Lowering Springs on EDC

[MrHarris]

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]

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]

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 (http://www.google.com/search?hl=en&q=EDC+compatible+springs+site%3Am3post.com) 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]

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! :thumbsup:


Best regards, south

[swamp2]

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! :thumbsup:


Best regards, south

:thumbsup: 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]

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]

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]

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

[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.

[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".

[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

[///Mantis]

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

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]

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 kid]

difference between stock...

http://img522.imageshack.us/img522/4515/m3day3002va1.jpg

[Epacy]

Interesting, OC! More info!

[GregW / Oregon]

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]

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]

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]

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]

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]

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]

How much are Dinan springs for the E92 M3?

[GregW / Oregon]

How much are Dinan springs for the E92 M3?
Dinan has not released parts for the new M3 yet. I suspect, since they are US-based, and we're just getting the car, it will be some time yet (~1 year) for development and release of products. You can call them at 408-779-8584 (no email contact).