OK i know exactly what the issue is, and two out of the three 4th gens did this, how ever one of them didnt, neither did my parents 4th gen.
Heres the issue, my maxima clunks when going in reverse, and hitting the brakes. I know this issue has somthing to do with play in the brake pad..is there a way to get rid of this? i am assuming it is from the force moving forward sort-of jams the pads forward and then the reverse motion pops them loose a bit...

does anyone else have this issue..?

 

If iys a clunk and a 4th gen check your radiator support

 

lol it has nuthing to do with the radiator...i know exactly what it is..i wanna know why it does it...and if there is a way to get rid of it....

 

Do you know why i said that?

 

nope...but i know the sound is coming from there rear pads...mostly..

 

Your radiator support will rust out and cause you motor to fall a lil and cause noise. thats all.

 

well my car has been in the west all its life im pretty sure its not rust...plus all my mounts are in good shape...

 

Still check it out when you get a chance. better safe then sorry.