Recently we went to Turkey with our T3. It's a long trip from where we live and when we got back, we had driven for 13.500 km. When we entered Turkey, we heard a strange noise from the right rear wheel. I looked under the car and moved the right drive axle in and out. It produced the same noise. We still managed to drive for 10.000 km to get back home. Only once we heard the noise again. While still in Turkey we asked for information at the T3 forum. It was quite clear that a worn out CV-joint would be the problem. So I ordered two SKF CV-joints and we will see if these indeed prove to be the cause.