How is "The CLunk" caused?

[PHRiSCo]

I've done a search and can't find the cause.

I hear some sort of clunk from my mazdaspeed, I guess I haven't listened to it closely enough but it sounds like my tires are rubbing against something up front. I have 18" wheels on 40 series tires with a bodykit and coilovers, I thought perhaps my suspension has settled. Like I said I haven't listened to it closely enough it could be coming from the back, and my car is in the shop right now getting more "upgrades". so I can't just go confirm the sound right now. Anyway, does this sound like the infamous clunk to you guys? Or you think my suspension is the right answer? Because I can get my shop to raise the car anytime.

Thanks in advance! Please don't flame me if my search wasn't thorough enough. :'(

[t3ase]

Not related by any means but what kind of paint did you use for your valve cover cover? Is it a true spicy orange with the pearl or just a orange coat? If it's mica, how'd you get it in high temp?

[1sty]

The clunk is cuase by a bushing wearing out on the rear sway bar and eventualy allowing it to bounce around.
The "clunk" as has been infamous for 2 years is from the rear sway bar, not the front.