This could be talked about already but I been going through forums just to see how consistent this issue is on mostly on all GTRs maybe not the 17 and newer ones I could be wrong but I am a new owner. I do have bell housing rattle for sure at Idle and I can hear it louder when I am reversing . I can hear the rattle coming from the rear when I am going really slow and over the speed bumps from what I have been reading online most people said the rattle can be the brake calipers having loose pins of some sort causing the rattle bad brake pads or heat shields in the back is loose also. I know I have new brakes they were changed when I bought the car 3 weeks ago. My car is a 2010 with 53k miles on I just want to know if its the bell housing that is what making all the rattles or I have a combination of something else in the rear that is causing rattles at low rpms maybe rear ball joints are loose hopefully someone has a fix or solution by now. I will try to post a video soon to give you guys an accurate sound to go off from.