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      11-13-2012, 10:53 PM   #18
Sleeper519's Avatar

Drives: 08 E92 M3 DCT
Join Date: Nov 2009
Location: Atlanta, GA

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Originally Posted by bigjae1976 View Post
I figured I would try here...

Someone was telling me that as the rear end squats, the rear tires actually toe in due to the multilink rear design. So dialing in a touch more rear toe is unncessary.


If it is that is brilliant if you ask me. That is also nice to know for the track.
So, your original premise is that we tend to dial a little rear toe in when we get (track) alignments, which is true for most folks' setups.

But the reason is NOT for the compression phase (squat) on corner exit under power, but for the droop phase (dive) to give more stability under heavy braking---that is where the rear tires tend to toe out from bushing flex, etc, and get a little squirrelly.

For a purely street setup it's probably unnecessary and zero toe would be just fine.

Just my take on it...

2008 M3 Coupe / DCT // StopTech BBK 380/355 / Pagid RS29 / Motul / Apex Arc-8 / BFG R1S / Ground Control / MS filter / Performance spoiler / BPM tune // Road Atlanta 1:39.70 / VIR Full 2:10.87 / Barber 1:42.20