I too have a Quattro (2002 225HP) with the rear end movement. I notice it if roads are wet or otherwise slippery and I am off throttle or light throttle. It can be very unnerving. I changed from summer tires to winter tires and condition improved a lot, but not completely. I get the exact same jiggle if the snow tires are on ice (but don't get it on snow). I plan to upgrade summer tires to something with better wet traction and hope that will fix the problem.

Hope this helps.

 

My tt has almost none, when compared to other cars. I think it's a sign of worn shocks.

 

Thanks everyone for the suggestions.

Inibalir