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      01-22-2021, 12:34 PM   #133
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Quote:
Originally Posted by LeveragedTiger View Post
Quote:
Originally Posted by tlrid3r View Post
I wondering where those bearing go. I believe on set on the rear camber arm and one set on the trailing arm.

But it seems schirmer has a whole set of suspension that they use for themselves and made lower grade or less racing compound for the public.
Those bearings cover 3/4 mounting points on the Trailing and Camber arms of the rear axle.

MK-Motorsport has a kit for all 4:
http://www.mk-motorsportteile.de/epa...oducts/corre9x

Then there's the monoball conversion for the Front Tension Arm/Upper Control Arm, but SPL and Turner have been doing that for years. And frankly, you might as well just buy a complete Upper Control Arm/Tension Strut from SPL anyways:
https://www.splparts.com/products/bm...sion-rods.html

If Schirmer wanted to do something really cool that isn't on the market, they'd reproduce that Camber Arm that is specific to a true rear coilover and moves the mounting point of the strut closer to the wheel.
Anyone have experience with the MK bumpsteer kit?
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      01-22-2021, 01:26 PM   #134
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^It's on my list of like to do one day. I'm actually curious why no US based companies seem to offer it and every very built car in Europe runs one. I don't even see many US based builds using those parts. Most of the guys here are low enough too I'd think fixing the roll center would be a good thing.

Does the E9x have bad bumpsteer issues in the rear?
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      01-22-2021, 02:46 PM   #135
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Does Schirmer run their cars anywhere other than the Nurburgring? When you've driven it 1000 laps, you are bound be quick. Cannot find info about them racing anywhere else.

Not discrediting them, they are nice builds but from what they sell, it seems to me that their experience on the ring is the biggest secret sauce. Prices really are overblown to the point of insult.
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      01-22-2021, 03:31 PM   #136
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Quote:
Originally Posted by //steve\\ View Post
^It's on my list of like to do one day. I'm actually curious why no US based companies seem to offer it and every very built car in Europe runs one. I don't even see many US based builds using those parts. Most of the guys here are low enough too I'd think fixing the roll center would be a good thing.

Does the E9x have bad bumpsteer issues in the rear?
I believe SPL has some stuff like this in the works
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      01-22-2021, 03:38 PM   #137
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Quote:
Originally Posted by berns View Post
Quote:
Originally Posted by //steve\\ View Post
^It's on my list of like to do one day. I'm actually curious why no US based companies seem to offer it and every very built car in Europe runs one. I don't even see many US based builds using those parts. Most of the guys here are low enough too I'd think fixing the roll center would be a good thing.

Does the E9x have bad bumpsteer issues in the rear?
I believe SPL has some stuff like this in the works
Hopefully for less than $1500... But I'm excited to hear that.
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      01-22-2021, 07:22 PM   #138
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Quote:
Originally Posted by //steve\\ View Post
^It's on my list of like to do one day. I'm actually curious why no US based companies seem to offer it and every very built car in Europe runs one. I don't even see many US based builds using those parts. Most of the guys here are low enough too I'd think fixing the roll center would be a good thing.

Does the E9x have bad bumpsteer issues in the rear?
Roll center correction is really only necessary on extremely lowered cars, correct?
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      01-27-2021, 03:36 PM   #139
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Fresh parts from Germany
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      01-27-2021, 04:53 PM   #140
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Okay I had to open it, install at a later date.
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      01-27-2021, 06:07 PM   #141
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Quote:
Originally Posted by ///Mobbin View Post
Okay I had to open it, install at a later date.
Looks like a really nice piece with sturdy strut mounts. See the "Show Me Your Wings" thread here:

https://www.m3post.com/forums/showthread.php?t=1794400
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      01-27-2021, 06:09 PM   #142
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Quote:
Originally Posted by DrFerry View Post
Looks like a really nice piece with sturdy strut mounts. See the "Show Me Your Wings" thread here:

https://www.m3post.com/forums/showthread.php?t=1794400
Thanks, will definitely throw a photo up there once installed.
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      02-17-2021, 10:05 PM   #143
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We still talking about these over hyped M3s?
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      02-17-2021, 11:21 PM   #144
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We still talking about these over hyped M3s?
It's winter. Any topic goes sitting at home and counting the days
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      02-22-2021, 06:51 AM   #145
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Just to let everyone know who may be wondering, Scott from AutoAttune, who is the official importer into the UK and Ireland for Team Schirmer has confirmed that Schirmer kinematics consists of this kit: https://www.teamschirmerparts.com/co...-kinematics-gt

So, here we have:

Front thrust arm or traction arm bushings,
Rear spring arm inner bushings,
Rear spring arm outer bushings with roll centre correction,
Rear adjustable toe arms.

So, no magic as others have stated. No custom knuckles/uprights and no custom spring arm. Mounting points on the subframe are not changed either.

The image supplied earlier from their Instagram is from one of their race GTRs and not one of the Schirmer GT track cars.

Obviously, you will have to add things like the custom Nitron R3s, solid subframe bushes and a couple of other things that are available to complete the job but there's no magic here. Where the magic probably lies is in the setup at Team Schirmer in Nurburg and the precise tuning of all these parts in conjunction with each other to yield results.

A few on this topic have already alluded to this but it's nice to have it confirmed.

Of course, any decent shop in the US can reproduce these results with these or similar parts.

I think where the expense lies in fairness to Schirmer is the fact that all of their parts are TUV approved. So you can fit these parts to your car in Germany and they will still pass the very stringent roadworthy test over there.

Last edited by Mr_Reeves; 02-22-2021 at 09:10 AM..
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      02-22-2021, 08:31 AM   #146
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There's an incoming GB on their small Kinematics kits.
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      02-23-2021, 11:44 AM   #147
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Quote:
Originally Posted by Mr_Reeves View Post
Just to let everyone know who may be wondering, Scott from AutoAttune, who is the official importer into the UK and Ireland for Team Schirmer has confirmed that Schirmer kinematics consists of this kit: https://www.teamschirmerparts.com/collections/m3-e90/products/small-axle-kinematics-gt

So, here we have:

Front thrust arm or traction arm bushings,
Rear spring arm inner bushings,
Rear spring arm outer bushings with roll centre correction,
Rear adjustable toe arms.

So, no magic as others have stated. No custom knuckles/uprights and no custom spring arm. Mounting points on the subframe are not changed either.

The image supplied earlier from their Instagram is from one of their race GTRs and not one of the Schirmer GT track cars.

Obviously, you will have to add things like the custom Nitron R3s, solid subframe bushes and a couple of other things that are available to complete the job but there's no magic here. Where the magic probably lies is in the setup at Team Schirmer in Nurburg and the precise tuning of all these parts in conjunction with each other to yield results.

A few on this topic have already alluded to this but it's nice to have it confirmed.

Of course, any decent shop in the US can reproduce these results with these or similar parts.

I think where the expense lies in fairness to Schirmer is the fact that all of their parts are TUV approved. So you can fit these parts to your car in Germany and they will still pass the very stringent roadworthy test over there.
Well there is one key point. Roll center correction for the rear is important and not many people offer this, if any other than them. There is very little detail available.
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      02-23-2021, 07:45 PM   #148
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Quote:
Originally Posted by tlrid3r View Post
Well there is one key point. Roll center correction for the rear is important and not many people offer this, if any other than them. There is very little detail available.
Why is this very important? I assume itís because Shirmer is running their cars pretty low and the ring has some rough sections hence the need for raising the diff and roll center correction. If others arenít running that low maybe itís a non issue

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      02-23-2021, 07:57 PM   #149
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I don't think they're running their cars that much lower than a lot of us. Looks like the same fender gap on similar spec wheels that I see a lot of track spec m3's have.

Question regarding the diff lift: Is there a performance benefit to this, or is it just to bring it back to factory ground clearance so they can launch the Quiddelbacher-Höhe and not wreck shit upon touch down?
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      02-23-2021, 08:11 PM   #150
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Recently went low on my car and the tech pointed out to me that my axles from the diff to the wheels now have a bit of an upward angle at static, aside from clearance I wonder if there is additional benefit to raising the diff and getting the axles flat again?
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      02-23-2021, 09:04 PM   #151
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I don't see the benefit of running the car that low but I am just a noob so who knows
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      02-23-2021, 11:04 PM   #152
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if they can make the suspension work without compromise, there is benefit to running as low as possible.
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      02-23-2021, 11:23 PM   #153
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if they can make the suspension work without compromise, there is benefit to running as low as possible.
Benefits* plural.
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      02-23-2021, 11:25 PM   #154
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Benefit of multiple benefits.
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