So I recently installed some brand new bc racing br series extreme lows on my brz. I am not slammed, but rather am running the coilovers at the higher end of their adjustability. I have a clunking noise in all 4 corners of the car but predominantly the rear. A shop checked all 4 struts and confirmed that they arent blown. They checked all possible bolts, checked the endlinks and even removed the entire rear swaybar and endlinks to confirm they werent clunking. The springs are all seated firmly and a preload of 3-5mm is set so the springs arent loose either.

Since these coilovers are meant to go very low, is it possible that since im running them at a higher adjustment they aren’t under enough load/preload to prevent this clunking noise?

And yes i am aware bc racing make poor quality stuff, that isnt the point lol.