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      04-17-2014, 06:20 PM   #3
Kgolf31
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Drives: 2007 Z4MC, 2012 128i
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^ Basically summed it up.

BMWs are very weird. Typically if someone says, swap the front bar for a thicker one....People freak out and say you're going to cause more understeer.

BMWs will not do this (well, they will a bit).

A front bar will transfer weight to the rear wheels for traction. This helps power down. With added camber, you will not notice and negative effects...however, you may/may not experience some extra understeer. It is the nature of the game.

If you swap a rear bar, you're not essentially transferring that weight from the rear tires to the front. Now you're compromising rear traction and you'll probably have a bit more trouble putting power down. In addition, get on the power too early and you may see the rear end wave at you when you start spinning. A rear sway bar will make the rear end more loose and it will tend to want to come around.
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