?
	Tweet

03-12-2008, 03:20 PM	#4
southlight Moderator / European Editor Drives: BMW Join Date: Apr 2006 Location: Germany Posts: 6,332 iTrader: (0)	Sorry for OT: Well, you told so many times how to use the google search and I never mentioned this was totally new to me. Thanks, Sw! Best regards, south __________________ THE NEW BMW F30 3 SERIES ALL INFORMATION, PHOTOS, VIDEOS Join the 6MT Club group

03-12-2008, 11:46 PM	#8
FifthStreetz O! So Sour!! Drives: Fast e30 / Slow M3 Join Date: Apr 2007 Location: Fort Lee, NJ Posts: 15,221 iTrader: (20) Garage List 2008 M3 [4.50]	looks like i might have to put some sandbags or something in my trunk __________________

03-13-2008, 12:51 AM	#9
OC ///M Lieutenant Colonel Drives: SSII e92 M3 Join Date: Feb 2007 Location: So Cal Posts: 1,612 iTrader: (0)	The drop is minimal on the H&R's. The additional wear on the stock shocks will be negligible. Stock height is unacceptable. __________________ OC ///M 2011 ZCP \| ED + PCD \| Akra Evo \| Brembo 380mm \| ESS Tuning Software \| Evosport Pulley \| Molded OEM Spoiler & Splitters \|

03-13-2008, 12:34 PM	#11
GregW / Oregon Commander-In-Chief Drives: 2008 M3 Coupe, 2006 ML350 Join Date: Nov 2005 Location: Lake Oswego, OR Posts: 6,051 iTrader: (1) Garage List 2006 M-B ML350 [0.00] 2008 E92 M3 Coupe [4.75]	Ground Control lowering springs for EDC I inquired with Ground Control if they would offer lowering springs for the M3 EDC. "Yes. definitely, it has been popular for the e60M5, and of course I expect moreso for the M3. The upper perch in front is the same as e46 M3 and the rear requires a new upper mount and perch." Jay Morris __________________ Greg Lake Oswego, Oregon, USA 2008 M3 Coupe - Alpine/Fox Red/Carbon 2001 M3 Coupe - SOLD 3/08 2006 Mercedes-Benz ML350 (2012 ML350 BlueTEC on order) Last edited by GregW / Oregon; 03-13-2008 at 02:53 PM.

03-12-2008, 02:31 PM	#2
M-bitious Private Drives: BMW 135i coupe Join Date: Feb 2007 Location: Amsterdam Posts: 91 iTrader: (0)	I have driven/owned various M's (M3 E46, M6, M3 E92) and all lowered them with springs only from Hartge. Never had a single problem resulting from that, although quite a few people will make you believe otherwise. They were specifically developed to work with the oem shocks.

03-12-2008, 02:54 PM	#3
swamp2 Major General Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA Posts: 7,835 iTrader: (1)	FYI this has been discussed ad nauseum here on the forum. Try a google search instead of the forums built in search. Try this link and look at the syntax of the search (you just add site:m3post.com to the end of your search). The quick answer is that EDC does not care what springs you use. Although the damping rates are optimized for the existing springs as long as your springs are not unrealistically short or stiff all will be fine.

03-13-2008, 07:02 AM	#10
MrHarris yodog Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca Posts: 5,040 iTrader: (5) Garage List 2009 BMW [5.00]	If the life expectancy isn't shortened by a measurable amount then h&r sport springs it is. The m3 would be perfect with a drop of about like 1"-2".

04-10-2008, 03:09 AM	#14
OC ///M Lieutenant Colonel Drives: SSII e92 M3 Join Date: Feb 2007 Location: So Cal Posts: 1,612 iTrader: (0)	difference between stock... __________________ OC ///M 2011 ZCP \| ED + PCD \| Akra Evo \| Brembo 380mm \| ESS Tuning Software \| Evosport Pulley \| Molded OEM Spoiler & Splitters \|

04-10-2008, 07:56 AM	#15
Epacy Reincarnated Drives: 02 Maxima SE Join Date: Mar 2007 Location: IL Posts: 4,227 iTrader: (0) Garage List 2008 M3 [0.00]	Interesting, OC! More info! __________________ Pearl Bliss

04-10-2008, 09:41 AM	#17
K3N R3D Major Drives: z4 3.0si Coupe Join Date: Mar 2007 Location: West Palm Beach Posts: 1,284 iTrader: (0)	If you read about some of the problems from m5board.com with springs and EDC you will notice that the problems were related to the H&R springs. I haven't seen anyone post about a problem with Dinan springs or Hartge springs. That leads me to think that its ostensible that H&R may have a problem with the M3 EDC as well. JMHO __________________ ------------------------------------------------ When the voice and the vision on the inside, become more profound than the opinions and pictures on the outside...You've mastered your life!

04-10-2008, 12:02 PM	#22
FifthStreetz O! So Sour!! Drives: Fast e30 / Slow M3 Join Date: Apr 2007 Location: Fort Lee, NJ Posts: 15,221 iTrader: (20) Garage List 2008 M3 [4.50]	How much are Dinan springs for the E92 M3? __________________