Originally Posted by C's Bimmer' post='736474' date='Dec 2 2008, 10:48 PM

Sway bars. And to reduce flex in the chassis, you can add front and rear strut tower braces. And of course, coilovers, like everyone else has mentioned above. Those 3 things will change the entire feel of the car.

Originally Posted by radz550i' post='736477' date='Dec 2 2008, 10:49 PM

+1 with Dinan!

Originally Posted by NeRwEEzy' post='736472' date='Dec 2 2008, 10:44 PM

+1 coilovers and sways to reduce much body roll

Originally Posted by cleung' post='737807' date='Dec 4 2008, 12:22 PM

I have bilstein shocks and H&R sport springs on not much roll anymore, and no these parts will not void warranty unless what goes wrong the dealer can prove that it was caused by the aftermarket parts. I had all sorts of stuff done to my e46 and the dealer had no problems warrantying things.

Originally Posted by BMW4Ever' post='737838' date='Dec 4 2008, 11:59 AM

How did you go about officially "warrantying things"? Was it just a verbal ok from the dealership or did you get something in writing?...or are they saying that it will not cause any harm therefore it will not void any warranties?

Originally Posted by BMW4Ever' post='735768' date='Dec 2 2008, 09:45 AM

I have a new 2008 535i but it does not have the sport package. No dynamic handling either. I find the body roll excessive and handling weak. How do I improve handling, elimiate body roll while still mainting a smooth comfortable ride and how do I do this without affecting my 4 year/ 80 K warranty? My SC told me that I cannot do certain modifications otherwise it will void warranty. He is still looking into it. I am in Canada.

He said that I could possibly go with Dinan springs. Basically I want to get the 550i kind of look and comparable handling. I want the M aerodynamic kit and 550i rims package (19"). I have Park Distance Control.

Please advise. Thanks!

Originally Posted by cleung' post='737909' date='Dec 4 2008, 02:24 PM

verbally they have said that if things aren't found to be directly a cause of the aftermarket parts then it has to be covered. For instance I have springs on my car but say my radiator goes they can't tell me that my radiator is not covered because of my springs being there. But if say if you have cold air intake and you get hydro lock and they find that the water came in from your intake then yes they will probably tell you thats not covered.

Originally Posted by mhs525' post='737920' date='Dec 4 2008, 02:50 PM

Dinan ... just go to the website, it tells what your options are.

I had Dinan stage 2 suspension in my E46 M3 because the factory ride was horrible. The Dinan suspension improved the ride AND improved the handling...

Originally Posted by BMW4Ever' post='737967' date='Dec 4 2008, 03:01 PM

Ok. I guess with some modifications we have to take a risk
Do you have a cold air intake? Have you noticed any difference?