knock from the rear

[bazpro]

when driving my 325 normally over bumps ect there is no knocking or noise but sometimes when i get the wheels spinning theres a loud bangin noise coming from the back end.
thought it was the exhaust at first so go it looked at and my mate says its fine.
felt like it could be the probs hitting the floor but dont know if that would be possible,
got me stumped.

[snowman]

Take a look a the rear sub frame mounts there a common problem, i had the same problem on my old 1986 325i hope this helps. p.s its a pig of a job without the tool.

[daimlerman]

I would check the diff mounting bolts.

[lukescott]

Someone in the boot ?

[bazpro]

haha hope there aint no one in the boot.
i will try get it on ramps at the weekend and have a good look at it