[tlrid3r]

Originally Posted by Mr_Reeves

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.