MikeBuzzsaw

If you have sport suspension, you will not be able to install sway bars.

Leburpor

The car was a non-sport from the factory.

What about the M sport suspension that would prevent the installation of after market sway bars?

olli_535d

Eibach is a German family company with it's main manufacturing plant in Finnentrop, Germany. With their international expansion over the years they indeed have a second factory in California, but it's still a German brand and the factory in California will be manufacturing exactly to the German specifications.
Eibach is not only big on Japanese cars, it's big on all cars. They might not market the USA as clever as H&R, but they are huge on all cars in Europe and other parts of the world. H&R is hardly existent in the UK, as it's not been a targetted market so far. Eibach is huge for BMW's over here.

I prefer H&R myself, plainly due to the less conservative drop the Eibachs have, but the handling of the Eibachs I run at the moment is excellent.

olli_535d

Of course you can install H&R ARB's on sport suspension. The standard model has swaybars, the sport model has swaybars and the M5 has swaybars. The only difference being they get gradually thicker from standard to sport to M5. But even the M5 ones are still hollow, while the H&R ones are full material and even thicker. The original M-sport swaybars or M5 swaybars will also fit your standard car.

Harder and thicker will always have the advantage of reducing the roll while nailing the car around, but they will also reduce the margin where the car feeds back to you, that it might be on the way of loosing lateral grip.

Leburpor

Thanks for the great input!

Could you please elaborate on your post that i've quoted above? Are you stating that with thicker and solid sway bars the ability to 'feel' your tail end is coming loose will be diminished? i would have thought it'll be more pronounced as it won't be confused with body roll..

olli_535d

See it that way, less bodyroll through corners will increase your confidence in negotiating these faster and the stiffer/thicker ARB's will allow you to do so. Nevertheless there is a physical end of lateral grip and the stiffer bars allow you to get closer to that comfortably. So the zone between starting to feel "something" and getting the back out gets smaller. That's all I meant.

The H&R bars are also adjustable, twice for the front and 3 times for the rear, so you can also pretty much decide how tail happy you want your car to be.

They definitely make for much better handling without influencing the ride comfort negatively.
I am gonna have some, too, but need to refill the "mod kitty" first, as I also want an LSD and I have the M-sport suspension with the Eibach springs so can live with it very well for the time being.

Leburpor

What's LSD??

trboda6

Limited Slip Differential.

EuroCarFan

I think what MikeBuzzsaw meant was that you can't upgrade the sway bars on cars with Active Roll Stabilization. I have ARS on my 545 with Sports Package and there are no sway bars available.

JetBlack5OC

Agree with Olli. My buddy had CEC in Hollywood put sways bars on his M3 and they are adjustable. They recommended not putting them on the aggressive setting it could be too dangerous. While cornering on the aggressive setup, the rear end of the car will snap loose on you before you know it and it would be too late to save it. Combination struts and sway bars will tighten the supspension up real nice.