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      10-29-2012, 06:36 PM   #22
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bigjae1976's Avatar

Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Wichita, KS

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Garage List
2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
Originally Posted by GTM_Challenge View Post
From a general suspension set up standpoint, no - not unless you're getting oversteer on track.

As mentioned before, a front sway will usually cause the car to understeer more - something you dont want if the car is set up to push from the factory anyways.

However, as seen in the thread, some people are reporting that a front sway can cure an understeer issue. I've not experience this myself. Your results my vary. My general suspension setup knowledge leads me to say that a front bar would cure an understeer issue, but i've never tried to fix one with a front bar - always a rear bar or alignment setting.
Typically in an E46 (suspension design is not that different, right?), most run the biggest front bar possible and a smallish rear bar. Some even skip using a rear bar..all in the name to banish understeer. Sheesh, Turner sells a 40mm front bar. If the normal thinking were to hold true, wouldn't a 40mm bar render your steering wheel useless?

I think the main difference with the E9X is that you don't have to do nearly as much to get the car close to neutral.
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red