Quote:
Originally Posted by CJ421
The M3 suspension parts are excellent upgrades. They are aluminum and have harder bushings; no more deflection under load. That means more of your input is directly transmitted to the road.
I also highly recommend the front control arms/tension struts and rear subframe bushings (there are four of them). The front control arms/tension struts will make the steering heavier and give you a better feel for the road. The M3 subframe bushings are full bushings unlike the stock ones.
Adjustable rear toe arms are the last component after the subframe bushings to keeping your car's rear planted; the stock toe arms will not hold the toe in check under acceleration so the angle will fluctuate. Not good. Also a big problem if the car is lowered.
This hasn't been mentioned yet but what tires are you running? Those make a huge difference too ... more important than any suspension mod.
Last thing you're missing compared to your M cars is the limited-slip differential.
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Do you have part#s for all these components? Which ones are OE BMW and which ones are aftermarket parts? Any idea on whether PowerFlex offer any of the bushings mentioned?