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Suspension & Braking Forum by BimmerWorld
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Old 03-20-2017, 11:57 AM   #1
otto99
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Coilover questions

If this has been discussed and I missed it in my search, I apologize. I recently bought a 325iT that has, or so I'm told, Street Edge coilovers. While it rides pretty much like I expected, it's not horrible, and the thing corners wonderfully. However, I would like to raise the rear a half inch or so for a bit of rake and because I will have to occasionally haul some weighty stuff. I'm am told the rears are set as high as they can go, and my only choice will be new springs. Is that advisable to just get slightly taller springs, or am I going to have to live with it until I can afford something new with more adjustability? I saw the post with Rob43's set up, and that I can do in a few months, so I am encouraged. Thanks.
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Old 03-20-2017, 12:43 PM   #2
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Quote:
Originally Posted by otto99 View Post
If this has been discussed and I missed it in my search, I apologize. I recently bought a 325iT that has, or so I'm told, Street Edge coilovers. While it rides pretty much like I expected, it's not horrible, and the thing corners wonderfully. However, I would like to raise the rear a half inch or so for a bit of rake and because I will have to occasionally haul some weighty stuff. I'm am told the rears are set as high as they can go, and my only choice will be new springs. Is that advisable to just get slightly taller springs, or am I going to have to live with it until I can afford something new with more adjustability? I saw the post with Rob43's set up, and that I can do in a few months, so I am encouraged. Thanks.
Yep. You want Rob's set-up for a nice improvement. Congrats on the touring. I love mine. Come on over the the Touring sub-forum (although this one is definitely right for this question).
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Old 03-20-2017, 12:47 PM   #3
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Actually, I went to the Touring forum when I first got the car, and since I can't buy Rob's set up until I hit 500 posts, I guess I'll have to visit a lot more of the forums!
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Old 03-23-2017, 03:07 PM   #4
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Quote:
Originally Posted by otto99 View Post
If this has been discussed and I missed it in my search, I apologize. I recently bought a 325iT that has, or so I'm told, Street Edge coilovers. While it rides pretty much like I expected, it's not horrible, and the thing corners wonderfully. However, I would like to raise the rear a half inch or so for a bit of rake and because I will have to occasionally haul some weighty stuff. I'm am told the rears are set as high as they can go, and my only choice will be new springs. Is that advisable to just get slightly taller springs, or am I going to have to live with it until I can afford something new with more adjustability? I saw the post with Rob43's set up, and that I can do in a few months, so I am encouraged. Thanks.
You certainly could install a taller spring.

I'm not familiar with those coilovers, but you'd want to get a spring rate that is similar to what you have now due to the valving of the damper.

There are a lot of companies that sell springs for coilovers. You just need to know if Street Edge uses a 60mm spring or a 2.5" spring.
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Old 03-23-2017, 03:52 PM   #5
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Originally Posted by I8UR911 View Post
You certainly could install a taller spring.

I'm not familiar with those coilovers, but you'd want to get a spring rate that is similar to what you have now due to the valving of the damper.

There are a lot of companies that sell springs for coilovers. You just need to know if Street Edge uses a 60mm spring or a 2.5" spring.
The rear springs on the E46 are not race springs (e.g. Eibach ERS) and are not coilovers. They are special springs that set on a adjustable perch. So, unlike a true coilover where you could use a variety of race springs, such is not the case on the rear of the E46.
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Old 03-23-2017, 06:33 PM   #6
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But these are coilovers, and they apparently have something of a stank about them. The company that sold them has stopped selling them for any BMW, and when called for information, like the documentation that would have come in the package, they were no help. Thanks to I8 for giving me a new avenue to explore, because I really want the car a bit higher in the back for normal use, and the ability to crank it back down for track days.
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Old 03-23-2017, 10:28 PM   #7
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But these are coilovers, and they apparently have something of a stank about them. The company that sold them has stopped selling them for any BMW, and when called for information, like the documentation that would have come in the package, they were no help. Thanks to I8 for giving me a new avenue to explore, because I really want the car a bit higher in the back for normal use, and the ability to crank it back down for track days.
I am 99.9% sure they are not coilovers in the rear. Are the springs wrapped around the dampers in the rear or in the stock location? If the stock location, regardless of whether they are height adjustable, they are not coilovers.

I've never seen rear springs on an E46 (even with adj height) that used regular race springs (again, e.g., Eibach ERS).
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Old 03-23-2017, 10:31 PM   #8
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Going back, I see you have Street Edge. The rears are not coilovers, although the full package are generally referred to as that. What's important is that you can't use std race springs used in coilovers in the rear to my knowledge.
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Old 03-24-2017, 07:23 AM   #9
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So then I'm just boned in the rear... wait, wait, without options on raising the back end without replacing it all?

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Old 03-24-2017, 12:10 PM   #10
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So then I'm just boned in the rear... wait, wait, without options on raising the back end without replacing it all?

Not sure. I think there are thicker spring pads you can buy. They may give you the additional height you need.

I think I remember someone else having an issue with their touring being too low with the Riceland coilovers. I seem to remember a rather prickly discussion over it between the user (bought them secondhand) and the distributor of Riceland.

Because the rear springs are not standard springs like the Eibach ERS, I suspect it will be harder to source just a new set of rear springs. You may be able to find a seller who sells different rear springs for their coilover set-ups, but I've not seen one yet. The thicker spring pads may be your only real hope.
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Old 03-24-2017, 12:24 PM   #11
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a few good thoughts; first if you really do plan on tracking your car, this would be a great time to sell off your se coilover kit. I'm sure once you polish them up you would get 250+ for them. A se coilover kit is not a track worthy setup, it's for looks not tracking, danger comes to mind as i think about it.

If you remove the tracking idea, then you could get away with a simple trick Rob43 told about, shim the rear springs with a xi 14.5mm spring pad. This is a good way to raise the rear up without spending big $ to do it.

The best way to do things imo would be to use the exact Rob43 built suspension that i use, it will cost you about 850 and the front and rear shocks are fully adjustable. Having the ability to adjust the shocks for street use or track use is a huge plus, it makes all the difference, plus i have a lifetime warranty on the shocks and springs.
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Old 03-24-2017, 01:50 PM   #12
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I think I remember someone else having an issue with their touring being too low with the Riceland coilovers. I seem to remember a rather prickly discussion over it between the user (bought them secondhand) and the distributor of Riceland
Yeah, I saw that, if you mean the large font rant about second hand purchase and they wouldn't refund him. Idiot. And that was what I was referring to earlier about them having a stank.
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Old 03-24-2017, 02:11 PM   #13
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Yeah, I saw that, if you mean the large font rant about second hand purchase and they wouldn't refund him. Idiot. And that was what I was referring to earlier about them having a stank.
Yep, that's the one. Totally agree he was an idiot.

Still, the situation is cause for concern about being able to adjust the springs high enough.
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Old 03-24-2017, 02:15 PM   #14
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a few good thoughts; first if you really do plan on tracking your car, this would be a great time to sell off your se coilover kit. I'm sure once you polish them up you would get 250+ for them. A se coilover kit is not a track worthy setup, it's for looks not tracking, danger comes to mind as i think about it.

If you remove the tracking idea, then you could get away with a simple trick Rob43 told about, shim the rear springs with a xi 14.5mm spring pad. This is a good way to raise the rear up without spending big $ to do it.

The best way to do things imo would be to use the exact Rob43 built suspension that i use, it will cost you about 850 and the front and rear shocks are fully adjustable. Having the ability to adjust the shocks for street use or track use is a huge plus, it makes all the difference, plus i have a lifetime warranty on the shocks and springs.
Thanks for the info! In paragraph order;

1. Well shoot. There goes my immediate plans to be the old dude in the wagon handing arses to 911's at the PCA autox! They were on the car when I bought it about a month ago, so I'm stuck for now.

2. Probably not worth it if I can't track it just to get the slight rake I want.

3. Not going to waste time on 500 posts, don't have sport package, have - horrors! - 18" wheels of which I'm not a fan, but again, they were on the car, and I want a square 8" wide set of Style 135's, as I thought they looked boss on my ZHP coupe. However in my favor, I do know exactly what to expect from an E46 chassis, as well as most everything back to E12's, having been around the old Blau und weiß for a good while now. But I guess I'm not a candidate for that package. I'll figure something out, but the car has more immediate concerns than whether or not the rear is a skosh higher. ;-)
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Old 03-24-2017, 03:16 PM   #15
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Hey Greg, you may be able to change to standard race springs in the rear after all. I was just looking at Status Gruppe and they use race springs in the rear. I though the changing angle of the spring seats would present a problem, and this was why other coilover kits didn't use these springs. I may be wrong. Here is an example:

https://statusgruppe.com/collections...s-coilover-kit

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Old 03-24-2017, 03:37 PM   #16
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Thanks, George! This forum has been a God send, as everything I've needed to fix on the car has been detailed in a DIY, and I've already saved a grand in labor costs. Although SK has made me leery now of tracking with this set-up, so I may have to wait until I can replace the whole shooting match.
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Old 03-25-2017, 07:44 AM   #17
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My pleasure Greg. I'd probably be leery of tracking the Ricelands. They are pretty trashy. Rob's rear dampers and a decent set of springs can make the set-up reasonable. I know he's taking a bit of a hiatus from E46F at the moment, but he does look at what's being posted.

I'm still a little leery of using standard race springs in the rear because of the variable angle of the seats as the suspension moves. Race springs don't really accommodate this well, at least I don't think so. I know the Status Gruppe folks have been monitoring another thread in this forum, so maybe if they see this, they can comment. I mean, if they help you out, they may get another customer or two.

BTW, I love your car. I think the 18s look wonderful.
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Old 03-25-2017, 08:23 AM   #18
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My issue with the wheels is first of all they desperately need refinishing, and they're 8.5" wide, which is almost too wide for the tires (225/40-18). The tires are Kumhos with the rubber lip that's supposed to keep you from rashing the wheels, but they're so wide the lip of the wheel and the rubber berm are parallel. Not quite stretched, but close to it. Otherwise I think they look OK.
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Old 03-25-2017, 11:54 AM   #19
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Old 03-26-2017, 12:45 PM   #20
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I LIKE! I need to keep this in mind. I really like two things about this.

1. You can use standard race springs

2. You can adjust it from below

Hard to beat Ground Control. We had them on our Sentra SE-R race car and I had them on my turbo G20 road car.
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