Wierd knocking from rear left

Hey not to sure what the issue is but when moving form a standstill i hear a knocking noise like its revolving with the wheel but it stops when i get up to higher speed.

I had an issue when changing the wheels about a month ago with the rear of the car not being able to move back or forwards so i gave it some gas and heard a massive bang not sure if its related or somethig else.

Any help appreciated

Sorry its so vague

This is probably more of a 'suspension and brakes' issue. Pull that wheel off and check the brakes - mainly the parking brake that is located *inside* the rear brake disk/drum combo. You probably have a broken part in there.

-Charlie

It gets worse also when i go into reverse. but i already changed my diff mount. still not sure