Power Window problems of the 1999 BMW 323

All door windows make a rattleing sound since around 10,000 miles. They have changed the motors but those also work for 2-4 months and the same sound comes back . The motors are over pressurised and if I let it down very very slighyly, the sound cuts down to almost 75%. The lining is also defective as it needs constant special german lubrication,which works about 2 weeks and that makes the doors glass quite. It"s very annouying. BMW has still not come up with a permanant fix for this. Last week I test drove 4 of the x3 2. 5 as well as the 3. 0 and 3 of the 4 already are making this noise with the cars having from 80 to 200 miles on them. I had their mechanic and the sales people drive these car with me and they also aknowledge the noise along with the moon roof defective sound for which I was told they have an open campaine.

Consumer called complaining about rear passenger window problems . Manufacturer was contacted, and didn't want to do anything about it.