"Clunk" Noise at 5-10km/hr - Tranny?

[angusbn]

89 535i Auto Transmission

I hear a "clunk" noise when the tranny is shifting between lower gears at about 5-10km/hr.

No other noise at any other speed.

Any ideas?

[632 Regal]

slowing down? accelerating? Check mounts guibo driveshaft bushing and U-joints, rear half shafts etc...

[///Sniper535]

I always get a weird grinding noise when in Reverse going from 0 to maybe 5mph or until i accelerate.