Originally Posted by mechanicalmoron
OP, the first thing you need to do is put the car at stock height, or as close as your coilovers go, (make sure to take care of breaking and re-torquing at the new height, all bolts on bushings) and see what it fixes. Then go from there.
I bet all your problems go away. Except hitting bumps hard... you have harder suspension than stock, you're going to feel bumps harder than stock.
I expect part of the problem is the rear sway bar making it too stiff compared to the front, combined with the LSD and height. And it may be overpowering your coils, and setting up nasty resonances or something. Got a stock one? And it sounds like the rear might not have been aligned properly after lowering, and may have a bad toe setting.
I had my car about the level you do, I used it as a starting point because tein reccomended it (for my shitty basics without independant anything adjustment - I don't know yours, or what they have), and it totally sucked - the damping was less effective at preventing bounce, but was more bone jarring on bumps. I raised it to one inch below stock, and it feels great. Unless you have a comfortable daily, and can have your 240 as a cool (and scary, and spine-shattering) weekend car, I don't think you should be that low. Besides, a daily has to navigate things like speedbumps, and unfamiliar parking lot entrances, and other crap - it's stressful to constantly be worrying what part of your car is going to be ripped off, and planning to prevent it, and having to do rediculous slow manuveres to prevent damage.
Also, drive it more. Find a parking lot if you feel so unsafe, if you don't know what it's limits are you can't even safely NOT push it's limits, right?
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