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Re: Who makes the biggest sway bars for E34s??? (archive)

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Posted by Rod... on April 07, 1999 at 23:54:53:

In Reply to: Re: Who makes the biggest sway bars for E34s??? posted by Rod... on April 07, 1999 at 10:06:38:

: : What does one have to do to get a 535i to have the same crisp, turn-in like my old 1986 Thunderbird Turbo Coupe? I have Racing Dynamics sway bars, new Bilstein struts, new thrust arms with BavAuto hard bushings, and 17" Michelin XGTZ Pilot tires on my 1991 535i. Even with all of these modifications, it is not even close to offering the same sharp, turn-in and buttoned down feel my old Turbo Coupe does. My Turbo Coupe has the factory springs (even though I transplanted a 5.0L Mustang V-8 into it), Koni adjustable shocks and struts, huge (1.31" diameter in front) factory sway bars and 15" Michelin XGTV Pilots. The turn-in on this car is IMMEDIATE and very stable.

: : Even with all of the modifications to my 535i, it still feels like the front end is dancing with a drunk partner (back end) that's always a half step behind. Since I believe sway bars play the primary role in the relationship between turn-in and body response, my first thought is to put larger sway bars on my car. However, I think that the largest bar (front) offered by Racing Dynamics, like all other aftermarket manufacturers, is 27mm in diameter. I'd appreciate any thoughts or suggestions here.

: : P.S. Other than the above complaint, I absolutely love this car!!!

: : Thanks!

: : Robert J. Kieffer
: : 1991 535i

: I have a 25mm Front and 19mm Rear swaybars on my E34, M5 and they are plenty big enough. The suspension components play together and if one component is not up to the job or if the balance front/rear is off then the suspensions ability to "take-a-set" will be reduced. The spring rate and shock play as much a role in the suspension feel as the swaybars. The balance of all three, including front to rear, is very important for cornering stability.
: There are few simple fixes.
: I suggest that you review the suspension upgrades you have installed so far to insure they are matched for your vehicle before you spend your upgrade dollars on a single "largest avaliable component".

Check and make sure your rear trailing arm and differential carrier bushings are in good condition.


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