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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > What are the cons of using these to lower the front?



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      09-02-2010, 05:30 PM   #23
reprod
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So if this makes the suspension sit deeper into the wheel well then wouldn't this also make the suspension travel higher into the wheel well. Is there a chance that you could hit your fender and crack it in an e92 or does the shock absorber position not change so it will still hit your bump stops at the same place...

Just asking...
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      09-02-2010, 06:32 PM   #24
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It will still hit the bump stop at the same place....so no issue with the tire hitting anything.
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      09-02-2010, 06:33 PM   #25
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Quote:
Originally Posted by The HACK View Post
Anyone who thinks lowering the front by 15mm and retaining the ride-height in the rear won't affect vehicle dynamics don't know what they're talking about.
+1

I would expect more oversteer. And less stability in bumpy turns. You've effectively removed factory weight distribution.
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      09-09-2010, 04:21 PM   #26
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Anyone installed these yet?
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      09-09-2010, 09:14 PM   #27
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Quote:
Originally Posted by pentaxis View Post
Anyone installed these yet?
There's a few including me, mine were done today and waiting to drive car for the springs to settle a bit and take pics
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      09-09-2010, 09:47 PM   #28
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See the other thread in this forum, just a few down from this for pics...
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      09-23-2010, 01:46 PM   #29
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Anyone have before and after pics? pref. on a e92? fyi, I spoke with supremepower and they assured me these would fit e92 xi as well.
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      09-23-2010, 02:42 PM   #30
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Quote:
Originally Posted by reprod View Post
So if this makes the suspension sit deeper into the wheel well then wouldn't this also make the suspension travel higher into the wheel well. Is there a chance that you could hit your fender and crack it in an e92 or does the shock absorber position not change so it will still hit your bump stops at the same place...

Just asking...
It won't travel higher into the wheel well because the bump stop is there by design not to allow that. It will however hit the bump stop more often. That's why I was interested in seeing if the M3 bump stops fit because they are shorter so it get's more travel before it touches them making up for the drop.
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      09-26-2010, 02:01 PM   #31
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I am going this route with stock sport suspesion on my e92....Spoke to a couple people that did perches and they did not even need an alignment either...They even said the car handled better so idk.....

I am solely doing these perches for esthetic reasons, I am not tracking my car, im sure the car handles differently after this mod....I am not too concerned with that however.
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      09-28-2010, 12:37 PM   #32
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any reason this might not be good for cars driven in winters with all the snow/salt etc...
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      09-30-2010, 10:08 AM   #33
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Are different bump stops a good idea with these then? Even if used with an H&R Cup kit?
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      09-30-2010, 11:34 PM   #34
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Just had these installed today at supremepower. Jeff did a great job on the install. The car feels virtually identical to stock. From behind the wheel, going over the same bumps and dips, etc., car feels exactly the same as before. If I didn't know they were installed, I wouldn't be able to tell the difference. I doubt if alignment would be needed as the drop is extremely mild. On my 2011 335is, it dropped 3/8" (about 1 cm drop overall). Visually, it is noticeable, but it's subtle. Front went from a 3 loose finger gap to about a 2 loose finger gap.

I do not think it is necessary to use different bumpstops at all. However, if you use lowering springs, then I would definitely get more progressive bump stops.

I see no cons at all to using this other than the fact that the install requires disassembly of the spring/strut which is always a PITA if you DIY. The steering wheel remained perfectly centered and there is no clunking, pulling, rubbing or any noticeable adverse effects with these lowering perches.

Last edited by AlterZgo; 09-30-2010 at 11:41 PM.
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      10-07-2010, 11:19 PM   #35
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post more pics
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      10-10-2010, 04:28 PM   #36
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Quote:
Originally Posted by AlterZgo View Post
Just had these installed today at supremepower. Jeff did a great job on the install. The car feels virtually identical to stock. From behind the wheel, going over the same bumps and dips, etc., car feels exactly the same as before. If I didn't know they were installed, I wouldn't be able to tell the difference. I doubt if alignment would be needed as the drop is extremely mild. On my 2011 335is, it dropped 3/8" (about 1 cm drop overall). Visually, it is noticeable, but it's subtle. Front went from a 3 loose finger gap to about a 2 loose finger gap.

I do not think it is necessary to use different bumpstops at all. However, if you use lowering springs, then I would definitely get more progressive bump stops.

I see no cons at all to using this other than the fact that the install requires disassembly of the spring/strut which is always a PITA if you DIY. The steering wheel remained perfectly centered and there is no clunking, pulling, rubbing or any noticeable adverse effects with these lowering perches.
pics?
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      10-10-2010, 04:37 PM   #37
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Ok. Now I am thinking about this.


Does this just raise the spring , or the spring and strut into the wheel arch?
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      10-16-2010, 07:39 AM   #38
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bump for an answer to my question above.
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      10-16-2010, 08:28 AM   #39
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Quote:
Originally Posted by bavarian19 View Post
bump for an answer to my question above.
Yes they push the spring up getting rid of some tension resulting in a mild drop on sports suspension, performance wise it feels like or better than oem since it reduces the uggly front gap and ass down look reducing drag due to the reduced gap in the wheel well, it is well worth money spend if you want to keep an oem feel with a mild drop. Here are a few pics of mine after a few weeks installed.
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      10-16-2010, 08:50 AM   #40
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Quote:
Originally Posted by francisomar View Post
Yes they push the spring up getting rid of some tension resulting in a mild drop on sports suspension, performance wise it feels like or better than oem since it reduces the uggly front gap and ass down look reducing drag due to the reduced gap in the wheel well, it is well worth money spend if you want to keep an oem feel with a mild drop. Here are a few pics of mine after a few weeks installed.
So it just pushes the spring up, and not the shock? I am looking to find out if the spring will now settle in a different range of the shock than before, or if it raises the whole spring and shock assembly.

Reason I ask is because I have heard a bunch of stories with new springs on old shocks and the shocks blowing way too early because the spring sat in a different range of the shock. I have 50k miles on my suspension, and would like to get this only if I don't have to replace my shocks soon.

So if this raises both the spring and shock together, I am all in.
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      10-18-2010, 01:29 PM   #41
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Can anyone compare the drop from the lowering perches to the drop you get with eibach pro spring?
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      10-18-2010, 03:59 PM   #42
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Quote:
Originally Posted by bavarian19 View Post
So it just pushes the spring up, and not the shock? I am looking to find out if the spring will now settle in a different range of the shock than before, or if it raises the whole spring and shock assembly.

Reason I ask is because I have heard a bunch of stories with new springs on old shocks and the shocks blowing way too early because the spring sat in a different range of the shock. I have 50k miles on my suspension, and would like to get this only if I don't have to replace my shocks soon.

So if this raises both the spring and shock together, I am all in.
Good question. I think it allows the spring to come up more but the shock still connects at the same level. That would mean your shocks would go out quickly. No different then getting shorter springs I suppose. Someone correct me if I'm wrong.
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      10-21-2010, 08:21 AM   #43
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some people think wayy to much about things. its a 0.5 inch drop people!!!!!!! your shocks are not going to fail due to being compressed that much. i mean, eibach pro kits are made to work in conjunction with stock shocks. your car is not going to explode if you buy these.
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      10-21-2010, 08:34 AM   #44
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The spring will be compressed the exact same amount (since it's the same mass, same spring). The bottom of the new upper spring perch will be 0.5" lower however. So you will have 0.5" less compression travel before bottoming out from a resting position. Everything else is exactly the same, no greater "stress" on the shocks (unless you bottom out a lot), no mismatch between spring stiffness and damping.
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