To start off, i didnt know which category this post should go in, suspension, or wheels,tires & brakes. Heres my problem.

My car shakes when im coasting at just about any speed, whether it's in gear or not. My steering wheel is staying pretty still, its just my car is shaking slightly. It seems to be shaking more everyday?

I do have a lug stug broken on the front left wheel. My car also has eibach springs, with stock struts, and no camber kit. It has newer tires. But the back ones do seem to butterfly a bit.

Whats causing this wobble?

Jack the car up. Place one hand at 12 o'clock and one at 6 o'clock on the tire. Try to wiggle the tire. Try hard. Then do 3 and 9. Try grabbing the struts and shaking them too. Look for missing bolts and loose bolts. If the tires move, take them off and try again. This time grabbing the rotors in the same manner. if they don't move, it has something to do with the tire (tightness of lugs). If the rotors move too (depending on right and left or up and down) then it could be a bearing or something else.

Wow, thanks for the advice. Ill do this after work tomorrow!

That's just a start. Make sure you use jack stands. Don't want the car falling off the jack and smashing your rotors. Then you will have some major vibrations. (if you could even drive it)....