i've got the same issue's w my 325 as well, worst off i'm on 19's and running coilovers.
sent it back to IA & e clear tape helped abit but still there's annoying sounds coming from everywhere.
e noises seems to be coming from the front passenger door, sometimes centre console where e ziggy lighter is but mainly the dashboard when going thru road humps.
i've been lazy to bring it back to IA and have been living with it since so i'll likely send it in wen i go on leave over the nxt couple of wks.
i'm hopeful that they will be able to resolve it for me.
oh yeah, my front passenger floor mat floods whenver i wash my car,
WTF... so now i try not to spray water directly when washing it, damn i've been patient.
dis CKD build quality from INOKOM suxz big time, anyone got a no. i can call to give them a shelling