Aftermarket Sway Bars

[M3mike]

Looking into getting aftermarket sway bars. What sway bar setup should I go for? I see a lot of people going for only a front bar and keeping the rear OE... is this the best option? Any reviews or first hand accounts?

[mrgizmo04]

Are you trying to correct a certain behavior or tune in a certain handling characteristic?

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[eacmen]

Front GC bar medium. Lots of adjustability.

Keep rear OE bar.


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[Obioban]

Nobody can helpfully answer this question because it depends on your spring rates, corner weights, and handling balance desires.

https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/9123-e46-m3-suspension-setup-or-how-to-not-downgrade-your-car-with-suspension-mods

[Tbonem3]

What are your current spring rates? If they're not too high up front and/or progressive, you'll enjoy a stiffer bar up front. I love my hollow hotchkis. My front springs are "only" 325lb.

[M3mike]

I currently have been running Eibach pro kit springs with Tein springs in the rear paired with my Koni yellows. Didn't want to mismatch but the rear height with the Eibachs was too high.

I forget the spring rates for each. Trying to search up now, I believe the eibach is a progressive but relatively low spring rate, and the Tein rear is 532lb?

So looks like a hotchkis front bar would be a good fit ?

[Tbonem3]

Eibachs are only 8% stiffer than stock up front. They also are meant to be paired with the Eibach pro-kit sways iirc. Increasing the stiffness (a medium setting for most bars with 3 holes. Eibach has 2 holes, so go with the inner) of your front ARB would have benefit.

[Obioban]

Eibachs are only 8% stiffer than stock up front. They also are meant to be paired with the Eibach pro-kit sways iirc. Increasing the stiffness (a medium setting for most bars with 3 holes. Eibach has 2 holes, so go with the inner) of your front ARB would have benefit.

Do you know the dimensions on eibach’s bars?

[Tbonem3]

Only that it's 29mm, not hollow, with 2 selections for adjustment. Front.

[Matty088]

I am using a hotchkis bar in the front on the tightest setting. It’s a no Brainer on the street. I am going to add a rear bar as soon as they come off back order.

my car is a vert which has a slight larger diameter stock over the Coupé.