I am getting this "thump" sound from all 4 wheels of my car when I go over bumpy road. it doesn't do it at the same time, and it doens't do it everytime I go over a bump or uneven road.
Sometimes one wheel will do it, and sometimes 3 wheels will do it.
It is not a metal to metal sound, it is more like something soft hitting something hard, but I can't figure out what it is.
I just installed Espelir GT Spring, the handling doesn't seem to be affected by this at all, it is just annoying, even more so when I dont know if it is bad or not.
Please help.
-Mark C.

 

usually, you will hear normal cluncking from installing aftermarket springs or struts. sometimes it is simple as a single loose nut or your sway bar hitting another part of your suspension. i know that tein springs come with a warning that there are normal noises like cluncking. if it really irritates you, maybe you could reinstall the springs.

 

also, check your swaybar endlinks and mounts, make sure they are not cracked or broken, or the sway bar hasn't flipped on you esp. if you have aftermarket sways.

-Ted

 

Yeah, I think it is something hitting my suspension, but I dont know what. it is definitely not a clunking sound though cuz it is not a metal hitting on metal sound.

About the sway, dont think it is that either, cuz I dont have any aftermarket sway. Do we have sway in the front in the wrx?? cuz if we dont, then it is definitely not the sway, since I am hearing the sound from all 4 wheels. Sometime at the sametime, sometimes, just from one wheel.
Do you guys think it could be my spring bottoming out? does that make a sound? or maybe hitting the bump stop?
or is it just loose and I gotta retightening everything?
-Mark C.

 

I think I found the problem...forgot to cut the bump stop... oops. =D
-Mark C.