every time i use my rear brakes now it makes a loud terrible noise... when i looked at it today it seems that the metal piece that the disk is connected to is pretty loose so i figured that i needed to tighten the axle nuts but i cant figure out how to do it.. they don't seem to tighten any advice would be great

 

are your pads wore out?

 

+1

your rotor is supposed to have a little slop because only one side of the caliper moves.

 

my rear brakes are shot to... pull off the caliper and see how much is left on the pads

 

you don't have to pull the caliper off to see if there is pad left or not