just spotted this on ebay,different http://cgi.ebay.co.uk/vw-mk1-golf-rear-wheel-drive-bmw-powerd-track-drift-car_W0QQitemZ200227362381QQihZ010QQcategoryZ9873QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
That's one way of creating a heated discussion in BMW circles... "should I jack the car by the rear diff?"
Rear diff is FINE to jack with! If you can do it much heavier Mustangs, vcan definately do it on bimmers.
I jack my E30 under the diff, don't see a problem with it. Does seem a little odd after years of jacking fwd Golf's up though as a similar jack position on the centre of the rear beam on a Golf wouldn't do it much good!